Open AccessRheological and strength behaviour of red mud - slag geopolymer composites
Author(s) -
S Sreelekshmi,
R. Satheesh Chandran,
Sera Rachel Varghese,
; Naeem,
Thushara Raju,
K P Ramaswamy
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/989/1/012005
Subject(s) - red mud , geopolymer , materials science , compressive strength , fly ash , portland cement , composite material , leaching (pedology) , slag (welding) , geopolymer cement , cement , metallurgy , environmental science , soil science , soil water
Alkali activated concrete (AAC) is accepted as impending alternatives to conventional Ordinary Portland cement concrete in order to limit CO 2 emissions as well as beneficiate a number of wastes into useful products. This study aims to explore the possibilities of using red mud, which is a waste product of aluminum manufacturing industry, as a geopolymer solid binder. The fresh properties such as setting time, workability and penetration resistance and the hardened properties like compressive strength and ultra-sonic pulse velocity (UPV) test of various red mud mixes along with fly ash (FA) and slag are found out. Also some of the specimens were immersed in water to check if there is any leaching. From the study it was identified that the mix with 25% red mud and 75% slag gives a better workability and strength characteristics.