#TITLE_ALTERNATIVE#

• Main Author: SAJJAD (MUHAMMAD SAJJAD), MUHAMMAD
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23338
• Institution: Institut Teknologi Bandung

Road infrastructure is still a primary choice as a connector between regions inIndonesia. According to the Ministry of Public Works and People's Housing (2016), <br /> <br /> the current length of national roads that are in a poor and very poor condition is 5,380 km. Poor condition usually occurs only on the surface layer while very poor <br /> <br /> condition has reached the base layer so that reconstruction should be done. One way to prevent reconstruction is to create a crack resistant asphalt concrete base (ACBase) by using polymer elastomeric modified bitumen with performance grade higher than Pen 60/70 bitumen in order to have higher mixture lexibility and stiffness characteristcs so as to be more resistant to cracking without decreasing the stiffness modulus. <br /> <br /> <br /> Asphalt concrete base (AC-Base) mixture is designed in accordance with the general specifications of the Ministry of Public Works and People's Housing and will be tested using Marshall test, Resilient Modulus and fatigue resistance test by four point loading controlled stress method. DSR testing is performed to find outthe performance grade of the asphalt used. <br /> <br /> <br /> The elastomeric polymer content in the modified bitumen makes the bitumen harder, more resistant to high temperature, more resistant to aging, has a higher <br /> <br /> elasticity than the Pen 60/70 bitumen and has a performance grade equivalent to PG 76 (SPG 76). Compared to the Pen 60/70 mixture, Marshall Immersion stability of SPG 76 mixture is higher 7,25%, the fatigue life is 1,9 times longer at stress level 1000 kPa and 24,0 times longer at stress level 750 kPa, and the Resilient Modulus value is 16% higher at temperature 45°C.