Production of Paving Stone (Interlock) from Nylon Waste

Abstract

Nylon waste is a silent threat to the environment and its disposal leads to harmful effects on the environment, since waste nylon has low biodegradability. In this study, melted waste nylon aggregate was used as a binding agent in full replacement of cement with sharp sand aggregate in paving stones production. Test on water absorption, porosity, compressive strength and weather effect test were carried out on two different percentages of 30% and 70% (waste nylon and sand) ratio 7:3 and 3:7. The result shows that, the interlocks produced with 30% waste nylon and 70% sharp sand (3:7) absorbed water than the interlocks produced with 70% nylon and 30% sharp sand (7:3).  Also, the interlocks containing 70% waste nylon and 30% sharp sand (7:3) has higher compressive strength (stronger) than that of 30% waste nylon and 70% sharp sand (3:7) at different temperature. Base on the test, results, findings and conclusion, the following recommendations were made: Government should invest in using sand aggregate with waste nylon to make paving stone and create more awareness of this new innovation to the public, this could serve as waste reduction and employment opportunity.