Effect of Mineral and Chemical Admixture for Improvement of High-Performance Concrete

Abstract

Concrete is most versatile and widely used construction material. It has ability to mould when it is fresh. It also shows remarkable strength and durability when it is hard. It is the material with large synthesis with capita consumption of 1.5 tonnes per annum as far as India is concern. OPC concrete which is designed only considering the compressive strength parameter does not meet other functional requirements. It shows adverse results in aggressive environments in terms of energy adsorption capacity during repair and retrofitting works. It results in need to design HPC with superior performance. HPC mixtures consists of the similar material components to conventional concrete, but with the proportions specifically designed for providing the strength and durability required in terms of structural and environmental requirements for the project. Use of supplementary cementing material of specific mineral origin usually plays an important role resulting in HPC. They can be used for various purposes depending on their properties and requirements. Chemical composition of mineral admixtures used with very low water cement ratio plays the vital role in enhancing properties of concrete. The use of supplementary cementing materials to produce HPC improves the strength and durability of concrete and at the same time help to dispose the industrial by-product (waste) reducing the alarming environmental threats. This paper described the study carried out to check the use and suitability of marble and porcelain waste powders through strength activity test along with analysis of role of their chemical composition to produced HPC.