INVESTIGATION INTO THE USE OF SOLID WASTE PLASTICS AS PARTIAL REPLACEMENT OF FINE AGGREGATE IN MAKING CONCRETE PAVING SLABS

Abstract
Solid waste is one of environmental pollutant facing all the earth continents, waste plastics can be recycled to produce new materials like concrete or mortar instead of disposing them into the environment where it cannot biodegrade like other organic waste. An added advantage of plastics help to reduce cost of construction material as well as reducing environmental pollution. Test on compressive, tensile, strength test was done on replacement of fine aggregates partially in concrete class 20 at different percentage from 10%, 20%, 30% and 50%.It shows some significance slide changes in strength but within the permissible limit at a percentage of 10% and 20%.These percentages of plastics replaced can be mixed in concrete as fine aggregate materials in making precast paving slabs an
d blocks. Further precise research need to be done to evaluate the most efficient and effective percentages of plastics replaced partially as fine aggregates without any change in both compressive and tensile strengths. This project too can bridge the gap between undergoing research and practices done on production of concrete for pavements. Pre- cast concrete has proven to be an efficient method of construction, particularly when time is considered. It is justifiable to use lightweight concrete to make pre- cast concrete elements. Its advantages are that there is a reduction of dead load, faster building rates in construction and lower haulage and handling costs. Therefore, this fundamental study report is prepared to show how with proper materials engineering education, shredded plastic waste can be used to provide a solution on how to utilize plastic waste material against pollution of environment.
Focus was on the appropriate concrete design method to be used for plastic concrete, its performance in terms of compressive strength, water absorption and density and supplementary tests and comparisons with normal weight concrete.

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