Author(s): Danish Hussain Thoker and Sahil Jaggi

Abstract: Present study intends to explore the effect of fibres and different cement proportions on compressive strength, flexural strength and durability properties of lightweight concrete made with light weight aggregates as coarse aggregate. The effect of fibre on modulus of elasticity and Poisson’s ratio of concrete are investigated, and flexural strength, toughness is calculated. Test results show that the effect of volume of fibres and aspect ratio of fibres on flexural strength and fracture toughness is extremely prominent, compressive strength is only slightly improved, and tensile compressive strength ratio is obviously enhanced. Also, deflection of concrete is lowered due to arresting of cracks by fibres. Besides mechanical properties, durability properties also increase.

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