丁卫宏

【摘 要】沥青路面是我国公路与城市道路的主要路面结构，随着国民经济的快速发展，交通密度和重型车辆日益增多。与此同时，在超载、气候变暖、行车速度提高的综合影响下，路面行车荷载呈现高温、高荷载、高动水平力的三高趋势，沥青路面水毁、高低温永久变形等路面早期变形破坏较大面积的出现在近年通车的高等级公路上。因此如何经济、环保地解决路面早期破坏，已成为亟待解决的问题。废旧轮胎橡胶粉改性沥青是采用一定细度的废旧轮胎橡胶粉在高温状态下与基质沥青发生融胀反应所形成胶粉改性沥青，胶粉改性沥青与一定级配的碎石材料拌和成胶粉沥青混合料铺筑的路面即为胶粉沥青混凝土路面，它具有抗老化、抗反射裂缝、低噪声、平整舒适、抗滑等优点。通过本人在国道G104五河淮河特大桥及接线工程路面施工的体会，总结废旧轮胎橡胶粉改性沥青路面施工经验，为从事路面施工的同仁们提供参考。

【关键词】胶粉改性沥沥青;沥青混凝土路面早期破坏;胶粉改性沥青路面的施工

Study on Application of Rubber Powder Modified Asphalt Pavement Construction

Jing Wei-hong

（Xinjiang Beixin Road and Bridge Group Co.， Ltd Urumqi Xinjiang 830011）

【Abstract】Asphalt pavement is the main road structure of highway and urban road in our country. Along with the rapid development of national economy， traffic density and heavy vehicle are increasing day by day. At the same time， under the influence of overload， climate warming and driving speed increase， road traffic load presents three trends， such as high temperature， high load and high dynamic force， asphalt pavement water damage， high and low temperature permanent deformation The destruction of a larger area in the recent opening of the high-grade highways. Therefore， how to solve the road surface damage in an economical and environmental way has become an urgent problem to be solved. Waste tire rubber powder modified asphalt is a certain degree of waste tire rubber powder at high temperature and the matrix asphalt swelling reaction formed by the formation of powder modified asphalt， rubber powder modified asphalt and a certain grading material mixing grading Asphalt powder mixture into the pavement that is rubber powder asphalt concrete pavement， it has anti-aging， anti-reflective cracks， low noise， smooth and comfortable， anti-skid and so on. Through the experience of the construction of G104 Wuhe Huaihe Bridge and the connection project of the national road， this paper summarizes the construction experience of waste tire rubber powder modified asphalt pavement， and provides reference for the colleagues engaged in pavement construction.

【Key words】Early modification of bituminous concrete pavement;Construction of modified asphalt pavement with rubber powder

1. 膠粉沥改性青混凝土配合比设计及特性

1.1 胶粉沥青混凝土配合比设计。

胶粉改性沥青是将废旧轮胎加工成细粉颗粒，以大于15%的比例掺合到沥青中去，再加入改性剂或其他聚合物而得到的路用胶凝材料。GTM设计方法：美国工程兵旋转压实剪切试验即（GYRATORY TETING MACHINE，简称GTM）作为一种理论研究和工程兵实际应用的工具，是由美国工程兵为解决轰炸机跑道容易破损的问题专门研究发明的。……