STUDIES ON BEACH SAND WITH ADDITIVES IN WARM MIX ASPHALT

Basavaraj M Rajoor, Pradeep Maisnam

Abstract: The properties of Asphalt and Asphalt mixes can be improved to meet the requirement of pavement with the incorporations of certain additives or a blend of additives which are known as Asphalt modifiers. This is expected to give higher life of surfacing depending upon degree of modifications and types of additives, trial test studies. These Asphalt modifiers are like natural rubber, crumb rubber, waste plastic, and some polymers like polyethylene, ethylene vinyl acetate, and styrene-butadiene-styrene. This report deals with the properties of bituminous mixes can be improved further with the addition of chemical additives like Sasobit in varying percentages. The main objective is to study the stability of bituminous mixes by partial replacement of dust by Beach Sand in varying percentages by carrying out Marshall Stability Test and to study the performance of indirect tensile strength and fatigue life of the bituminous mixes. It is shown that the stability of the mixes without replacement of dust by beach sand has good performance when compared with replaced specimens.

Keywords: Warm Mix Asphalt, Beach Sand, Crumb Rubber Modified Bitumen, Marshal Stability, Indirect Tensile Test, Fatigue.

DOI: https://doi.org/10.15623/ijret.2016.0511041