This paper presents newly developed geopolymer mixtures composed primarily of class F fly ash and recycled sands (rubber, glass, and gypsum). The aim is to explore and evaluate the compressive strength of geopolymer mortars when natural sand, crushed glass, rubber crumbs, and natural gypsum powder are added. The results show that mixtures with 100% replacement of natural sand with crushed glass have resulted in compressive strength similar to natural sand mixtures. The rubber crumbs and gypsum powder mixtures resulted in lower strengths when used in 6% and 5% respectively. © 2023 EURATOM.

K.V.L. Subramaniam

Department of Civil Engineering

M. Shamsah

R. Khalfat

Indian Institute of Technology Hyderabad (IITH) is a premier institute of science and technology established in 2008. IITH has been consistently ranked in the&nbsp;<a href="https://iith.ac.in/reports/" rel="noopener noreferrer">top 10 institutes</a>&nbsp;in India for Engineering&nbsp;<a href="https://www.nirfindia.org/2021/EngineeringRanking.html" rel="noopener noreferrer" target="_blank">according to NIRF</a>&nbsp;making it one of the most coveted schools for science and technology in the country.

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Journal	AIP Conference Proceedings
Publisher	American Institute of Physics Inc.
ISSN	0094243X