This paper introduces the selec- tion of modified asphalt used in asphalt mortar pad based upon studies on modified asphalt in different formula- tions and the requirements in application function and construction performance.
沥青砂胶缓冲层在钢桥面铺装体系中起着重要作用。
According to the requirements and through the performance study on asphalt,asphalt mixture and the combined pavement structures,this paper solves the problems such as modified asphalt,optimum asphalt amount and ideal thickness of asphalt mortar pad.
沥青砂胶缓冲层在双层SMA钢桥面铺装体系中起着重要的作用。
Through anti shearing strength test and comparison among different binding material and anti-shearing strength test of rubber asphalt sand gel on surface of concrete,it is proven that it has high anti-shearing strength on concrete surface,and because of strong accommodation of its process to bridge deck leveln.
橡胶沥青砂胶是西部交通科技项目“桥面铺装材料与技术研究”在混凝土桥面铺装方面的一项研究成果。
With the aid of the (Charge- Coupled Device) CCD camera to acquire the digital informations for erect section of specimens, then utilizing the compacting parameters of compaction particle principal axis direction, asphalt mastics film thickness and particle area ratio etc.
针对沥青混合料试件压实成型方式不同因而内部结构各异的情况,采用图像数字处理技术,借助于CCD(电荷耦合器件)相机获取试件立断面的数字化信息,提出利用颗粒主轴方向、沥青砂胶膜厚及颗粒面积比等压实参数,直观、快速而准确地评价不同成型方法的压实效果,在此基础上,选择了马歇尔击实、轮碾压实、振动压实和旋转压实四种方法进行研究,并对比分析了实际路面结构。
Tropism properties of particles are used to describe stability and distributing properties of particles to depicting compactness, evaluating parameters of coarse particle in principal axis direction, asphalt mastics film thickness and particle area are used to e-valuate the compacting characteristics.
针对旋转压实法,利用不同压实功作用成型试件模拟压实过程,采用数字图像处理技术,研究沥青混合料的压实成型特性,提出了以集料颗粒的取向特性描述沥青混合料的稳定性,以集料颗粒的分布特性来反映混合料的密实程度,定义了集料颗粒主轴方向、沥青砂胶膜厚及颗粒面积比等参数来进行评价。