Assessment of Strength and Durability Parameters of Geopolymer Concrete Blocks with Different Sand Replacement Levels

Abstract:

The burned clay brick industry produces approximately 360 billion bricks per year, causing major land degradation and unprocessed pollutants. The quantity of bricks necessitates the use of 15,500 hectares of land. The topsoil necessary to produce traditional brick is 2200 m3 / billion bricks per year, whereas only 0.75 hectare of surface of land is needed to produce millions of clayey bricks each year. Another aspect of environmental degradation was its inefficient use of fly ash, which would be created by thermal power stations (TPS). Around 120 million tonnes of fly ash were produced yearly in India through 260 million tonnes of coal (65 percent of India's annual coal production), covering nearly 15,000 hectares of useable land. Apart from fly ash, a variety of materials, such as clay, silica fume, and bottom ash, could be used as pozzolanic materials which react with both the alkaline activator. The influence of chemical activators, their proportioning, curing conditions, and curing time all impact the strength properties for geopolymer materials. As a result, geopolymer development has a wide range of applications. Compressive strength, water absorption, and sulphate attack were all measured on geopolymer concrete mixes. The objective of this investigation findings was compared to the fly ash based geopolymer concrete block made of natural aggregate with different replacement levels of fine aggregate as natural sand, manufactured sand and Ecosand with required mix proportion are all within the IS 15658 guidelines.

• Periodical: Key Engineering Materials (Volume 961)
• Pages: 85-93
• DOI: https://doi.org/10.4028/p-YhLWD0
• Online since: October 2023
• Authors: C. Vivek Kumar*, P. Suresh Chandra Babu, M. Sheik Mohamed Anas, V. Naresh Kumar Varma, Chelpuri Hemalatha
• Keywords: Compressive Strength, Eco Sand, Fly Ash, M Sand, Sulphate Attack

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