IJSART - Volume 6 Issue 5 – MAY 2020 ISSN [ONLINE]: 2395-1052
Experimental Study to Find The Strength of Concrete
Block By Partial Replacement of Cement With Glass
Powder and Coconut Fibre
Tabassum Sayyad1, Mahesh Yelbhar2, Jayesh Pawar 3, Abhishek Daundkar4, Rohit Kale5,
Mahesh Limgude6, Suraj Kedari7
1
HOD, Dept of Civil
2
Lecturer, Dept of Civil
3, 4, 5, 6, 7
Dept of Civil
1, 2, 3, 4, 5, 6, 7
Bhivrabai Sawant Polytechnic, Wagholi, Pune, India.
Abstract- Glass is amorphous material with high silica Concrete is one of the most widely used construction material
content, thus making it potentially pozzolanic when particle in the world.Cement is costly & not environment friendly
size is less than 90μm. Studies have shown that finely ground which is used bulk in construction & non degradable glass
glass does not contribute to alkali – silica reaction. In the powder heavy wastage is hazardous to environment. Coconut
recent, various attempts and research have been made to use fibre waste having very high moisture content so storing in
ground glass as a replacement in conventional ingredients in rainy season and transportation is costly.
concrete production as a part of greenhouse management. A
major concern regarding the use of glass in concrete is the II. IDENTIFY, RESEARCH ANDCOLLECT IDEA
chemical reaction that takes place between the silica – rich
glass particle and the alkali in pore solution of concrete, i. Identify the physical properties of raw material used
which is called Alkali – Silicate reaction can be very to prepare Cement Concrete block by using glass
detrimental to the stability of concrete. Utilization of waste powder and coconut fibre as a partial replacement of
glass is very important for human development because huge cement.
amount of glass waste produce by human increases the need ii. Manually calculate the mix proportion of the mixes
of precious land for dumping waste glass, decreasing possible to prepare Concrete block by partial replacing cement
area that can be used for landfills of other waste increasing with glass powder and coconut fibre and compare the
the need to establish new expansive landfills, lactates and gas compressive strength of Concrete block with and
releases from the landfill site degrade communities living without glass powder and coconut fibre.
condition and harmful to human health, location of most iii. Compare the compressive strength of the Concrete
recycling plants are built within low income neighborhoods block containing glass powder and coconut fibre with
because of cheap labor and strict regulation may affect normal block.
respiratory system if breath in pollutants. iv. Cost comparison between the Concrete block
containing glass powder and coconut fibre with
Keywords- cement, fine aggregate, coarse aggregate, water, Normal Concrete block.
Pozzolans, Glass Powder.
III. WRITE DOWN YOUR STUDIESAND FINDINGS
I. INTRODUCTION
Durability of concrete with partial replacement of cement by
Concrete is comprised of cement, fine aggregate, coconut fibre and glass powder can be studied.
coarse aggregate, water, Pozzolans and air. Cement is made by
grinding a calcareous material such as limestone or shell with 1. Alkali aggregate reaction of concrete with partial
an argillaceous (clayish) material such as clay, shale. Light replacement of cement by coconut fibre and glass
weight concrete, high density concrete, coconut fibre powder can be studied.
reinforced concrete, self compacting concrete, high 2. Behaviour due to acid attack of concrete with partial
performance concrete, bacterial concrete, geo-polymer replacement of cement by coconut fibre and glass
concrete, vacuum concrete, aerated concrete are some of the powder can be studied.
main type of concretes used for construction activities.
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IJSART - Volume 3 Issue 4 –APRIL 2017 ISSN [ONLINE]: 2395-1052
IV. METHODOLOGY aggregate having maximum size of 20 mm was used in
the present work.
MATERIALS USED: Material = 20 mm
Weight = 1000 grams
1) Natural Aggregate: Gravels are obtained by crushing
natural basalt stone obtain from quarries. They are Table No 3- Sieve analysis of coarse aggregate (20mm)
hard, strong, tough, clear and free from veins, alkali,
vegetable matter and other deleterious substances.
Aggregates are free from such material, which will
reduce strength or durability of concrete.
2) Sand: Natural sand free from silt, veins, alkali,
vegetable matter and other deleterious substances,
obtained from Bhima, Ghod River.
3) Cement: Ultratech 53 GRADE ordinary Portland .
cement is used for all mixes. 4. Properties of Glass Powder:
4) Glass powder: Fine glass powder obtained from
grinding and cutting of glass. Waste glass when ground to a very fine powder
5) Coconut fibre: Obtained from coconut husk. shows pozzolanic properties. Therefore, glass powder can
partially replace cement and contribute to strength
1. Cement: The cement used in the tests was Ordinary development. Finely ground glass has the appropriate
Portland Cement (Grade 53) locally available. chemical composition including SiO2 to react with alkalis in
cement (Pozzolonic Reaction) and form cementitious products
Table 1 Properties of Cement that help contribute to the strength development. Chemical
composition of glass powder is given in the table below.
Sp gravity: 2.45
Unit Weight: 2579 kg/m3
Table 4:-Chemical composition of glass powder
2. Fine Aggregate (Sand): Locally available clean and
good graded fine aggregate was used after passing
through I.Ssieve2.36 mm.
Table 2 Properties of Fine Aggregate (Sand)
5. Properties of Coconut Fibre:
Coconut fibres are extracted from the outer shell of a
coco-nut. There are two types of coconut fibres, brown fibres
ex-tracted from matured coconuts and white fibres extracted
3. Coarse aggregate: The fractions from 80 mm to 4.75 mm ten-der coconuts. Brown fibres are thick, strong and have high
are termed as coarse aggregate. The material which is abrasion resistance, which is used commonly. There are many
retained on BIS test sieve no. 480 is termed as a coarse advantages of coconut fibreseg. they are moth-proof, fungi
aggregate. The broken stone is generally used as a coarse and rot resistant, provide excellent insulation against tempera-
aggregate. The nature of work decides the maximum size ture& sound, not easily combustible, unaffected by moisture
of the coarse aggregate. Locally available coarse and dampness, tough, durable, resilient, springs back to shape
even after constant use, totally static free and easy to clean.
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IJSART - Volume 3 Issue 4 –APRIL 2017 ISSN [ONLINE]: 2395-1052
Coir fibres were added 0.5% by the weight of cement and in 5 slump occurs due to self weight of concrete there is no
cm length. external energy supplied for the subsidence of concrete.
Table 5 Typical Properties of coir fibre Apparatus:
Slump cone (bottom diameter 200 mm, top diameter
100 mm and height 300 mm), standard tamping rod 16 mm in
diameter and 600 mm in length along with bullet end.
The slump shall be recorded in mm of subsidence of
the concrete during the test. Any slump in which one half of
the cone slides down in an inclined plane is called a shear
slump in such case the test shall be repeated if the shear slump
persists as may be in the case of harsh mixes this is an
indication of lack of cohesion of the mix. If the slump slides
evenly on all sides, it is called a true slump In case of concrete
mixes with high workability a collapse slump is possible. The
values of slump test obtained are interpreted as follows:
Table 7 Slump criteria and its value
Photo 1: Raw coconut fibres
6. Total quantity of materials required for M25 grade of
concrete:
Table 6 Quantity of materials
1) Water cement ratio = 0.43
2) Slump measured in mm = 48 mm
3) Degree of workability = Low
Result:
The slump measured for the given sample is 48 mm.
From the slump measured it can be concluded that the
concrete has low workability such concrete is suitable for
mass concrete foundations, lightly reinforced sections.
V. ANALYSIS
1. Slump cone test-
This test is extensively used on site. The test is very
useful in detecting variations in uniformity of a mix for a
given nominal proportion. This test shows behaviour of Photo 2.: Measurement of slump cone test
compacted concrete under the action of gravitational field
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IJSART - Volume 3 Issue 4 –APRIL 2017 ISSN [ONLINE]: 2395-1052
2. Casting of Concrete Cube (IS: 10086-1982) Table 4.2: Compressive strength of concrete cube specimen
tested after 28 days of curing.
1) The cube moulds are of 150mm size confirming to IS:
10086-1982.
2) In assembling the mould for use , the joints between the
section of mould shall be thinly coated with oil and
similar coating of mould oil shall be applied between the
contact surface of the bottom of the mould and the base
plate in order to ensure that no water escape during the
filling.
3) The interior surface of the assembled mould shall be
thinly coated with mould oil to prevent adhesion of the
Discussion:
concrete.
4) Compaction of test specimen shall be made as soon as
The maximum compressive strength is 32.75 N/mm2 at
practicable after mixing and in such way as to produce
20% replacement of glass powder and 0.50% replacement
full compaction of the concrete with neither segregation
of coconut fibre.
nor excessive laitance.
The maximum compressive strength at 20% replacement
5) The concrete filled into the mould in layers approximately
of glass powder and 0.50% replacement of coconut fibre
5 cm deep.
is 7.73% greater than the compressive strength of
6) In placing each scoopful of concrete, the scoop shall be
traditional concrete.
moved around the top edge of the mould as the concrete
slides from it, in order to ensure a symmetrical Compressive strength from 20% replacement of glass
distribution of concrete within the mould. powder and 0.50% replacement of coconut fibre is
7) Each layer shall be compacted is done by vibrator and by reduced as we increase percentage of glass powder and
hand, the standard tamping bar shall be used and the coconut fibre.
strokes of the bar shall be distributed in a uniform manner
over the cross section of the mould. VII. CONCLUSION
8) The 35 number of strokes are given per layer.
9) The strokes shall penetrate into the underlying layer and The test conducted on materials like Aggregate,
the bottom layer shall be ridded throughout its depth. Sand, Cement, Glass Powder, Coconut Fibre having all test
10) The voids left by the tamping bar, are close by tapping the result within permissible limit as per IS codes.
sides of the mould.
1. The modified concrete mix using Glass Powder and
Coconut Fibre performs satisfactorily on various
VI. ANALYSIS
tests, with acknowledgement to the proportional
Compressive Strength of Concrete cube: relationship between its rates of strength-loss and
contain in the mix. Mixing, casting and compacting
Table 4.1: Compressive strength of concrete cube specimen of concrete mix using Glass Powder, Coconut Fibre
tested after 14 days of curing. and coarse aggregates with local materials can be
carried out in a similar fashion to that of traditional
concrete mix.
2. The maximum compressive strength obtained is
32.75 N/mm2 at 20% replacement of glass powder
and 0.50% replacement of coconut fibre.
3. By reinforcing the concrete with coconut fibres
which are easily available, we can reduce the
environmental waste.
4. Modified concrete casted using Glass Powder and
Coconut Fibre helps in resisting cracks under the
action of compressive forces.
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IJSART - Volume 3 Issue 4 –APRIL 2017 ISSN [ONLINE]: 2395-1052
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