STRENGTH DETERMINATION OF SELF COMPACTING GEOPOLYMER CONCRETE BY AMBIENT CURING

Abstract

SCGC (Self-Compacting Geopolymer Concrete) is an most revolutionary development in concrete construction, and does not require any additional compaction of concrete. Geopolymer concrete materials are free from Ordinary Portland Cement (OPC). In this paper, the cement has been replaced by GGBS & Bottom Ash as binder material and study its effect on SCGC. GPC (Geopolymer Concrete) comprises of GGBS (Ground Granulated Blast furnance Slag) and Bottom Ash (BA) as an binder material. These binders are the by-product of steel power plant and thermal power plant. These are possessing good cementitious property and very high silica and alumino content. The source binders are activated by means of NaOH (Sodium Hydroxide) and Na2SiO3 (Sodium Silicate) ratio of 2 and liquid/binder ratio of 0.5. The workability properties of SCGC such as filling ability and passing ability are assessed using slump flow, T50cm slump flow, L-box, J-ring, V-funnel test. The mixes areprepared according to EFNARC specifications. The mechanical properties like compressive strength, split tensile strength and flexural strength are also evaluated.Different mixes are prepared with binder ratio of GGBS(100%):BA(0%), GGBS(75%):BA(25%), GGBS(50%):BA(50%)  and exhibit its properties to achieve the high mechanical properties.

Author

Santhi T,Gopi R, Karthick P