Evaluation of Compressive Strength
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Transcript of Evaluation of Compressive Strength
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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
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Construction Materials and Testing
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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Construction Materials and Testing
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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Construction Materials and Testing
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$5 an( /01-. Filler 3ase( on
4eight of 6ar(ener an( Resin*
msand 22.962275mresin
4 mresin x 7882 170/8.
Polmer Con!rete Composition of a sample "ith ,-. resin an( 90-. filler
Polmer Con!rete Mi$ Components Total *ass 6
)olyester 3esin "378-789# :;a
*1
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Construction Materials and Testing
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
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Construction Materials and Testing
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$5 an( /01-. Filler 3ase( on 4eight of
6ar(ener an( Resin*
msand 2
2.29561mresin
10mresin
3
x 7882 8;0;1.
Polmer Con!rete Composition of a sample "ith /. resin an( 90-. filler
Polmer Con!rete Mi$ Components Total *ass 6
)olyester 3esin "378-789# 98a
*1
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BasinsPolyester Resin (R10-103
Construction Materials and Testing
4hole Mi$5 an( 90-. Filler 3ase( on 4eight of
6ar(ener an( Resin*
msand 2
2.28788mresin
10mresin
3
x 7882 8;087.
Polmer Con!rete Composition of a sample "ith /. resin an( ,0,-. filler
Polmer Con!rete Mi$ Components Total *ass 6
)olyester 3esin "378-789# 98a
*1
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M!"P (Methyl !thyl "etone Pero#ide $ardeMicro-%i# &iller
Cylindrica Tro'
$igh Precision Bigital Ba
)*en-dried sand
+, y ., cylindrical %old
Construction Materials and Testing
• Polester resin )R9/#9/* A 378-789 is a resin manufactured and distributed by )olymer
)roducts Inc. It is a resin blend for producing polymer with high strength
• Mi!ro#mi$ 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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Construction Materials and Testing
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
)olymer !oncrete+ample with :;6 resin
and 7.;6 filler
)olymer !oncrete+ample with :;6 resin
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
Construction Materials and Testing
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
Construction Materials and Testing
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 "