Effect of Flyash on the Strength Characteristics of Waste Plastic Fibre Reinforced Concrete - an Experimental Investigation

In this paper an attempt has been made to study the effect of addition of flyash and replacement cement by flyash in different percentages on the properties of workability and strength characteristics of waste plastic fibre reinforced concrete. The strength characteristics viz., compressive strength, tensile strength, flexural strength, impact strength and workability characteristics are found for waste plastic fibre reinforced concrete, when flyash was added in different percentages viz, 0%, 5%, 10%, 15%, 20%, 25% and replaced in different percentages viz, 0%, 5%, 10%, 15%, 20%, 25% , 30%, 35% and 40% respectively by weight of cement. Waste plastic fibres having an aspect ratio 50 (thickness = 1mm, length = 50mm and breadth = 5mm) were added at the rate of 0.5% (by volume fraction). The results show that upto 10% of flyash can be added and 25% of cement can be replaced by flyash by weight of cement into waste plastic fibre reinforced concrete, without adversely affecting the compressive strength and with advantage in other strength properties.