Performance studies of fiber-reinforced municipal solid waste incineration bottom ash amended with cement for Geotechnical applications

This paper presents a study to quantify the optimum augmentation of cement and randomly allocated polypropylene fibers on the achievement of cement stabilized and fiber-reinforced MSWI ash mixes. Five specimens of the mixes were examined in this study. For each sample, fiber contents were varied from 0.5, 0.75, and 1% and the MSWI ash was compensated by 2, 4, 6 and 8% cement, respectively. The specimens were cured for the age of 7, 14 and 28 days, respectively. For the purpose of the investigation, tests for unconfined compressive strength (UCS) and split tensile strength (STS) were conducted. The results obtained indicate that the inclusion of cement and fibers leads to significant advancement in strength. The study underlines the effective utilization of Municipal solid waste incineration (MSWI ash), a common pozzolanic waste, as an important civil engineering material. The outcomes of the study also validate that enhancement of fiber used to stabilize MSWI ash introduces a drop in stiffness and compressive strength values, and also, the loss of strength declines after a peak hence the behaviour changes from brittle to more ductile.