Durability Studies on Red mud and GGBS based Geopolymer Concrete

VIDYASHREE B S

International Journal of Geological and Geotechnical Engineering

Durability Studies on Red mud and GGBS based Geopolymer Concrete

VIDYASHREE B S

Abstract

The aim of the study is to evaluate the performance of geopolymer concrete and conventional concrete. In the present work, two Industrial by-products such as Red Mud and ground granulated blast furnace slag (GGBS) of 25:75 proportion is used for geopolymerisation. Red mud is a by-product from Alumina industry. GGBS is a by-product from iron industry. To develop a bond between binder and aggregates to form a geopolymer concrete feldspar activator is used with an alkaline solution made up of sodium hydroxide of 10M with an alkali activator to binder ratio 0.35. Whereas conventional concrete of M40 grade is used for comparison. The study investigates the performance of concrete mixtures in terms of durability characteristics and elevated temperature effect on concrete. The durability tests conducted are acid resistance test, sulphate resistance test, chloride resistance test and accelerated corrosion test. Elevated temperature test was carried out at 100OC, 200OC and 300OC for an interval 2 and 4 hours. Results showed that geopolymer concrete is more durable than conventional concrete but has better performance in Elevated temperature test.

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Durability Studies on Red mud and GGBS based Geopolymer Concrete

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