Effect of plastic waste content on Physico-Mechanical properties of flexible pavements

This paper presents the results of an experimental investigation carried out to study the effects of the use of plastic waste instead of cement on the physical and mechanical properties of pavements. The plastic waste (PE, PET and PP) contained 20%, 30% and 40% (by weight) are used as a binding material in the manufacturing of the flexible pavements. Tests were performed to determine porosity to water, splitting tensile strength, abrasion resistance and slip resistance of the studied pavements. The results indicate that the use of plastic waste enhance abrasion resistance and slip resistance of 20% and give pavements with low porosity (less than 5%). The splitting tensile strength of these pavements is in the same order as that of concrete pavements for plastic waste content higher than 30%. The results show continuous improvement in mechanical properties depending upon plastic waste content. Use of plastic waste as a binder significantly improves splitting tensile strength on flexible pavement independently of plastic type. Relationship between content of plastic waste with that of splitting tensile strength and abrasion resistance is also presented.