摘要
以半刚性基层沥青路面下封层为例,研究了沥青路面层间抗剪强度影响因素。通过对5种下封层材料双层试件的直剪试验,以摩尔-库伦理论为基础评价了沥青材料和集料粒径对下封层抗剪强度的影响,拟合得到了层间τ-σ曲线和摩尔-库伦表达式,并采用灰色关联模型对沥青材料、集料粒径与层间抗剪强度进行关联性分析。结果表明:胶粉改性沥青和粒径5～10mm碎石是较好的下封层材料;沥青材料较碎石粒径对层间抗剪强度的影响更大。
The influence factors of shear strength between layers were studied based on the lower seal coats for the semi-rigid base asphalt pavement.According to the Mohr-Coulomb theory,5 kinds of compound specimens were selected for shearing test to evaluate the influence of asphalt material and aggregate size to shear strength.Based on τ-σ lines and Mohr-Coulomb expressions,the grey correlation model was used to analyze the relationships of asphalt,aggregate and shear strength.The results show that the rubber power modified asphalt and aggregate particles from 5 mm to 10 mm diameters are better seal coat materials;the asphalt material has greater influence on the interlayers shear strength than the aggregate particles.7 tabs,2 figs,9 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第2期34-38,共5页
Journal of Chang’an University(Natural Science Edition)
关键词
道路工程
摩尔-库伦理论
层间抗剪强度
灰色关联性分析
road engineering
Mohr-Coulomb theory
shear strength between interlayers
grey correlation analysis
