Experimental Investigation of partial Replacement of cement by using Marble Dust Powder

Author: Ms. Naveena R, Email: naveenarajasekar33.nr@gmail.com

Introduction:-

Marble stone is extensively used for construction purposes to provide a pleasing aesthetic look, but with the production of marble stones, huge amounts of waste which is usually referred to as waste marble dust (WMD) is produced. Marble dust is a product of the marble processing and is produced as a result of marble sawing and shaping. It has been estimated that from the mining process of marble to the finished product, about 50% of the mineral is turned to waste; 90% of whose particles are below 200μm. The proper management and disposal of this waste is a worldwide concern to environmental safety.
Marble is a metamorphic rock resulting from the transformation of a pure limestone. The purity of the marble is responsible for its colour and appearance: it is white if the limestone is composed solely of calcite (100% CaCO3). Marble is used for construction and decoration; marble is durable, has a noble appearance, and is consequently in great demand. A large quantity of powder is generated during the cutting process. The result is that the mass of marble waste which is 20% of total marble quarried has reached as high as millions of tons. This huge unattended mass of marble waste consisting of very fine particles is today one of the environmental problems around the world Concrete is a heterogeneous mix of cement, aggregates and water. The global consumption of natural sand is too high due to its extensive use in concrete. The demand for natural sand is quite high in developing countries owing to rapid infrastructural growth which results supply scarcity. To overcome from this crisis, partial replacement of natural sand with marble powder sand is economic alternative. The concrete industry is constantly looking for supplementary material with the objective of reducing the solid waste disposal problem. Marble powder are among the solid wastes generated by industry. In this research we prepared three specimens for each sample of cubes for compressive strength test, cylinder for split tensile strength test.

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