Enhancing the performance of crumb rubber-modified binders through varying the interaction conditions

被引:84
作者
Attia, Mohamed [1 ]
Abdelrahman, Magdy [1 ]
机构
[1] N Dakota State Univ, Dept Civil Engn, Fargo, ND 58105 USA
关键词
asphalt rubber; modified binder; CRM; superpave application; terminal blend;
D O I
10.1080/10298430802343177
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Traditional crumb rubber-modified (CRM) binders produced with coarse particles according to the McDonald method, the wet process, raise engineering as well as environmental concerns for their suitability in Superpave applications. This paper investigates the possibility of producing high-performance terminal blending CRM binders suitable for Superpave applications through the wet process. This paper re-examines the asphalt-rubber interaction mechanism and focuses on controlling the swelling of crumb rubber particles through varying the interaction conditions. This study considers parameters such as time, temperature, shearing speed and the addition of polymer modifiers to enhance the binder performance properties to meet the requirements of Superpave mixes. Rubber-modified terminal blends are very different from the McDonald-type binders and so are the conditions required for each binder type. The binder properties of interest are those related to performance and compatibility.
引用
收藏
页码:423 / 434
页数:12
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