THE INFLUENCEOF SASOBITON THE PERFORMANCE OF BITUMEN AND ASPHALTIC CONCRETE

Abstract

The study assessed the influence of Sasobit polymer on the characteristic properties of bitumen and asphaltic concrete. Sasobit® modified bitumen was prepared by adding Sasobit® to bitumen with increasing weight of Sasobit® at 1.0, 1.5, 2.0, 2.5 and 3 % by the weight of the bitumen. Penetration and softening point tests were carried out on the samples and the mix-ratio for the mixture of bitumen and sasobit was determined. Then asphaltic concrete samples with and without Sasobit® were prepared. Stability test, Flow test, specific density test, voids filled with bitumen (VFB), voids in the mineral aggregate (VMA), and air voids (VA) were all determined with the aid of Marshal Apparatus. The study found the following values of bitumen with sasobit and bitumen without sasobit to be; stability was 14.72, flow was 2.51, specific density was 2.58, voids filled with bitumen was 73.80, air voids was 3.99 and voids filled in the mineral aggregates was 16.52 for sample without Sasobit® were 13.83kN 2.97 mm, specific density was 2.53, voids filled with bitumen was 64.87 %, air voids was 4.34 % and voids filled with mineral aggregates was found to be 18.26 %, respectively. The study concluded based on the result obtained that, Sasobit® as an additive in asphaltic concrete has the potentials to improve its properties.

 

KEYWORDS: Sasobit, Marshal Apparatus, Bitumen, Asphaltic Concrete, Performance, Influence