Evaluation of Sustainable Asphalt Mixture

Adil Al Tamimi ； Isam A. H. Al Zubaidy ； Abhijit Upadhye ； Liyakat Ali

《Study of Civil Engineering and Architecture》 3卷 (2014/12) Pp. 41-47

並列摘要

Waste crumb rubber has been used as one of the modified binding material for asphalt production. Three percentages of crumb rubber of 5, 10, and 15% by mass of the binder content were considered to produce crumb rubber modified bitumen ＂CRMB＂. It is proposed that different percentages of crumb rubber modified bitumen (CRMB) were mixed with the asphaltic concrete and used in paving roads. The new mix contains relatively small amount of CRMB in addition to aggregate, asphalt binder and air. Marshall Stability and flow, density, void analysis, and other characteristic tests were conducted for all these samples to evaluate the asphalt concrete road according to UAE standards. From these tests it was clearly shown that the addition of waste rubber crumb had a significant effect on the behavior of final asphalt paving road. It was found that; the more percentage added of rubber tire the higher voids in mineral aggregate; 5% rubberized bitumen yielded the maximum amount of strength among other percentages. The less the amount of rubber in the mix the higher flow can be gained; 15% of CR gave the maximum viscosity; furthermore, ductility was determined for all results. Results showed that the higher the amount of rubber crumb in the bitumen, the more chance of the sample to recover after the load is released.

並列關鍵字

Waste Tire Powder ； Bitumen ； Rubber Asphalt