Improve the Marshall stability of porous asphalt pavement with HDPE addition

Elsa Eka Putri,Oliensia Vasilsa,M Olivia,E Saputra,K Yamamoto,G Pringgana,I.D Ketut Sudarsana,R Ridwan,A Marto,I.M Agus Ariawan,M Infantri Yekti,G Wibisono,D Wishart,D Andrio

doi:10.1051/matecconf/201927603005

Abstract

Porous asphalt is a gap graded pavement that is 20% air voids which enables rainwater that falls on the road surface to flow through the pavement and into drainage on the side of the road. Porous asphalt has a high shear resistance and dries quickly but its stability is low, it is costly to maintain and needs replacing after only a short time. Despite these disadvantages, porous asphalt is still a good choice in area that experiences heavy annual rainfall. High Density Polyethylene (HDPE), an opaque plastic, is harder and stronger than porous asphalt with a tensile strength of 3100-5500 psi. It is resistant to high temperatures. This study aims to investigate the effect of various percentages of HDPE as an additive to produce an HDPE Asphalt Binder for porous asphalt pavement. Marshall parameters were determined based on the AAPA 2004 standard. It was found that 4% HDPE achieved a maximum stability value of 870 kg at the optimum asphalt content for porous asphalt pavement was 5.54%. Stability of porous asphalt pavement with optimum asphalt content value was 61.1% higher after the addition of HDPE. Thus, the use of HDPE as an additive in Asphalt Binder was able to increase the binding strength of the asphalt minimising the disadvantages of the low stability of traditional porous asphalt pavement.

Highlights

The type of asphalt mixture is generally determined by the aggregate gradation, asphalt, and the mixing or compacting temperature
The flash point and softening point increased with the increasing High Density Polyethylene (HDPE) content indicating that addition of HDPE to the binder makes it less susceptible to temperature changes
The stability values of the porous asphalt were found to increase with the amount of HDPE up to 4% HDPE plastic in the asphalt

Summary

Introduction

The type of asphalt mixture is generally determined by the aggregate gradation, asphalt, and the mixing or compacting temperature. Typical porous asphalt had an open-graded surface and was initially developed in countries as a wearing surface spread over the surface of a more stable base [1]. Porous asphalt mixture generally has a low stability value which is highly dependent on the quality of binder, since the strength of the porous asphalt depends on the properties of the binder to hold the aggregate together. An asphalt binder can be modified with the addition of material to improve the physical properties of asphalt such as viscosity, penetration, and a softening point (Directorate General of Highways, 2004) [3]. Some additives which improve the quality of asphalt https://doi.org/10.10 51/matecconf /201927603005 include elastomeric polymers like rubber or plastics from waste material which, like asphalt, melt on heating [4]

Objectives

Methods

Conclusion