Abstract:
Today, cracking asphalt pavement in low temperature is one of the obstacles
for protecting pavement in the cold climates. One of important factors in
extending of these types of cracking is cooling and heating temperature
cycles according to the changes in seasons. Therefore, this research
examines these types of asphalt cracking by considering asphalt mixtures
and using mechanics science. In this research, cold environmental
conditions were determined by making asphalt gyratory asphalt samples and
fracture test in -15°C to study the effect of asphalt mixtures important
parameters, it means asphalt construction materials textile on fracture
resistance of samples. On the other hand, simultaneous effect of two
parameters on asphalt fracture resistance was examined by considering the
effect of freezing and thawing cycles, as well as using siliceous and
calcareous materials. In addition, the effect of this material was studied to
improve asphalt properties and fracture resistance by introducing
antistripping material.
Machine summary:
Effect of Using Anti-Stripping on Fracture Behavior of Asphalt Mixtures Using Linear Elastic Fracture Mechanic (LEFM) Technic Yousef Reza Bayrami1 and Shams Nobakht Dudran2* 1Department of Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran 2Iran University of Science & Technology, Tehran, Iran Original Article: Received 15 Sep. 2016 Accepted 22 Oct. 2016 Published 28 Nov. 2016 ABSTRACT Today, cracking asphalt pavement in low temperature is one of the obstaclesfor protecting pavement in the cold climates.
In this research, cold environmental conditions were determined by making asphalt gyratory asphalt samples and fracture test in -15°C to study the effect of asphalt mixtures important parameters, it means asphalt construction materials textile on fracture resistance of samples.
On the other hand, simultaneous effect of two parameters on asphalt fracture resistance was examined by considering the effect of freezing and thawing cycles, as well as using siliceous and calcareous materials.
Keyword: antistripping,behavior analysis, asphalt mixtures, linear elastic fracture * Corresponding author: Nobakht Dudran Peer review under responsibility of UCT Journal of Research in Science, Engineering and Technology INTRODUCTION Fracture mechanics is one of important issues in mechanical engineering, which studies the fracture process, its prediction, and control in the cracked materials.
The possibility of improving asphalt mixture performance against humidity sensitivity is conducted as following: According to figure (1) and (2), it can be inferred that adding antistripping additive as resistance increasing materials against humidity sensitivity in asphalt mixtures has significant effect in melting and freezing conditions with siliceous materials.