An experimental investigation on basalt fibre reinforced concrete subjected to sulphate attack
  Haris Hazaratbhai, B.R Patagundi and S.S. Salimath
  This paper is based on an experimental investigation on basalt fibres which originated from volcanic rocks and were melted at high temperatures. These rocks were available from the earth’s deep crust. M30 grade of concrete was designed as per IS 10262:2009 with basalt fibres. The fibres along with mineral admixtures were used in three different proportions, that is 0%, 1%, 2%, 3% by weight of cement . The objective was to determine properties of fibre reinforced concrete with different fibre proportions. The strength properties such as compressive strength, split tensile strength, flexural strength, shear strength and the effect on strength of concrete when it was subjected to sulphate attack, after stipulated days of curing were studied and compared. From the investigation it was found that the basalt fibre increased strength of concrete even when subjected to sulphate attack gradually as compared to conventional concrete. The optimum strength of concrete was achieved with addition of 2% basalt fibre.