Properties of Rubberized Bitumen Mixes Prepared with Wet and Dry Mixing Process

抄録

It is estimated that Malaysia production of scrap tires is about 10 million pieces per annum and they are currently being disposed in an environmentally unfriendly manner, either burnt or buried in designated areas. The production is expected to increase in the future and the incorporation of these tires in roads would greatly reduce a potential environmental disaster in the country. Rubber is a naturally occurring polymer, and a very good one, when added to bitumen it will increase its elasticity, decrease its brittle point and increase its softening point. The objective of this study is to examine the properties of rubberised bituminous mixes that are prepared with dry and wet mixing process with different percentages rubber crumbs. Parameters examined in this study are the resilient modulus, wet abrasion loss, void analysis and the permeability coefficient. The amounts of rubber used are 1%, 2% and 3% with respect to the weight of binder used in each sample.