上海长江大桥复合改性沥青SMA桥面铺装施工质量控制

上海长江大桥气候环境恶劣,而且为减轻钢桥自重桥面沥青铺装设计厚度4cm。为保证桥面铺装路用性能和耐久性,采用了80%SBS改性沥青与20%特立尼达湖沥青配置而成的TLA-SBS复合改性沥青SMA13混合料。详细介绍了本工程中TAL-SBS复合改性沥青及其SMA混合料技术标准、配合比设计和生产配合比验证、摊铺平整度控制技术、碾压工艺及其质量控制的要点。验收检测数据表明上述施工工艺满足工程要求,开放交通一年多路面质量完好,行车舒适。

TLA-SBS composite modified asphalt pavement construction quality control on Shanghai Yangtze River Bridge

Shanghai Yangtze River Bridge,in severe climate condition,only designed 4cm deck pavement to reduce bridge self-weight. In order to secure deck pavement performance and durability,it used TAL-SBS composite modified asphalt SMA13 mixture,which was mixed by 80%SBS modified asphalt and 20%Trinidad Lake Asphalt.This paper presented TAL-SBS composite modified asphalt and its mixture's technical standard,mixture design and production mixture validation,paving evenness control technique,rolling process,and their k...