evaluation of compressive strength

8/19/2019 Evaluation of Compressive Strength

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Construction Materials and Testing

FINAL EXPERIMENT

TITLE: Evaluation of Compressive Strength of Polester Polmer Con!rete "ith Mi!ro#

Mi$ as Filler

%&'e!tive:

• To find best mix of polyester resin and micro-mix filler that will result to polymerconcrete with high strength

• To produce fire and water resistant concrete.

• To know the best percentage of filler that will improve compressive strength of the

polyester polymer concrete

Inten(e( Learning %ut!omes )IL%s*:

• To understand the advantages of using polymer resin in creating concrete.

• To know the qualities polymer concrete, have that is better than plain cement concrete

• To differentiate the advantages and disadvantages the polymer concrete have over

+is!ussion :

Intro(u!tion

The usage of concrete is very wide. It is one of the most important construction

materials. e cannot deny the fact that concrete has become part of our everyday life. It

is comparatively economical, easy to make, offers continuity and solidity and indeed, it

plays the role of developing and improving our modern society.

!oncrete is a composite material which is made of filler and a binder. Typical

concrete is a mixture of fine aggregates "sand#, coarse aggregates "rock#, cement, and

water. $ecause of its convenience, it is not only used in building construction but also in

other areas such as road construction, harbors, bridges and many more.

%ue to its wide range of application and effectiveness, new technology arises in

order to develop and enhance the quality and properties of the concrete. There are lots of

researches done in order to enhance the concrete&s workability. 'ne of the technological

advances done is by using polymer resin mixed with hardener as a binder for sand in

creating polymer concrete.

(ere in )hilippines, there are also lots of researchers who are continuously

studying and researching in order to develop the technology of concrete. There are many

Technological Institute of the Philippines1 | P a g e


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commercially available polymer products here in the )hilippines. *any types of polymer

resin blends are available for specific purposes whether for aesthetic, sculpture, or

figurine and other purposes. There are various types of polymer resin that are ideally good

as a replacement for cement and water in making a concrete with high compressive

strength.

+ince )hilippines are one of the countries who widely used concrete in construction,

some studies have been made ust to use these technological advancements in improving

overall strength and other properties relevant to concrete. !oncrete is somewhat permeable,

it is high in compression strength, poor against voids, and takes at least a month to attain full

strength. The use of polymer resin helps to strongly bind particles of sand together, make it

less of voids, impermeable against water penetration, and helps to attain maximum strength

of concrete at a much faster time of at least days of ust air drying.

+everal different types of polymer resin, fillers and hardeners have been

incorporated into the polymer concrete mixture. The choice of polymer resin varies from

epoxy, polyester, vinyl ester, and many other types. The choice fillers also affect the

properties of the polymer concrete. illers helps to attain improvement in compressive

strength of concrete, there also filler that helps make the polymer be fire resistant

therefore making the polymer concrete fire resistant in regards. The selection of the type

of resin and filler as a whole affect the workability of the concrete, the time of attaining

maximum strength, the permeability of concrete, corrosion resistance, fire resistance, and

abrasion resistance.

Preparation of Polmer Con!rete

)olymer concrete is similar to ordinary cement concrete because it contains fine

and coarse aggregates, but the hydraulic binder is totally substituted with a polymer

material. The aggregates are bounded together by the polymer matrix. )olymer concrete

contains no cement or water. The main technique in producing )! is to minimi/e the

volume of voids in aggregate so as to reduce the quantity of polymer required for binding

the aggregates. This is achieved by properly grading the aggregates so as to attain

maximum density and less voids. The aggregate must be of good quality, free of dust and

other debris, and dry. ailure to fulfill these criteria can reduce the bond strength between



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the polymer binder and the aggregate. 0 hardener is used to start the hardening process

of the polymer concrete mix. 1arly studies on polyester resin concrete while taking resin

content as a variable reported that compressive strength of polymer concrete is

dependent upon the resin content.

Properties of Polmer Con!rete

The properties of polymer concrete are largely dependent on the amount and

properties of polymer in the concrete. 1ach type of polymer can impart specific properties

to polymer concrete when incorporated with the aggregates. +o depending on the

properties of the )olymer !oncrete to be achieved, the nature and quantity of the polymer

composition should be chosen. The adhesive properties of polymer concrete allow

patching of both polymer and conventional cement based concretes. These composites

have some advantages compared to ordinary cement concrete such as2 rapid hardening,

high mechanical strengths, chemical resistance, etc.

A(vantages of Polmer Con!rete

• 3apid curing

• (igh tensile, flexural, and compressive strengths when fiber reinforcement is used

•

4ood adhesion to most surfaces• 5ow permeability to water and aggressive solutions

• 4ood resistance against corrosion

• *ay be vibrated to fill voids in forms

Polmer Con!rete Composition

Polmer Con!rete Composition of a sample "ith ,-. resin an( /01-. filler

Polmer Con!rete Mi$ Components Total *ass 6

)olyester 3esin "378-789# :;a

*1


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Computation of mass per!entage of oven#(rie( san(:

mwholemix @mresin ? mhardener ? msand ? mfiller

msand @mwhole A

mresin A mhardener A mfiller

msand @mresin

.25 - mresin - 0.03mresin A 8.88;"8.89 mresin+mresin #

msand @ 4 mresin - mresin - 0.03mresin A 8.88:; mresin

msand 2 2.962275mresin )Formula for Computing San( for a Polmer

Con!rete Sample Containing ,-. Resin 3ase( on

4eight of the 4hole Mi$5 an( /01-. Filler 3ase( on

4eight of 6ar(ener an( Resin*

msand 22.962275mresin

4 mresin x 7882 170/8.

Polmer Con!rete Composition of a sample "ith ,-. resin an( 90-. filler


)olyester 3esin "378-789# :;a

*1


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msand 22.95455mresin

4 mresin x 7882 10;8.

Polmer Con!rete Composition of a sample "ith ,-. resin an( ,0,-. filler

Polmer Con!rete Mi$ Components Total *ass 6)olyester 3esin "378-789# :;a

*1


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mwholemix @mresin ? mhardener ? msand ? mfiller

msand @mwhole A

mresin A mhardener A mfiller

msand @m

resin

.30 - mresin - 0.03mresin A 8.88;"8.89 mresin+mresin #

msand @10mresin

3 - mresin - 0.03mresin A 8.88:; mresin

msand 2 2.29561mresin )Formula for Computing San( for a Polmer Con!rete

Sample Containing /. Resin 3ase( on 4eight of the

4hole Mi$5 an( /01-. Filler 3ase( on 4eight of

6ar(ener an( Resin*

msand 2

2.29561mresin

10mresin

3

x 7882 8;0;1.

Polmer Con!rete Composition of a sample "ith /. resin an( 90-. filler


)olyester 3esin "378-789# 98a

*1


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BasinsPolyester Resin (R10-103


4hole Mi$5 an( 90-. Filler 3ase( on 4eight of

6ar(ener an( Resin*

msand 2

2.28788mresin

10mresin

3

x 7882 8;087.

Polmer Con!rete Composition of a sample "ith /. resin an( ,0,-. filler


)olyester 3esin "378-789# 98a

*1


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M!"P (Methyl !thyl "etone Pero#ide $ardeMicro-%i# &iller

Cylindrica Tro'

$igh Precision Bigital Ba

)*en-dried sand

+, y ., cylindrical %old


• Polester resin )R9/#9/* A 378-789 is a resin manufactured and distributed by )olymer

)roducts Inc. It is a resin blend for producing polymer with high strength

• Mi!ro#mi$ filler A a micro filler additive to

polymer to increase its fire resistance.

• ME=P )Methl Ethl =etone Pero$i(e*

6ar(ener A a liquid solution that must bemixed with the resin to start a chemicalreaction causing it to harden. eight of *1 (iameter $ ;> height !lin(ri!al mol( A molder for the desired polymer concrete

sample.

• Mi$ing ro(


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should be leak proof. The base should be smooth to be able to produced a concretesample with smooth surface.

;. *easure the mass of the =F x BF cylindrical mold using digital balance.

>. Dsing the three =F x BF cylindrical mold, fill it upto its height with the sieved oven-dried

sand.

. *easure the mass of the three =F x BF cylindrical mold filled with sieved oven-driedsand.

B. +ubtracting the mass of the cylindrical mold with the mass of the cylindrical mold filledwith sieved oven-dried sand, the mass of oven dried sand per concrete sample isobtained. Then use this mass of oven-dried sand to compute for the mass of resinneeded for polymer concrete sample.

G. Dse the formulas below to compute for the needed amount of resin, hardener, andfiller for polymer concrete sample containing :;6 resin and 8.;6

)olymer !oncrete+ample with :;6 resin

and 8.;6 filler


and 7.;6 filler


and :.:;6 filler

*ass of )olyester 3esin

mresin=

msand

2.962275mresin=

msand

2.95455mresin=

msand

2.946825

*ass of *1


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/eighing of the and /eighing of the resin

/eighing of the $ardener /eighing of the Micro %i# ller

Pouring o*en-dried sandMi#ing the Poly%er Concrete M

Pouring Poly%er Concrete Mi# to the Cylindrica


77. )ut the weighed resin first in the bigbasin, then add the weighed hardener.*ix it thoroughly until a change in color will be seen.

7:. 0dd the filler to the previous mix. *ix itthoroughly.

79. Then add the weighed oven dried sand.

*ix it thoroughly for about ; to 7;minutes.

7=. )our the mix to the three =Fx BFcylindrical mold. 0pply some force or vibration to the cylindrical mold filled withpolymer concrete mix. This helps toeliminate voids to each sample. lattenthe top part to ensure smooth topsurface.

7;. These three sample should be placed side-by-side for air drying. 0ir-drying should be

done for about days. Eocuring is reuired.

7>. )ut label on these threesamples. 1x. Trial 7:;6H8.;6, Trial ::;6H8.;6, and Trial 9:;6H8.;6



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Co%pressi*e trength Test


7. 3epeat above procedure for three polymer concrete sample "containing :;6 resin 7.;6 filler#.

7B. 3epeat above procedure for three polymer concrete sample "containing :;6 resin

:.:;6 filler#.

7G. 3epeat above procedure for three polymer concrete sample "containing 986 resin 8.;6 filler#.

:8. 3epeat above procedure for three polymer concrete sample "containing 986 resin 7.;6 filler#.

:7. 3epeat above procedure for three polymer concrete sample "containing :;6 resin :.:;6 filler#.

::. 0fter days of air-drying, go to the chosen testing center to test the maximum

compressive load that can be appled to each polymer concrete sample.

:9.!ompute for

the

compressive strength of each polymer concrete sample using the formula2

!ompressive +trength, f&c @ P

A ¿ P

πD2

4

here2) - ultimate compressive load of concrete "

evaluation of compressive strength

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