Microstructure of Concrete Containing Sandstone Cutting Waste - A Technical Report

Abstract:

Sedimentary rocks being a historical building stone are formed by deposition of sediments & further cementation of organic & mineral particles at the earth's surface. These rocks comprise of grains predominantly with quartz content besides Plagioclase-albite, Feldspar, lithic fragments. In this research work, sandstone cutting waste was explored from the Bayana basin (Bharatpur), Rajasthan (India) and utilized in cement concrete by replacing natural sand to further evaluate its effect on the microstructure of concrete. These sandstone cutting wastes were utilized in concrete by opting 0.40 water-cement ratio, after evaluating its chemical & physical properties and the same concrete samples were studied by using scanning electron microscopy, thermogravimetric analysis and optical microscope besides the mercury intrusion porosimetry. Microstructure study of concrete consisting of sandstone cutting waste investigates its influence on physical & mechanical properties. The microscopic evaluation disclosed the formation of interconnecting voids in the concrete comprises sandstone cutting waste beyond its 30% substitution in concrete. The Optical microscope studies indicate the homogenous distribution of aggregates up to 30% sandstone cutting waste in concrete. Better thermal resistance was observed for concrete samples comprises of sandstone cutting waste at elevated temperatures. Effective use of sandstone cutting waste not only reduces the burden of waste in the mining region but also enhance sustainability in cement concrete construction.

• Periodical: Materials Science Forum (Volume 1019)
• Pages: 92-101
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1019.92
• Online since: January 2021
• Authors: Sanjay Mundra*, Vinay Agrawal, Ravindra Nagar
• Keywords: Microstructure, Optical Microscope Mercury Intrusion Porosimetry, Sandstone Cutting Waste, Scanning Electron Microscope, Thermos-Gravimetric Analysis

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