Evaluating the Effect of Crumb Rubber on the Fracture Properties of Asphaltic Materials Using a Standardized Composite

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Ghanbari, Amir |

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47816 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Motamed, Arash
Abstract:
Fatigue cracking has a major impact on the performance of flexible pavements. Many test methods have been established to evaluate and estimate the fatigue life of asphaltic materials. Most of these test methods cannot successfully examine the fatigue properties of asphaltic materials. Recent studies demonstrate that using a standardized composite, which consists of glass beads and asphalt binder, can simulate the stress states that binder experiences in the field. This research used standardized composite to investigate the effect of crumb rubber on the fracture properties of asphaltic materials. To validate the test results, the authors conducted fracture tests on the Fine Aggregate Matrix (FAM) and full asphalt mixtures. Test results clearly showed that this approach can be successfully used to find the effect of different additives on the mechanical porperties of asphaltic materials
Keywords:
Bitumen ; Crumb Rubber Modifier ; Stress Distribution ; Fatigue Crack ; Fracture Mechanism ; Asphalt Mixture ; Fatigue Properties ; Standardized Composite

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