High temperature resistant rubber asphalt

¹ Ministry of Public Works and People’s Housing, 12110 Universitas Andalas, Indonesia
² Civil Engineering Department, Faculty of Engineering, 12110 Universitas Andalas, Indonesia

^* Corresponding author: elsaeka@eng.unand.ac.id

Abstract

Rubber Asphalt is the asphalt with rubber addition. The addition of rubber to asphalt was expected to have higher stiffness and longer durability that can be identified by its properties, that are softening point, penetration and ductility. The 60/70 penetration asphalt has been mixed with 7% rubber. Mixing of rubber with asphalt was quite a challenge. The liquid rubber or solid rubber should be processed through prevulcanization in the asphalt plant. The properties of the rubber asphalt have been investigated in the laboratory of BPJN West Sumatera. Hence, the properties of rubber asphalt have followed the Bina Marga standard for pavement mixture, i.e. the softening point value is >52°C, the ductility is more than 140 cm, and the burning point was above the 310°C. By determined the index penetration of the rubber asphalt that is. Thus, it can be concluded that the 7% rubber asphalt has resulted in the higher resistance to higher temperature binder.