Comparative study on the performance of one part and two part geopolymer concrete

Abstract

As cement is the primary cause of CO2 emission, an attempt is made to replace the cement and it is done by replacing the cement with GGBS and silica fume along with activators such as sodium silicate and sodium hydroxide. By enrolling such materials in concrete, it will ensure the reduction of environmental consequences. This research is done by replacing of the cement with GGBS and silica fume without involving any type of admixtures. And it is done for M 30 grade with varying GGBS i.e., 90%, 80%, 70% and 60%. And to accelerate the pozzolanic effect, silica fume is added in diverse proportions i.e., 10%, 20%, 30% and 40%. Sodium hydroxide is kept constant throughout. Specimens were prepared for testing and ambient curing of 7 & 28 days has done. Tests such as compressive, split-tensile and flexural strength test are performed to obtain the mechanical behaviour of the concrete.

Keywords

• ground granulated blast- furnace slag
• silica fume
• compressive strength
• split- tensile strength
• flexural strength