【作者】 黄俊强；

【导师】 陈仕周；

【作者基本信息】 重庆交通大学 ， 道路与铁道工程， 2008， 硕士

【摘要】 近年来,随着我国公路建设的迅猛发展,对道路的使用功能也提出了越来越高的要求。如何使路面既有足够的耐久性又具有良好的表面功能(防滑、防水漂、抑制溅水起雾、减少眩光、降低噪音)是当前困惑我国公路界的一大难题。大孔隙排水性沥青路面,因其良好的表面排水、抗滑及降噪功能,日益受到重视。然而目前普通改性沥青的排水性沥青混合料,虽然通过改性后混合料的综合性能都得到了提高,但提高的幅度都很小,从已有的实体工程来看,主要还是路面的耐久性差强人意,出现了早期损害和水损害,表现为剥落、早期松散、甚至是推移、车辙。特别对于山区公路长上坡路段、匝道转弯路段、城市道路交叉口、公共汽车停靠站等,这些特殊路段最易产生车辙及推拥病害,如何使这类特殊路段同时具有足够的抗滑性能、强度和耐久性已经成为公路界公认的大难题。本文以排水性环氧改性沥青混合料为研究对象,研究其级配组成、混合料设计及路用性能,以期能对我国排水性路面的研究工作及推广使用提供一些有价值的探索性研究成果。本文首先分析排水性沥青混合料空隙率的影响因素,通过均匀设计方法设计试验,对混合料的空隙率与各主要筛孔孔径的通过率之间的关系进行回归,得到了各主要筛孔孔径的通过率与混合料空隙率的响应关系,找出影响混合料空隙率的关键因素。在此基础上,进一步确定了排水性环氧改性沥青混合料的合理级配。之后,通过各种混合料常规的结构性能测试,与其它两种排水性沥青混合料的路用性能试验验证比较,证明了排水性环氧改性沥青混合料既具有良好耐久性和强度性能,又具有优越表面抗滑、排水降噪和防腐蚀等功能。更多还原

【Abstract】 With the rapid development of the road construction in China in recent years,the requirements to roads’ function become more and more strict.It is a big problem for the road constructers to keep the roads perform well both in durability and surface function (skid resistance, water fog resistance, dazzling reduction and noise reduction). As a result, porous asphalt pavement, with the good surface function of drainage, skid resistance and noise reduction, is being emphasized gradually.In this paper the gradation,mixture design and performance of the porous asphalt mixture are researched with the aim to provide some valuable results to the research and application of the porousasphalt pavement in China.Firstly the factors influencing the porous asphalt mixture’s air void were analyzed in this paper.Based on the uniform design and plenty of laboratory tests, the relation-- ship between the air void of the porous asphalt mixture and the passing ratios of main sieve sizes was regressed,and the main factors at influences the mixture’s air void was found. And then, the reasonable gradation of the porous asphalt mixture was recommended according to the aimed range of the air voids.The, The mixture through a variety of conventional performance testing, and compared with other two porous asphalt mixture,to prove that the porous epoxy-modified asphalt mixture is not only a good durability and strength of performance, but also has superior anti-sliding surface, drainage, reduced noise and anti-corrosion capabilities.更多还原