Open AccessFlexural-Creep Stiffness of Asphalt Binders Measured by Simple Developed Apparatus
Author(s) -
Abdulhaq Hadi Abedali,
Yassir Nashaat A. Kareem,
Yasir Mohammed Jebur,
Mohammed Abed,
Yassir Abo Almaali,
Fatimah Fahem,
Rawand M. Badri
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/888/1/012071
Subject(s) - asphalt , materials science , creep , rheometer , composite material , flexural strength , cracking , dynamic shear rheometer , stiffness , bending , bending stiffness , ultimate tensile strength , flexural rigidity , penetration test , beam (structure) , structural engineering , rheology , rut , engineering
As the climate temperature decreases, the flexible pavement will be subjected to high tensile stresses which exceeding to the movement resistance of asphalt binder leading to low temperature cracking. SHRP identified a Bending Beam Rheometer (BBR) for measuring the value of flexural-creep stiffness of asphalt binder at low temperatures which consider this value a good indicator for resistance of low-temperature cracking. This study developed a method for measuring the flexural-creep stiffness of asphalt binder by modification of an apparatus instead of Bending Beam Rheometer due to its expensive cost and unavailable in most research laboratories. A (40-50) penetration grade of asphalt binder used in this study at different test temperatures (-5, 0, 5)°C. The experimental results indicate to the modified apparatus and developed test is suitable for testing an asphalt binder at different temperature and loading time.