摘要
采用正交实验法验证了掺杂橡胶颗粒目数、掺杂比例、剪切温度与时间对橡胶沥青的粘度、针入度、软化点、延度、弹性恢复率的影响,并按最优方案混制了橡胶沥青混合料(RAM),并对其路用性能与普通沥青混合料(AM)进行了对比研究。结果表明,掺杂20%、40目的胶粉,在150~170℃的温度下拌和90min,所制备的橡胶沥青具有最优的性能,由其混制的RAM高温稳定性、低温抗裂性以及水稳定性都明显优于AM,其中动稳定度提高了52%,车辙深度降低了近26%,变形速率降低了近60%,抵抗破坏应变的能力较AM提升了15.6%。各方面性能都有明显提升,具有良好的应用前景。
In this paper, viscosity, penetration degree, softening point, ductility and elastic recovery were studied, focusing on using orthogonal experimental design method to study the above mentioned properties with different meshes and proportions of rubber powder as well as shear temperature and time. Rubber asphalt mixture（RAM） was mixed following the optimal scheme, and its pavement performances were studied compared to asphalt mixture（AM）. The results show that RAM with 20% rubber powder of 40 meshes and blended at 150- 170 ℃ for 90 min shows better high temperature stability, low temperature anti-cracking performance and water stability than AM. The dynamic stability and the ability to resist damage strain are increased by 52% and 15.6% , while the rutting depth and the deformation rate are reduced by nearly 26% and 60% respectively. All aspects of RAM have been improved obviously than AM, owning a good application prospect.
作者
王学民
田国锋
王蓉蓉
龚小琴
WANG Xuemin;TIAN Guofeng;WANG Rongrong;GONG Xiaoqin(Department of Transportation Engineering,Hebei University of Water Resources and Electric Engineering,Cangzhou 061001,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2018年第6期129-134,共6页
Journal of Functional Materials
关键词
橡胶粉
沥青
粘度
稳定度
rubber powder
asphalt
viscosity
dynamic stability
