A review of utilization of coconut shell and coconut fiber in road construction

Abstract

This paper provides a review of utilization coconut shell and coconut fiber in road construction. Coconut shell and coconut fiber are new waste materials used in highway industry. Some studies showed that coconut fiber can increase the stability, skid resistance and resilient modulus while coconut shell can improve the indirect tensile strength and static creep behavior of the modified asphalt pavement. In contrast, coconut fiber does not improve the fatigue life of the modified bituminous mixes. In general, the previous research illustrates that coconut shell and coconut fiber significantly improves the engineering properties of asphalt mixtures when mixed with modified bitumen.