AN EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF ALKALI ACTIVATED SLAG CONCRETE

Alkaline activator technology is the key determinant factor in alkali activated slag concrete. Ground Granulated Blast Furnace Slag (GGBS) is one which holds outstanding distinctive properties such as workability, strength, reduction in cost and time and substantial effective in construction. The present work deals with two major aspects one is effect of fibers on fresh and hardened properties of alkali activated slag concrete. The alkali activated slag concrete mixes of M1 indicating 2M, M2 is of 4M and M3 is of 6M were prepared with incorporating fibres by varying percentage of 0% to 1.5% by weight of cement at the interval of 0.5% and the binder ratio of sodium silicate to sodium hydroxide alkaline liquid is 0.4, 0.5 and 0.6. The result obtained from this work revealed that workability tends to decrease with increase in molarity and for M2 mix the slump obtained was 45-50mm. The compressive strength and split tensile strength were increased for M3 mix with binder ratio of 0.5 and 1%fibre content and the flexural strength is increased for M3 mix with binder ratio of 0.4 and 1% fibre content.