9Airey G, Rahman M, Collop A. The influence of crude source and penetration grade on the interaction of crumb rubber and bitumen [C]//Asphalt Rubber 2003 Conference. Brasilia, Brazil, 2003:375 - 398.
10Xiao F P, Putman B J, Amirkhanian S N. Laboratory investigation of dimensional changes of crumb rubber reacting with asphalt binder[ C ]//Asphalt Rubber 2006 Proceeding. Palm Spring, California, USA, 2006:693 -714.