CAJ | 학술논문

针对钢桥面铺装早期损坏中热稳定性不足的问题,依据聚合物改性原理,选取了3种改性剂,通过设计正交试验,采用极差分析和综合平分法,研制出了一种钢桥面铺装新材料--复合改性沥青;测试了该胶结料的基本性能,并对其混合料进行了高温车辙、低温弯曲、水稳定性及疲劳试验.结果表明:复合改性沥青的温度敏感性低、抗剪切变形能力强,其混合料的路用性能均得到了明显改善,尤其是高温抗车辙能力提高显著,且经济效益可观,适用于钢桥面铺装.
침대강교면포장조기손배중열은정성불족적문제,의거취합물개성원리,선취료3충개성제,통과설계정교시험,채용겁차분석화종합평분법,연제출료일충강교면포장신재료--복합개성력청;측시료해효결료적기본성능,병대기혼합료진행료고온차철、저온만곡、수은정성급피로시험.결과표명:복합개성력청적온도민감성저、항전절변형능력강,기혼합료적로용성능균득도료명현개선,우기시고온항차철능력제고현저,차경제효익가관,괄용우강교면포장.
To cope with the deficiency of high temperature stability in early damages of steel deck pavement,based on theory of polymer modification,three polymer modifiers were used to develop a new material(compound modified asphalt) for steel deck pavement by designed orthogonal test together with range analysis and synthesis score method.Performances of the compound modified asphalt and its mixture were measured,and the tests such as rutting test,low temperature bending test,water stability test and fatigue test were performed.The result shows that the compound modified asphalt has lower temperature susceptibility and better ability to resist shear deformation.The performance of the mixture was improved remarkably especially the capacity of rutting resistance,and its economic benefit is considerable.Thus the mixture is suitable for steel bridge deck pavement.