International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
AN EXPERIMENTAL INVESTIGATION ON STRENGTH CHARACTERISTICS OF CONCRETE BY PARTIAL REPLACEMENT OF CEMENT WITH DOLOMITE AND OYSTER SEA SHELL D. Sreehari Rao1, Guduguntla Venkata Sai Rithik2 1Assistant Professor, Department of Civil Engineering, S.V University College of Engineering, Tirupati, Andhra
Pradesh, India.
2MTech Civil – Structural Engineering, S.V University College of Engineering, Tirupati, Andhra Pradesh, India.
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Abstract - Concrete is most adaptable, durable and reliable
large quantity of concrete. Cement manufacture contributes greenhouse gases both directly through the production of carbon dioxide when calcium carbonate is heated, producing lime & carbon dioxide and indirectly through the use of energy, particularly if the energy is sourced from fossil fuels. The cement industry produces about 5% of global man made CO2 emissions, which 50% is from the chemical process, and 40% from burning fuel. The amount of CO2 emitted by the cement industry is nearly 1.0 tons of CO2 for every 1.0 ton of cement produced.
construction material over the world and it is the most important basic material in all civil engineering structures. The production of cement in world has greatly increased, due to this emission of CO2 gas has been increased ultimately leads to environmental pollution. Research is taking place on all corners of the globe in search of different material options. The Present study aims to explore the feasibility and effectiveness of using Dolomite and Oyster Sea Shell as partial replacements of Cement in Concrete Production. Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate (CaMg(CO3)2). Oysters are the dead remains of Aquatic organisms. The Experimental investigation is carried out on M30 Grade of Concrete. Firstly, the cement is partially replaced with Dolomite powder ranges from 0%, 5%, 10%, 15%, to 20%. Further, find the optimum % of Dolomite powder. Then with that optimum % of Dolomite powder, the cement is replaced with Oyster Sea Shell powder in percentages of 0%, 5%, 10%, 15%, and 20%. The properties of hardened concrete such as Compressive strength, Split tensile strength, Flexural strength, Non-Destructive Tests like Rebound hammer and Ultrasonic pulse velocity are determined by conducting laboratory experiments on concrete samples and the results are compared with conventional concrete. The findings of this study reveal that 10% of Dolomite powder and 10% of Oyster Sea Shell powder are optimum replacements which has significant effect on the strength properties of concrete.
In the present era of development due to advanced techniques, material availability and growing standard of living, the construction activities are increasing exponentially with time. The increased construction activities and exploiting the available natural resources drastically are posing serious environmental problem. However construction activities leading to development in social and economic aspects cannot be stopped or reduced for the sake of conservation of natural resources. Therefore, there is a need to explore alternative building materials from industrial, agricultural waste and coastal waste materials. Researchers all over the world today are focusing on ways of utilizing different types of waste materials as a source of raw materials for industry. Replacing alternative materials in cement for concrete production is important to address environmental concerns, conserve natural resources, reduce costs, and improve the performance of concrete. Dolomite powder and oyster sea shell powder are two such materials that have shown potential in replacing cement in concrete production.
Key Words: Dolomite powder, Oyster Sea Shell powder, Compressive strength, Split tensile strength, Flexural strength and Non-Destructive Tests, Concrete Mix design M30.
1.1 Dolomite Powder It is a carbonaceous (or) carbonate material which is composed of calcium magnesium carbonate [CaMg(CO3)2]. Dolomite Powder is the limestone powder with composition of CaCO3 and MgCO3 pertaining to 100% in combination, the proportion being varied as per mining zone. It is formed from limestone, which is subjected to high pressure and temperature in the earth’s crust. It is also called as dolostone (Dolomite Rock). It is commonly used as a filler material in a wide range of industrial applications, including in the
1. INTRODUCTION Concrete is the most widely used man-made building material in the world, owing to its versatility and relatively low cost, concrete has also become the material of choice for the construction of structures exposed to extreme condition (Lomborg(2001)). Concrete plays a vital role in the development of infrastructure Viz.., buildings, industrial structures, bridges and highways etc, leading to utilization to
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