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Durability and Strength of Lime Sludge by Partial Replacement of Cement

Author(s):

Mr. G. Duraisamy , Mahendra Engineering College; Mr. Y. Shantharam, Mahendra Engineering College

Keywords:

Concrete, Lime Sludge, PAC, Casting

Abstract

Concrete is a composite construction material composed of aggregate, cement and water. There are many formulations that have varied properties. The aggregate is generally coarse gravel or crushed rocks such as lime stone or granite, along with a fine aggregate such as sand. The cement commonly Portland cement and other cementitious materials such fly ash and slag cement, serve as a binder for the aggregate. Various chemical admixtures are also added to achieve varied properties. Water is then mixed with this dry composite which enables it to be shaped and then solidified and hardened into rock-hard strength through a chemical process called hydration. The water reacts with the cement which bonds the other components together, eventually creating a robust stone-like material. Lime sludge is generated from paper, acetylene, sugar, fertilizer, sodium chromate, soda ash industries, and water softening plants. Approximately 4.5 million tons of sludge in total is generated annually from these industries. It is extracted by the precipitators in the smokestacks of coal-burning power plants to reduce pollution. About 120 coals based thermal power stations in India are producing about 112 million tonne per year. In the present study, concrete cubes have been cast by Partial replacement of cement with various percentage lime sludge. The method adopted in this investigation is as per the IS code specifications.

Other Details

Paper ID: IJSRDV7I30537
Published in: Volume : 7, Issue : 3
Publication Date: 01/06/2019
Page(s): 664-667

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