Abstract
In this study, the effect of temperature, binder content and compaction on the resilient modulus of hot mix asphalt (HMA) were studied. The samples were prepared by using gyratory compaction method. The resilient modulus of samples that were prepared with different binder content and compaction effort were determined by Indirect Tensile Method (ASTM – D4123). To increase the accuracy, the tests were conducted on two similar samples and the results were discussed by using both tests. The results show that with increasing temperature, decreasing binder content and increasing compaction effort, the resilient modulus of hot mix asphalt increase. Based on the results of this study, the variation of resilient modulus with temperature, binder content and gyration number was estimated by using a mathematical model. Comparison of the prediction of this model with experimental results shows that the model is acceptable.
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