SECTION 03100

CONCRETE FORMWORK

1 . GENERAL

1. 01 RELATED WORK

A. Section 03200 - Concrete Reinforcement.

B. Section 03250 - Concrete Accessories.

c. Section 03300 - Cast-In-Place Concrete.

1. 02 QUALITY ASSURANCE

A. Construct and erect concrete formwork in accordance with ACI 347.

1. 03

A.

B .

c.

1. 04

A.

B .

2.

2.01

A .

B.

REFERENCE STANDARDS

ACI 318 Concrete.

Building Code Requirements for Reinforced

ACI 347 - Recommended Practice for Concrete Formwork.

PS 1 - Construction and Industrial Plywood.

DELIVERY, STORAGE AND HANDLING

Deliver, handle and store formwork material to prevent warping or damage detrimental to strength of materials or to surfaces to be formed .

Ensure formwork surfaces in contact with concrete are not contaminated by foreign matter.

PRODUCTS

WOOD FORM MATERIALS

Exposed Concrete Surfaces: Plywood conforming to PI 1, minimum veneer Grade B-B, tight fitting, and adequately stiffened to support weight of concrete without deflection detrimental to structural tolerances and appearance of finished concrete surfaces.

Unexposed Concrete Surfaces: Plywood, lumber, tight fitting, adequately stiffened to support weight of concrete without deflection detrimental to structural tolerances.

03100-1

c .

2.02

A.

B .

2.03

A .

B .

c.

D.

E .

3 .

3.01

Nails, Spikes, Lag Bolts, through Bolts, Anchorages: Sized as required, of sufficient strength and character to maintain formwork in place while pouring concrete.

PREFABRICATED FORMS

Steel Type: Matched, tight fitting and adequately stiffened to support weight of concrete without deflection detrimental to structural tolerances and appearance of finished concrete surfaces.

Fiberglass Fabric Reinforced Plastic Forms: Matched, tight fitting and stiffened to support weight of concrete without deflection detrimental to structural tolerance and appearance of finished concrete surfaces.

ACCESSORIES

Form Ties: Water sealing snap-in removable type of fixed length, free of devices that will leave holes larger than 1-1/4-inch in concrete surface . Embedded portion of tie after removal of end shall terminate not less than l-inch from the formed face of the concrete.

Form Release Agent: not stain concrete characteristics or concrete.

Colorless mineral oil which will or impair bonding or color

coating intended for use on

Fillets for Chamfered Corners: Rigid foam plastic, wood, or metal of maximum possible lengths.

Flashing Reglets: 24 Gauge galvanized steel, release tape sealed reglet, bent tab anchors, securable to forms, profile to prevent water from entering behind reglet.

tongue dowels,

screened

Formed Construction Joints: Galvanized steel, and groove type knock-out holes to receive ribbed steel spikes with tongue to fit top edge.

EXECUTION

WORKMANSHIP

A . Verify lines, levels and compliance with Contract formwork.

Work Site dimensions for Drawings before erecting

B. Assemble formwork to permit easy dismantling and stripping, ensuring concrete is not damaged during form removal.

03100-2

C. Align joints, make watertight to prevent leakage of mortar.

D. Unless otherwise shown on Contract Drawings, provide 3 I 4- inch chamfer strips on external corners of beams, expansion joints, columns and walls. Provide 1-1/2-inch chamfer where detailed.

E . Form chases, slots, openings, drips and recesses as detailed, or required.

F. Obtain review of Engineer before framing opening in structural joints, beams, or columns which are not detailed on the Contract Drawings.

G. Provide bracing to ensure stability of formwork. Strengthen forms subject to construction loads.

H. Check and adjust formwork both horizontally and vertically, during placing of concrete.

I . Arrange forms to allow stripping without removal of prime shores where required to remain in place.

3 . 02

A.

INSERTS, EMBEDDED COMPONENTS AND OPENINGS .

Provide formed openings where required for pipe, conduit, sleeves and other Work embedded in or passing through concrete.

B. Accurately located and set i terns to be cast directly into concrete.

C. Provide temporary ports or openings to facilitate cleaning and inspection. Locate openings at bottom of forms so that flushing water will drain out.

D. Close temporary ports or openings with tight panels flush with the inside face of forms, fitted so that joints will not be apparent in concrete surfaces.

fitting neatly

exposed

3.03 TOLERANCES

A. Design, erect and secure forms to following tolerances:

1. Variation from Plumb:

a . In the lines and surfaces of columns, piers , walls, and in arises:

1. In any 10-ft of length: 1/4-inch

03100-3

2. Maximum for the entire length up to 100-ft: l-inch

b. For exposed corner columns, control-joint grooves, and other conspicuous lines:

1. In any 20-ft length: 1/4-inch

2. Maximum for the entire length up to 100-ft: 1/2-inch

2. Variation from the level or from the grades specified in the contract documents:

a. In slab arrises, shores:

soffits, measured

ceilings, beam soffits and in before removal of supporting

1. In any lO-ft of length: 1/4-inch

2. In any bay or in any 20-ft length: 3/8-inch

3. Maximum for the entire length: 3/4-inch

b. In exposed lintels, sills, parapets, horizontal grooves, and other conspicuous lines:

1. In any bay or in 20-ft length: 1/4-inch

2. Maximum for the entire length: 1/2-inch

3. Variation of the linear building lines from established position in plan and related position of columns, walls, and partitions:

1. In any bay: 1/2-inch

2. In 20-ft of length: 1/2-inch

3. Maximum for the entire length: l-inch

4. Variation in the sizes and location of sleeves, floor openings, and wall openings: ±1/4-inch

5. Variation in cross-sectional dimensions of columns and beams and in the thickness of slabs and walls:

1. Minus: 1/4-inch

2. Plus: 1/2-inch

6. Footings for Masonry:

1. Alignment in 10-ft: 1/4-inch

03100-4

3.04

2. Maximum for entire length: 1/2-inch

3. Level in 10-ft: 1/4-inch

4. Maximum for entire length: 1/2-inch

a. Other footings - variations in dimensions in plan:

1. Minus: 1/2-inch

2. Plus: 2-inch

b. Misplacement of eccentricity

1. Two percent of the footing width in the direction of misplacement but not more than 2-inches.

c. Thickness:

1. Decrease in specified thickness: 5 percent

2. Increase in specified thickness: No limit

7. Variation in Steps

a. In a flight of stairs:

1. Rise: ±1/8-inch

2. Tread: ±1/4-inch

b. In consecutive steps:

1. Rise: ±1/16-inch

2. Tread: ±1/8-inch

CLEANING

A. Clean forms as erection proceeds, to remove foreign matter.

B. Remove cuttings, shavings and debris from within forms.

C. Flush completed forms with water to remove remaining foreign matter.

D. Ensure that water and debris drain to exterior through cleanout ports.

03100-5

3.05

A.

B.

FORM REMOVAL

Do not remove forms, shores and bracing until concrete has gained sufficient strength to carry its own weight, construction loads and design loads.

Verify strength of results.

concrete by compressive test

C. Remove formwork progressively in accordance with code requirements.

D. Do not impose shock loads or imbalanced loads on structure.

E. Reshore structural members where required due to construction conditions.

END OF SECTION

03100-6

SECTION 03200

CONCRETE REINFORCEMENT

1. GENERAL

1. 01 RELATED WORK

A . Section 03300 - Cast-In Place Concrete.

1. 02 QUALITY ASSURANCE

1. 03

1. 04

A.

B .

A.

A.

Perform concrete reinforcing Work in accordance with CRSI 63 and 65 and ACI 315 unless specified otherwise in this Section.

All development and splices of reinforcing steel shall be in accordance with ACI 318. All splices shall be Class B unless otherwise noted.

SOURCE QUALITY CONTROL

Submit certified copies of mill test report of supplied concrete reinforcing, indicating physical and chemical analysis.

REFERENCE STANDARDS

ACI 318 Concrete.

Building Code Requirements for Reinforced

B. CRSI 63 - Recommended Practice for Placing Reinforcing Bars.

C. CRSI 65 Recommended Practice for Placing Bar Supports, Specifications and Nomenclature.

D. ASTM A185 Welded Steel Wire Fabric for Concrete Reinforcement.

E. ASTM A615 - Deformed and Plain Billet Steel Bars for Concrete Reinforcement.

F. AWS D12 . 1 - Welding Reinforcement Steel, Metal Inserts and Connections in Reinforced Concrete Construction.

G. ACI 315 - Manual of Standard Practice.

03200-1

1. 05 SHOP DRAWINGS

2.

2.02

2.03

A.

B.

Submit shop drawings in accordance with Section 01000.

Indicate bar sizes, length, spacings, locations, and quantities of reinforcing steel, and wire fabric, bending and cutting schedules, and supporting and spacing devices.

PRODUCTS

A. Reinforcing Steel: Grade 60 deformed billet steel bars, ASTM A615; epoxy coated.

B .

A.

B.

c .

Welded Steel Wire Fabric: finish.

ACCESSORY MATERIAL

Plain type, ASTM Al85; plain

Tie Wire: Minimum 15 gauge annealed type, or patented system accepted by Engineer .

Chairs, Bolsters, Bar Supports, and Spacers: Sized and shaped for strength and support of reinforcing during construction conditions.

Special Chairs, Bolsters, Bar Supports, Spacers (where adjacent to exposed concrete surfaces) Stainless steel type; sized and shaped as required.

FABRICATION

A. Fabricate concrete reinforcing in accordance with ACI 315.

B. Locate reinforcing splices, not at points of minimum stress. subject to review by Engineer.

indicated on Drawings, Location of splices

C. Where indicated, weld reinforcing bars in accordance with AWS Dl2.1.

D. Fabricate reinforcing tolerances:

steel

1. Sheared Length: ±l-inch.

to the following

2 . Depth of Truss Bar: Plus 0, minus 1/2-inch.

3 . Overall dimension of stirrup, ties and spirals: ±1/2-inch.

4. All Other Bends: ±l-inch.

03200-2

3.

A .

B.

c.

EXECUTION

Place reinforcing supported and secured against displacement. Do not deviate from true alignment.

Before placing concrete, ensure reinforcing is clean, free of loose scale, dirt, or other foreign coatings which would reduce bond to concrete.

Place reinforcing steel to the following tolerances:

1. Concrete cover to formed surfaces of slabs: ±1/8-inch.

2 . Concrete cover to formed surfaces of walls and beams: ±1/4-inch

3. Concrete cover to all other surfaces: ±1/4-inch.

END OF SECTION

03200-3

SECTION 03250

CONCRETE ACCESSORIES

1. GENERAL

1. 01 RELATED WORK

A. Section 03100 - Concrete Formwork.

B. Section 03300 - Cast-In-Place Concrete.

c . Section 03345 - Cast-In-Place Concrete Finishes.

D. Section 07900 - Sealants

1. 02 REFERENCES

1. 03

2 .

2 . 01

A. ASTM 175 Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction.

B. ASTM D1752 - Preformed Sponge Rubber and Cork Expansion Joint Fillers for Concrete Paving and Structural Construction.

A.

B.

A.

SUBMITTALS

Manufacturer's printed installation instructions.

Provide 6-inch long sample of expansion/construction joint.

PRODUCTS

MATERIALS

Formed Construction Joints : As specified in Section 03100.

1 . Joint Filler: Asphalt impregnated fiberboard; of size detailed; ASTM D175. To be used at all interior locations, exterior walkways and concrete drives.

2. Joint Filler: Regranulated cork particles impregnated and bound with asphalt res ins; ASTM D1 7 52 Type I I ; resiliency recovery of 95% if not compressed more than 50% of original thickness . To be used between adjacent substructures.

B. Sealant and Primer: As specified in Section 07900.

03250-1

3.

3.01

C. Waterstops: PVC, minimum 1,750 psi tensile strength, minus 50 degrees F to plus 175 degrees F working temperature range, flat profile, 6-inch dumbell without center bulb, unless otherwise indicated on Drawings.

D.

A .

B.

c.

Dovetail Anchor Slots: filled, release tape securable to forms.

24 gauge galvanized steel, foam sealed slot, bent tab anchors,

EXECUTION

INSTALLATION AND WORKMANSHIP

Locate and form expansion and contraction joints.

Install joint fillers and sealants in accordance with manufacturer's printed instructions. Use primers of type recommended by joint filler/sealant manufacturer.

Install waterstops continuous reinforcement. Heat seal joints. on all joints below grade.

END OF SECTION

03250-2

without displacing Install waterstops

SECTION 03300

CAST-IN-PLACE CONCRETE

1. GENERAL

1. 01 RELATED WORK

1. 02

A. Section 03100 - Concrete Formwork.

B . Section 03200 - Concrete Reinforcement.

c . Section 03250 - Concrete Accessories.

D. Section 03345 - Cast-In-Place Concrete Finishes.

QUALITY ASSURANCE

A. Cast-in place concrete work shall be performed in accordance with ACI 318, unless specified otherwise. Concrete materials and operations will be tested and inspected as the work progresses. Failure to detect any defective work or materials shall not in any way prevent later rejection when such defect is discovered nor shall it obligate the E/A for final acceptance.

B. Testing Agencies

1. The required testing services of Articles 1. 02C and 1. 02E of this section of the specifications shall be performed by the testing agency as designated in accordance with Section 01000 of these specifications. Initial tests detailed of Articles 1.02C and 1.02D will be provided by the Owner and those of Article 1 . 02E shall be paid for by the Contractor.

2. The necessary testing services of Article 1. 02G shall be performed by a testing agency acceptable to the E/A at the Contractor's expense.

3 . All testing agencies shall meet the requirements of ASTM E329.

C. Testing Services

1. The following testing services shall be performed by the designated Testing Agency:

a. Review and/or check-test the Contractor's proposed materials for compliance with the specifications.

03300-1

b. Review and check-test the Contractor 1 s proposed mixture design when required by the E/A.

c. Secure production samples of materials at plants or stockpiles during the course of the work and test for compliance with the specifications. Tests of cement and aggregates shall be performed to ensure conformance with Specification requirements . Manufacturer • s certification that cement materials meet Specification requirements and results of manufacturer's own material tests will be acceptable in lieu of tests by inspection and testing firm. Aggregates testing shall be performed by independent inspection and testing firm, for compliance with ASTM C33, including limits for deleterious substances, grading and physical property requirements.

d . Conduct strength construction in procedures:

tests of accordance

the concrete during with the following

1 . Secure composite samples in accordance with ASTM C172. Each sample shall be obtained on a random basis, avoiding any selection of the test batch other than by a number selected at random before commencement of concrete placement.

2. Mold and cure four specimens from each sample in accordance with ASTM C31. Any deviations from the requirements of this Standard shall be recorded in the test report.

3 . Test specimens in accordance with ASTM C39. Two specimens shall be tested at 28 days for acceptance and one shall be tested at 7 days for information. One specimen shall be held should additional testing be required and ordered . The acceptance test results shall be the average of the two specimens tested at 28 days . If one specimen in a test manifests evidence of improper sampling, molding or testing, it shall be discarded and the strength of the remaining cylinder shall be considered the test result. Should both specimens show any of the above defects, the entire test shall be discarded .

4 . Make at least one strength test for each 50 cubic yards or fraction thereof, of each

03300-2

mixture design of concrete placed in any one day.

5. When the total quantity of concrete with a given mixture design is less than 50 cubic yards, the strength tests may be waived by the E/A if, in his judgment, adequate evidence of satisfactory strength is provided, such as strength test results for the same kind of concrete supplied on the same day and under comparable conditions to other work or other projects.

e. Determine slump of the concrete sample for each strength test and whenever consistency of concrete appears to vary, using ASTM C143.

f. Determine air content of normal weight concrete sample for each strength test in accordance with either ASTM C231, ASTM C173 or ASTM C138.

g . Determine temperature of concrete sample for each strength test.

D. Additional Services When Required

1. The following services shall be performed by the designated agency when required by the E/A:

a. Inspect concrete batching, mixing and deli very operations to the extent deemed necessary by the E/A.

b. Sample concrete at point of placement and perform required tests.

c. Review the manufacturer's report for each shipment of cement and reinforcing steel and conduct laboratory tests or spot checks of the materials as received for compliance with the specifications.

d. Other testing or inspection services as required.

E. Other Services as Needed

1 . The following services shall be performed by the designated agency when necessary:

a. Additional testing and inspection required because of changes in materials or proportions requested by the Contractor.

03300-3

b. Additional testing of materials or concrete occasioned by their failure by test or inspection to meet specifications requirements.

F. Duties and Authorities of Designated Test Agency

1. Representatives of the agency shall inspect, sample and test the materials and the production of concrete as required by the E/A. When it appears that any material furnished or work performed by the Contractor fails to fulfill specification requirements, the testing agency shall report any such deficiency to the E/A and the Contractor.

2. The testing agency shall report all test and inspection results to the E/A and Contractor immediately after they are performed. All test reports shall include the exact location in the work at which the batch representing a test was deposited. Reports of strength test shall include detailed information on storage and curing of specimens prior to testing.

3. The testing agency and its representatives are not authorized to revoke, alter, relax, enlarge or release any requirements of the contract documents, nor to approve or accept any portion of the work.

G. Responsibilities and Duties of Contractor

1. The Contractor shall provide the necessary testing services for the following:

a. Qualification of proposed materials establishment of mixture designs.

and the

b. Other testing services needed or required by the Contractor.

c. The use of testing services shall in no way relieve the Contractor of the responsibility to furnish materials and construction in full compliance with the contract documents.

d. The Contractor shall submit to the E/A the concrete materials and the concrete mix designs from the redi-mix supplier proposed for use for each class of concrete with a written request for acceptance. This submittal shall include the results of all testing performed to qualify the materials and to establish the mix designs. No concrete shall be placed in the work until the Contractor has received such acceptance in writing.

03300-4

1. 04

e . To facilitate testing Contractor shall:

and inspection, the

1. Furnish any necessary labor to assist the designated testing agency in obtaining and handling samples at the project or other sources for materials.

2. Advise the E/A and the testing agency sufficiently in advance of operations to allow for completion of quality tests and for the assignment of personnel.

3. Provide and maintain for the sole use of the testing agency adequate facilities for safe storage and proper curing of concrete test specimens on the project site for the first 24 hours as required by ASTM C31.

4. Submit copies of mill test reports for shipments of cement and reinforcing steel to the E/A when required.

REFERENCE STANDARDS

A. ACI 3 01 Specifications for Structural Concrete for Buildings.

B. ACI 3 04 - Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

c.

D.

E.

ACI 305 Concreting.

ACI 306 Concreting.

ACI 318 Concrete.

Recommended Practice for Hot Weather

Recommended Practice for Cold Weather

Building Code Requirements for Reinforced

F. ASTM C33 - Concrete Aggregates.

G. ASTM C94 - Ready-Mixed Concrete.

H. ASTM C150 - Portland Cement.

I. ASTM C171 - Sheet Materials for Curing Concrete.

J. ASTM C260 - Air Entraining Admixtures for Concrete.

K. ASTM C309 Liquid Membrane-Forming Compounds for Curing Concrete.

L. ASTM C494 - Chemical Admixtures for Concrete.

03300-5

2 . PRODUCTS

2.01 CONCRETE MATERIALS

2.02

2.03

2.04

A.

B .

c .

A .

B .

A .

B .

A.

B.

Cement: Portland Cement, ASTM C150, Type I.

Fine and Coarse Aggregates: ASTM C33.

Water: Clean and free from injurious amounts of oil, alkali, organic matter, or other deleterious material.

ADMIXTURES

Air Entrainment: ASTM C260.

Chemical: ASTM C494, Type A - Water reducing. Type B - retarding. Type C - accelerating. Type D - water reducing and retarding. Type E - water reducing and accelerating.

CURING MATERIALS

Curing Compound: Resin based, type; ASTM C309, Type 2 - white pigmented, Class B.

Polyethylene Film: 4 mil. thick, white opaque color, ASTM C171.

ACCESSORIES

Bonding Agent: Two component modified epoxy resin.

Vapor Barrier: 4 mil. unless otherwise shown on the Drawings. Clear polyethelene film, type recommended for below grade application.

C. Non-Shrink Grout: Premixed compound consisting of non­metallic aggregate, cem~nt, water reducing and plasticizing agents; capable of developing minimum compressive strength of 2,400 psi in 2 days and 7,000 psi in 28 days.

2.05 CONCRETE MIXES

A. Mix concrete in accordance with ASTM C94.

B. Provide concrete of the following strength:

1. Compressive strength (28 day): 4,000 psi.

2 . Entrained Air Content : 3.4 .1.

As indicated in ACI 301, Table

03300-6

3.

3.01

3. Cement Content: Minimum 564 pounds per cubic yard.

4. Water Cement Ratio: Maximum 0.45.

5. Slump: l-inch minimum, 3-inch maximum for footings and substructure walls; 4-inch maximum for slabs, beams, reinforced walls and columns. Loss of slump in pumping shall not exceed 1-1/2-inch.

C. Select proportions for normal weight concrete in accordance with ACI 301, 3.8, Method 1.

D. Use water reducing admixtures only when accepted by Engineer.

E. Use accelerating admixtures only in cold weather and only when accepted by Engineer. If accepted, use of admixture will not relax cold weather placement requirements. Calcium chloride shall not be used.

F.

G.

A.

B.

Use retarding admixtures only in hot weather and only when accepted by Engineer.

Use air entrained concrete for all concrete exposed to the exterior.

EXECUTION

PLACING CONCRETE

Place concrete in accordance with ACI 304.

Notify Engineer minimum 24 hours prior to commencement of concreting operations.

C. Ensure anchors, seats, plates and other items to be cast into concrete are placed, held securely and will not cause hardship in placing concrete. Rectify same and proceed with Work.

D. Maintain records of poured concrete items. Record date, location for pour, quantity, air temperature, and test samples taken.

E. Ensure reinforcement, inserts, embedded parts, and formed expansion and contraction joints are not disturbed during concrete placement.

F. Prepare previously placed concrete by steel brush and applying bonding agent. agent in accordance with recommendations.

03300-7

cleaning with Apply bonding

manufacturer's

3.02

G. Pour concrete continuously between predetermined construction and control joints. Do not break or interrupt successive pours such that cold joints occur.

H. Pour floor slabs in checkerboard or saw cut pattern indicated on Contract Drawings. Saw cut control joints within 24 hours after finishing. Use 3/16- inch thick blade, cutting l/4-inch into depth of slab thickness.

I. In locations where new concrete is dowelled to existing Work, drill holes in existing concrete, insert steel dowels, and pack solidly with non-shrink grout.

J.

K.

L.

M.

N.

0.

A.

B.

c.

Honeycomb acceptable.

or embedded debris in concrete Notify Engineer upon discovery.

is not

Conform to ACI 305 when concreting during hot weather.

Conform to ACI 306 when concreting during cold weather.

Maintain concrete cover around reinforcing in accordance with ACI 3187 or as otherwise indicated on Contract Drawings.

Install vapor barrier under interior slabs on grade. Lap joints minimum 1 foot and seal. Do not disturb or damage vapor barrier while placing concrete reinforcing. If damage does occur, repair areas before placing concrete. Use vapor barrier materials, lapped over damaged areas minimum 6- inches in all directions and sealed.

Separate slabs-on-grade from vertical surfaces where shown with l/2-inch thick joint filler. Extend joint filler from bottom of slab to within l/2-inch of finished slab surface. Refer to Section 03250 for joint filler requirements.

CURING AND PROTECTION

Beginning immediately after placement, protect concrete from premature drying, excessive hot or cold temperatures, and mechanical injury. Maintain concrete with minimal water loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete.

One additional test cylinder shall be taken during cold weather concreting, and cured on the Work Site under same conditions as concrete it represents.

One slump test and one air test shall be taken for each set of test cylinders taken.

03300-8

D. Follow sampling and testing procedures referred in ASTM C94.

END OF SECTION

03300-9

1.

1. 01

A.

B.

1. 02

A.

SECTION 03345

CAST-IN-PLACE CONCRETE FINISHES

GENERAL

RELATED WORK

Section 03100 - Concrete Formwork.

Section 03300 - Cast-In Place Concrete.

REFERENCE STANDARDS

ACI 302 - Recommended Practice for Concrete Floor and Slab Construction.

B. ACI 3 04 - Recommended Practice for Measuring, Mixing, Transporting, and Placing Concrete.

1. 03

A.

2 .

2.01

A.

B.

2.02

A.

DELIVERY OF MATERIALS

Furnish concrete hardener, coating, in manufacturer's application instructions.

PRODUCTS

CEMENT GROUT

sealer and packaging

Cement: As specified in Section 03300 .

slip resistant complete with

Sand: As specified herein and in Section 03300.

COATING, HARDENERS AND SEALERS

Non-Metallic Hardener: in color selected by standard range.

Premixed emery type; dry shake Engineer from manufacturer's

B. Slip Resistant Coating: Graded Aluminum Oxide Shake.

3 .

3 . 01

A.

Color selected by Engineer from manufacturer's standard range.

EXECUTION

FINISHING HORIZONTAL SURFACES

Finish concrete surfaces in accordance with ACI 302 and ACI 304.

03345-1

3.02

B. Uniformly spread, screed and consolidate concrete. Do not use grate tampers or mesh rollers. Do not spread concrete by vibration.

c. In areas with floor drains, maintain walls and pitch surfaces uniformly indicated on Contract Drawings.

floor level to drains

at as

D. Scratch Finish: After the concrete has been placed and leveled to the specified tolerances, roughen surface with stiff brushes, brooms, or rakes before final set.

E.

F.

G.

H.

I.

A.

Float Finish: Do not work concrete until ready for floating. During or after the first floating, check surface against allowable tolerances. Cut down high spots and fill low spots to produce a surface within specified tolerances. Immediately after leveling, refloat to a uniform, sandy texture.

Trowel Finish: Float-finish concrete as specified above. Trowel to produce a smooth surface relatively free of defects; trowel marks, uniform in texture and appearance, and within the specified tolerances. Grind smooth surface defects which would show through applied floor covering system.

Nonslip Broom Finish: Immediately after the concrete has been float finished as specified above, slightly roughen the surface by drawing a broom transversely across the surface.

Nonslip Finish: Immediately after the concrete has been float finished as specified above, evenly apply the slip resistant coating material to the surface in accordance with the manufacturer's recommendations. The total application rate shall be 25 pounds per 100 square feet. The nonslip surface shall be completed with a trowel finish as specified above.

Hardened Finish: Immediately after the concrete has been float finished as specified above, evenly apply concrete hardener to surface in accordance with the manufacturer's recommendations. The total application rate shall be 25 pounds per 100 square feet. The hardener surface shall be completed with a trowel finish as specified above.

FINISHED HORIZONTAL SURFACE TOLERANCES

Scratch Finish: True planes within 1/4-inch in 5-ft as determined by a 5-ft straightedge placed anywhere on the slab in any direction.

03345-2

B. Float finish: True planes within 1/4-inch in 10-ft as determined by a 10-ft straightedge placed anywhere on the slab in any direction.

c. Trowel Finish: True planes within 1/8-inch in 10-ft as determined by a 10-ft straightedge placed anywhere on the slab in any direction.

3.03 SCHEDULE OF HORIZONTAL SURFACE FINISHES

3.04

A.

B.

c .

Scratch Finish: Apply to concrete surfaces that are to receive concrete floor topping.

Float Finish: Apply to concrete surfaces that are to receive membrane roofing or insulation.

Trowel Finish: Apply to concrete surfaces that are exposed to view at completion of project, covered with resilient flooring, painted, or to receive thin set ceramic tile.

D. Nonslip Broom Finish: Apply to exterior concrete platforms, steps and walks.

E. Nonslip Finish: Apply to interior concrete steps.

F.

A.

B

c.

Hardened Finish: Apply to all interior floor slabs not receiving other finish.

FINISHING FORMED SURFACES

Defective Concrete: Remove all honeycombed and other defective concrete down to sound concrete. If clipping is required, the edges shall be perpendicular to the formed surface. The defective areas shall be patched as specified below.

Patching Defective concrete: Prepare a bonding grout using a mix of one part cement to one part fine sand passing a No. 30 sieve. Prepare a one part cement to two part sand patching mixture. Substitute white Portland cement for a portion of the gray cement on exposed concrete surfaces to match color of adjacent concrete. Dampen area to be patched with water; brush bonding grout into the surface; apply patching mortar; strike off to a uniform plane; final finish; and cure.

Rough Form Finish: Patch tie hole and defects as specified above. Fins and projections exceeding 1/4-inch shall be rubbed down or shipped off.

D. Smooth Form Finish: Patch tie holes and defects as specified above. Remove all fins and projections.

03345-3

3.05

E. Smooth Rubbed finish: Apply to newly hardened concrete no later than the Day following form removal. Patch tie holes and defects as specified above. Remove all fins and projections. Wet concrete surface and rub with Carborundum brick or other abrasive until uniform color texture are produced. Cure finished surface. No cement grout shall be used.

SCHEDULE OF FORMED SURFACE FINISHES

A. Rough Form Finish: Apply to surfaces that are not exposed to view at completion of the Work.

B. Smooth Form Finish: Apply to surfaces that are not exposed to view at completion of the Work. Use only select form material as specified in Section 03100.

C. Smooth Rubbed Finish: Apply to interior a.nd exterior concrete surfaces that are exposed to view at completion of the Work.

END OF SECTION

03345-4

1.

1.01

A.

1. 02

A.

B.

c.

1. 03

A.

2.

2.01

A.

1.

SECTION 03600

GROUT

GENERAL

RELATED WORK

Section 03345 - Cast-In-Place Concrete Finishes

REFERENCE STANDARDS

ASTM C33 - Concrete Aggregates

ASTM C150 - Portland Cement

ASTM C827 Test for Early Volume Change of Cementitious Mixtures

SUBMITTALS

Submit Product Data as specified in Section 01000. Include Manufacturer's installation instructions.

PRODUCTS

MATERIALS

Grout Types

Type A: Non-shrink, noncatalyzed natural aggregate grout containing specially graded and processed natural fine aggregates, free of gas producing or releasing agents, and free of oxidizing catalysts and inorganic accelerators, including chlorides. Shall pass ASTM C827 and be capable of developing minimum compressive strength of 2,400 psi in 2 days and 7,000 psi in 28 days.

2. Type B: Non-shrink, noncatalyzed metallic grout, containing specially graded and processed natural and metallic fine aggregates, especially graded to minimize bleeding. Shall pass ASTM C827.

03600-1

2.03

3.

3.01

3. Type C: Not used.

4. Type D: Sand cement grout - mixed in the proportions of one part Portland cement to two and one-half parts of fine aggregate. For grouting areas having areas greater than 2-inches clearance, where coarse aggregate will not obstruct free passage of the grout, extend grout by adding 50 pounds of pea gravel per 100 pounds grout material.

B. Portland Cement: ASTM C150, Type 1

C. Sand: ASTM C33

D. Water: Potable

E. Pea Gravel: ASTM C33, coarse aggregate graded so that at least 90 percent passes 3/8-inch sieve and 90 percent is retained by a No. 4 sieve.

MIXING

A. Mix non-shrink grouting materials and water in a mechanical mixer for no less than 3 minutes.

B. Mix grout as close to the work area as possible and transport the mixture quickly and in a manner that does not permit segregation of materials.

c.

A.

B.

1.

After the grout has been mixed, do not add more water for any reason.

EXECUTION

INSTALLATION

Installation methods and procedures shall be approved by the Engineer before work is begun.

Schedule of Installation

Type A: All areas which require precision structural grouting which are exposed to the weather or in contact with water, or as indicated in equipment specifications.

2. Type B: All interior structural grouting, such as base plates, dry equipment, and structural bearings.

03600-2

3 . Type D: leveler.

All areas where grout is used as filler or

3.02 FORMWORK

3 . 03

A.

B.

A .

Build strong, tight forms braced so they will not leak or buckle under weight of fluid grout. On placing side, slate form at 45 degree angle and pour grout from 1/2-inch or more away from base of bedplate and l-inch or more higher than underside of the plate.

Caulk forms on inside or outside to prevent leakage and loss of head. If sand cement mortar is used for caulking, use only on the outside of forms. Use expanded polystyrene or other means to caulk between foundation or portions of the bedplate and equipment to seal off areas where grout is not desired.

SURFACE PREPARATION

Remove all defective concrete, laitance, dirt, oil, grease, and other foreign material from concrete surfaces by bushhammering, chipping, or other similar means until a sound clean concrete surface is achieved.

B. Lightly roughen the concrete, but not enough to interfere with the proper placement of grout.

C. Cover concrete area with water proof membrane until ready to grout.

D. Remove foreign materials from all steel surfaces in contact with grout .

E. Align, level, and maintain final positioning of all components to be grouted.

F .

G.

Take special precautions during conditions and apply according to written instructions.

extreme weather the manufacturer's

Immediately before grouting, remove water membranes and clean any contaminated surfaces.

proof

H. Saturate all concrete surfaces including bolt holes for 24 hours prior to grouting with clean water; remove excess water and leave none standing.

03600-3

3.04

3.06

A.

B.

c .

PLACING

Place non-shrink grouting material quickly and continuously by the most practical means permissible; pouring, pumping, or under gravity pressure.

Do not use either pneumatic pressure or dry packing methods without written permission of the Engineer.

Apply grout from one side only to avoid entrapping air.

D. Final installation shall be thoroughly compacted and free of air pockets.

E. Do not vibrate the placed grout mixture, or allow it to be placed if the area is being vibrated by nearby equipment.

F. Do not remove leveling shims for at least 48 hours after grout has been placed.

G. Do not use mixing water above 80°F. Placing of grout shall be at a temperature of 45°-75°F for foundation, bedplate, and grout material. Maintain a temperature of 45°-75°F for 24 hours following installation, thereafter above 40°F until strength exceeds 4,000 psi. Use cold or iced water to extend working time in hot weather or large placements.

CURING

A . Cure grout for three days after placing by keeping wet and covering with curing paper or by another approved method.

END OF SECTION

03600-4

SECTION 03603

EPOXY GROUT

1. GENERAL

1. 01 SUMMARY

A. Section Includes:

1 . Material for grouting reinforcing bars into existing concrete, and other uses where noted.

B. Alternatives:

1. CONTRACTOR may use premixed adhesive anchor material such as Sikadur Injection Gel by Sika Corporation or approved equal, rather than using field mixed grout as specified herein.

1.02 SUBMITTALS

A. Product Data:

1. Manufacturer's literature.

B. Submit in accordance with Section 01000.

2. PRODUCTS

2.01 MATERIALS

3.

3.01

A. Epoxy:

1. Manufacturers:

a . Sikadur Hi-Mod, by Sika Corporation. b . Five Star Epoxy Grout, by Five Star Products, Inc. c . Ceilcote 648, by Master Builders.

B . Sand: Hard, durable, oven dry.

EXECUTION

PREPARATION

A. Clean contact surfaces of oil, grease, and other foreign matter. Chip away unsound concrete.

03603-1

3.02

3.03

3.04

A.

MIXING

Mix components of epoxy compound as directed by manufacturer's instructions immediately before combining liquid with sand.

B. After binder thoroughly mixed, add sand as recommended by manufacturer.

PLACING

A. Place in accordance with instructions following temperature and pot life.

manufacturer's requirements

written regarding

B. Provide suitable materials where necessary to retain grout until hardened.

CURING

A . Cure as recommended by manufacturer.

END OF SECTION

03603-2

1.

1. 01

A.

1. 02

A .

B.

2.

2 . 02

A.

B.

SECTION 03605

PATCHING MORTAR

GENERAL

SUMMARY

Section Includes:

1 . Polymer modified, cementitious, fast setting, mortar for repair of concrete surfaces.

2 .

1.

2.

3.

4 .

Epoxy resin/portland cement steel corrosion protection concrete surfaces.

SUBMITTALS

Product data.

adhesive for and bonding

Submit in accordance with Section 01000.

PRODUCTS

MATERIALS

Manufacturers:

Sikatop 123 Plus, by Sika Corporation.

Duratop, by L&M Construction Chemicals.

Euco Poly Patch by Euclid Chemical Co.

Or approved equal.

reinforcing agent for

Polymer modified cementitious system consisting of two components.

1 . Component A: Liquid polymer emulsion of acrylic copolymer base and additives.

2 . Component B: Blend of selected Portland cements, specially graded aggregates, organic accelerator, and admixtures for controlling setting time, water reducers for workability, and corrosion inhibitor.

3 . System shall not contain chlorides, nitrates, added gypsum, added lime or high alumina cements. System shall be noncombustible, either before or after cure .

03605-1

4. Color shall be concrete gray.

5. Minimum Compressive Strength: 5,000 psi.

6. Bond Strength: 100% concrete substrate failure (pull off method), minimum 400 psi.

7. System shall not produce thermally compatible with resistant.

vapor barrier, shall be concrete and freeze-thaw

C. Bonding Agent/Reinforcing Steel Corrosion Protection:

1 . Sika Armatec 110, as manufactured by Sika Corporation, or approved equal.

2 . Component A shall be an epoxy resin/water containing suitable viscosity control agents. not contain butyl glycidyl ether.

emulsion It shall

3. Component B shall be primarily a water solution of a polyamine.

4. Component C shall be a blend of selected portland cements and sands.

5 . The system shall not contain asbestos.

6. The color shall be dark gray.

7 . Minimum Compressive Strength: 8,700 psi.

8. Minimum Flexural Strength: 1,100 psi.

9 . Minimum Bond Strength at 14 days, 24 hrs. open time: 1,700 psi.

10 . System shall not produce vapor barrier.

3 . EXECUTION

3.01 PREPARATION

A. Prepare surface in accordance with manufacturer•s written recommendations.

B. The surface must be mechanically prepared. Areas to be repaired must be clean, sound and free of contaminants. All loose and deteriorated concrete shall be removed by mechanical means approved by the ENGINEER.

C. Saw cut the repair perimeter 1/2 inch maximum, do not cut reinforcing steel. Cut perimeters around repair

03605-2

3 . 02

areas to provide for a simple layout. The layout should be designed to reduce boundary edge lengths.

D. Chip concrete substrate to obtain a roughened surface profile to ensure mechanical interlock of repair patch.

E . When the repair area has reinforcing steel with active corrosion, concrete shall be removed a minimum of 3/4" behind reinforcing steel. Reinforcing steel shall be cleaned by mechanical means to remove all contaminants and rust. If reinforcing steel has more than a 25% section loss of its original diameter, new reinforcing bars shall be spliced in place. Lap splice lengths shall conform to ACI 318.

F . All exposed reinforcing steel shall be coated with an epoxy resin/portland cement adhesive, Sika Armatec 110, as manufactured by Sika Corporation, or an approved equal. CONTRACTOR shall apply in accordance with manufacturer's written recommendations.

G. CONTRACTOR to utilize a bonding agent after surface preparation, Sika Armatec 110, or an approved equal, prior to placing patching mortar as recommended by patching mortar manufacturer.

APPLICATION

A. Apply and cure patching mortar in accordance with manufacturer's written recommendations .

B. Mix the polymer-modified portland cement mortar as directed by the manufacturer.

C. At time of application, the substrate should be saturated surface dry with no standing water. Mortar must be scrubbed into the substrate filling all pores and voids .

D. While the scrub coat is still plastic, force material against edge of repair, working toward center. After filling, consolidate, then screed. Allow mortar to set to desired stiffness, then finish to match the surrounding area of the repair patch.

E. Areas where the depth of the repair to sound concrete, is greater than 1-1/2 inches, repair will be made in lifts of 1-1/2 inches maximum thickness. The top surface of each lift shall be scored so as to produce a roughened surface for the next lift. The preceding lift should be allowed to reach final set before applying fresh material. The fresh mortar must be scrubbed into the preceding lift.

END OF SECTION

03605-3