Construction of Concrete Paving Blocks using Industrial Wastes

Current research investigation is an attempt of utilization of industrial wastes like fly ash and plastic waste in concrete for the construction of concrete paving block as partial replacement of cement and coarse aggregate with the water cement ratio of 0.55 and 0.6.The concrete paving block was constructed with the nominal mix of 1:2:4, partial replacement of cement and coarse aggregate were 15% and 5% with fly ash and plastic waste. The research objectives are to determine the compressive strength, flexure strength and split tensile strength of concrete paving block. Specimens were tested for duration of 7, 14 and 28days. The study shows that the cement can partially be replaced with fly ash and coarse aggregate can partially be replaced with plastic waste. The biggest advantage of utilization of fly ash and plastic waste in concrete paving block can reduce its unused excessive amount. Due to the disposal of these materials in open land, a large area is affected and remains useless, also fly ash dust is becoming problem for open atmosphere. Utilisation of industrial waste materials in concrete can leads towards the reduction of environmental pollution. Result of the experimental program shows that in 0.55 water cement ratio Mechanical strength of concrete specimens like compressive strength, split tensile strength and flexural strength are almost same after 28 days testing in laboratory.