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ABSTRACT
Leaving the waste materials to the environment directly can cause environmental problem. Hence the reuse of waste material
has been emphasized. Waste can be used to produce new products or can be used as admixtures so that natural resources are
used more efficiently and the environment is protected from waste deposits. Marble stone industry generates both solid waste
and stone slurry. Whereas solid waste results from the rejects at the mine sites or at the processing units, stone slurry is a
semi liquid substance consisting of particles originating from the sawing and the polishing processes and water used to cool
and lubricate the sawing and polishing machines. Stone slurry generated during processing corresponds to around 40% of the
final product from stone industry. This is relevant because the stone industry presents an annual output of 68 million tonnes
of processed products. Therefore the scientific and industrial community must commit towards more sustainable practices.
There are several reuse and recycling solutions for this industrial by-product, both at an experimental phase and in practical
applications. These industrial wastes are dumped in the nearby land and the natural fertility of the soil is spoiled. The
physical, chemical and mechanical properties of the waste are analyzed.
INTRODUCTION:
The advancement of concrete technology can reduce
the consumption of natural resources and energy
sources and lessen the burden of pollutants on
environment. Presently large amounts of marble dust
are generated in natural stone processing plants with
an important impact on environment and humans.
This project describes the feasibility of using the
marble sludge dust in concrete production as partial
replacement of cement. In INDIA, the marble
processing is one of the most thriving industry the
effects if varying marble dust contents on the
physical and mechanical properties of fresh and
hardened concrete have been investigated. Test
results show that this industrial bi product is capable
of improving hardened concrete performance up to
10%, Enhancing fresh concrete behavior. 30 cubes
and 30 cylinders have been casted. The compressive
strength and split tensile strength of cubes and
cylinders was measured for 7 and 28 days.
CYLINDER:
Split Tensile strength of concrete is tested on
cylinders at different percentage of marble powder
content in concrete. The strength of concrete has been
tested on cylinder at 7 days curing and 28 days. 7
days test has been conducted to check the gain in
initial strength of concrete. 28 days test gives the data
of final strength of concrete at 28 days curing.
Compression testing machine is used for testing the
Split Tensile strength test on concrete along with two
wooden boards. At the time of testing the cylinder
taken out of water and dried and then tested.
DISCUSSION:
1. With the inclusion of Marble powder the
strength of concrete gradually increases up
to a certain limit but the gradually decreases.
2. With the inclusion of Marble powder upto
10% the initial strength gain in concrete is
high.
3. At 10% there is 27.4% increase in initial
Split Tensile strength for 7 days
4. At 10% there is 11.5% increase in initial
Split Tensile strength for 28 days.
5. The initial strength gradually decreases from
15%.
CONCLUSIONS:
• The Compressive strength of Cubes are
increased with addition of waste marble
powder up to 10% replace by weight of
cement and further any addition of waste
marble powder the compressive strength
decreases.
• The Split Tensile strength of Cylinders are
increased with addition of waste marble
powder up to 10% replace by weight of
cement and further any addition of waste
marble powder the Split Tensile strength
decreases.
• Thus we found out the optimum percentage
for replacement of marble powder with
cement and it is almost 10%
cement for both cubes and cylinders.
• We have put forth a simple step to minimize
the costs for construction with usage of
marble powder which is freely or cheaply
available; more importantly.
• We have also stepped into a realm of s
the environmental pollution by cement
production; being our main objective as
Civil Engineers.