section 90 training examples by dulce rufino feldman doran glauz tom ruckman
TRANSCRIPT
Section 90 Training Section 90 Training ExamplesExamples
ByDulce Rufino Feldman
Doran GlauzTom Ruckman
Equation 1 (ASR)Equation 1 (ASR)
X
MC
SL6FB10FA12UF25
Where:UF = Silica fume, metakaolin, UFFA, or RHA, pounds per cy.FA = Fly ash or natural pozzolan conforming to the requirements in
AASHTO Designation: M 295, Class F or N with a CaO content up to 10 percent, pounds per cy.
FB = Fly ash or natural pozzolan conforming to the requirements in AASHTO Designation: M 295, Class F or N with a CaO content up to 15 percent, pounds per cy.
SL = GGBFS, pounds per cy.MC = Minimum amount of cementitious material specified, pounds per cy.X = 1.8 for innocuous aggregate, 3.0 for all other aggregate.
Note. For precast concrete, MC=TC and X = 0 for innocuous and 3.0 for all other aggregates.
Equation 2 (Cement Check)Equation 2 (Cement Check)
Where:MC = Minimum amount of cementitious material
specified, pounds per cy.MSCM = The minimum sum of SCMs that satisfies
Equation 1, pounds per cy.PC = The amount of portland cement in the mix, pounds
per cy.
0PCMSCMMC
Climate AreasClimate Areas
http://www.dot.ca.gov/hq/esc/techpubs/manual/bridgemanuals/bridge-memo-to-designer/page/Section%208/8-2.pdf
Additional Information SubmittedAdditional Information Submitted
Cement Source: CEMEX – Cupertino, Type II SCM Source: Headwater Resources, Inc. Type (a)
Centralia Fly Ash Aggregate Source: Teichert – Esparto (Innocuous) Fly Ash CaO content: 8% Shrinkage Test Results: Passed with similar mix
approved within 3 years Climate Area: I Concrete in Corrosive Environment: No Concrete to be used for: Bridge Deck Chemical Admixture: 5 oz/cwt Master Builders
Pozzolith 322 N (Water Reducing Admixture)
Materials VerificationMaterials Verification1. Cement
On Pre-Qualified Product’s List (PQPL)? Yes No (If No, reject mix)
http://www.dot.ca.gov/hq/esc/approved_products_list/pdf/Cementitious.xls2. Blended Cement
Blended Cement proposed? Yes No (If No, skip to #3) All Blending Materials on PQPL? Yes No (If No, reject
mix)3. Supplementary Cementitious Materials
All SCM’s on PQPL? Yes No (If No, reject mix) Fly Ash CaO content verified? Yes No (If No, reject mix)
4. Aggregate Proposed Gradation given? Yes No (If No, reject mix) Within Grading Limits? Yes No (If No, reject mix) On PQPL? Yes No (If Yes, reduced
“X” allowed in Section B)
http://www.dot.ca.gov/hq/esc/approved_products_list/pdf/aggregate_for_concrete.pdf
Materials Verification (Cont.)Materials Verification (Cont.)5. Chemical Admixtures
Chemical Admixtures proposed? Yes No (If No, skip to #6)
On PQPL? Yes No (If No, reject mix) Dosage Verified (per plans or manufacturer’s recommendations)
Yes No
http://www.dot.ca.gov/hq/esc/approved_products_list/pdf/Approved_Chem_Admix_List.doc
6. Air-entraining Admixtures Air-Entraining Admixture proposed? Yes No (If No, skip to #7) On PQPL? Yes No (If No, reject mix) Dosage Verified (per plans or manufacturer’s recommendations)
Yes No7. Lithium Nitrate Admixtures
Lithium Nitrate Admixture proposed? Yes No (If No, skip to #8) On PQPL? Yes No (If No, reject mix) Dosage Verified (per plans or manufacturer’s recommendations)
Yes No
Mix Design TestingMix Design Testing8. Shrinkage Test Compliance (for paving, bridge decks, and approach
slabs) Shrinkage Test Data Verified Yes N/A No (If No, reject mix) Verify “similar” mix design as needed per 90-1.01 Yes N/A
No (If No, reject mix)
Condition Maximum Shrinkage of Laboratory Cast Specimens at 28 days Drying (average of 3, %)
Paving and approach slab concrete
0.050
Bridge deck concrete 0.045
Note. Shrinkage requirement is waived for concrete that is used for precast elements.
Required shrinkage testing: AASHTO T 160
Mix Design CalculationsMix Design Calculations9. Check Minimum Specified Amount of Cementitious Material
Include amount of blended cement per 90-2.01Blended cement not used.
For bridge decks: MC=675 lbs/cy
Reduction of cementitious materials per 90-4.05: Water reducing admixture used: 5% reduction in MC
Calculate MC: Therefore, MC= 0.95x675 lbs/cy
Calculate TC:
OK Reject
lbs/cyMC =
≥
+ =TC =
641
MCTC
641160481 lbs/cy
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)10. Check Amount of Free Water (90-6.06)
20100
550MC310)cy/lbs(FW
2.32820100
550641310)cy/lbs(FW
328.2
2.328274)cy/lbs(FW 328.2274
OK N/A Reject
MC
641
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)11. Check Required Use of SCM Equations Equation 1:
UF=0 FA=160 lbs/cy FB=0 SL=0 MC=641 lbs/cy X=1.8 (innocuous aggregate)
X
MC
SL6FB10FA12UF25
X
MC
SL6FB10FA12UF25
8.10.3
641
16012
FA
MC
160
641
OK N/A Reject
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)11. Check Required Use of SCM Equations (Cont.) Determine MSCM:
MC=641 lbs/cy MSCM=is all fly ash
X
MC
SLFBFAUF
6101225
8.1
641
12
FA
FA
MC
FA
641
X
MC
SLFBFAUF
6101225
FA = 96.2 lbs/cy
lbs/cyMSCM = 96.2
FA
12
8.1641
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)11. Check Required Use of SCM Equations (Cont.) Equation 2:
MC=641 lbs/cy MSCM=96.2 lbs/cy PC=481 lbs/cy
OK N/A Reject
0PCMSCMMC
08.634812.96641 96.2641 481
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)12. Check Strength Development Time Equation
Per SSP S8-C02 instructions, only use “Strength Development Time” section for projects in Climate Areas I and II.
Strength development time equation:
UF=0 F=FA+FB=160 lbs/cy SL=0 TC=641 lbs/cy
7
TC
SL11F19UF41
OK N/A
77.4641
16019
160
641
7
TC
SL11F19UF41
F
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)13. Check Corrosion Control Specifications
Per SSP S8-C04 instructions, use for concrete in direct contact with a corrosive environment, including those located in Climate Area III as defined in the RTL Guide.
OK N/A Reject
14. Check Freezing Condition Equations Per SSP S8-C05 instructions, use when project falls within the post
mile limits shown for Climate Area III as defined in the RTL Guide.
OK N/A Reject
Freezing Equations w/ DeicingFreezing Equations w/ Deicing
[(25xUF) + (12xFA) + (10xFB) + (6xSL)] / TC ≥ X and;
Equation 2 does not apply.
plus the additional constraints: 4x(FA+FB) / TC ≤ 1 and; 10xUF / TC ≤ 1 and; 2x(UF+FA+FB+SL) / TC ≤ 1
And the allowance: 27x(TC-MC) / MC ≤ 5
Additional Information SubmittedAdditional Information Submitted
Aggregate Source: Non-Innocuous Fly Ash CaO content: 10% Climate Area: III Concrete in Corrosive Environment: No Concrete near Deicing Chemicals: Yes Concrete to be used for: Bridge Deck Chemical Admixture: No Water Reducing
Admixture
Mix Design CalculationsMix Design Calculations1. Check Amount of Cementitious Material (Checklist #9)
Include amount of blended cement per 90-2.01Blended cement not used.
For bridge decks: MC=675 lbs/cy
Reduction of cementitious materials per 90-4.05: Water reducing admixture not used: no reduction in MC
Calculate MC:
Calculate TC:
OK Reject
lbs/cyMC =
≥
+ =TC =
675
MCTC
675135337 + 203 lbs/cy
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)2. Check Required Use of SCM Equations (Checklist #11) “Concrete near deicing chemicals” in Section 8-2 Equation 1:
UF=0 FA=135 lbs/cy FB=0 SL=203 lbs/cy TC=675 lbs/cy X=3.0 (non-innocuous aggregate)
X
TC
SL6FB10FA12UF25
X
MC
SL6FB10FA12UF25
FA
TC
32.4
675
203613512
135
675
203
SL
OK N/A Reject
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)3. Check Freezing Condition Equations (Checklist #14)
Per SSP S8-C05 instructions, use when project falls within the post mile limits shown for Climate Area III as defined in the RTL Guide.
Equation 2:
FA=135 lbs/cy FB=0 TC=675 lbs/cy
1
TC
FBFA4
1TC
FBFA4
FA
TC
18.0
675
1354
135
675
OK N/A Reject
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)4. Check Freezing Condition Equations (Cont.) Equation 3:
UF=0 TC=675 lbs/cy
1TC
UF10
10
TC
UF10
TC
OK N/A Reject
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)5. Check Freezing Condition Equations (Cont.) Equation 4:
UF=0 FA=135 lbs/cy FB=0 SL=203 lbs/cy TC=675 lbs/cy
1
TC
SLFBFAUF2
1
TC
SLFBFAUF2
FA SL
TC
11
675
2031352
135 203
675
OK N/A Reject
Mix Design Calculations (Cont.)Mix Design Calculations (Cont.)6. Check Freezing Condition Equations (Cont.) Equation 5:
TC=675 lbs/cy MC=675 lbs/cy
5
MC
MCTC27
5
MC
MCTC27
TC
TC MC
50
675
67567527
675 675
675
OK N/A Reject