高黏高弹沥青混凝土在柔性桥面施工中的应用

Application of High-viscosity and High-elasticity Asphalt Concrete in the Construction of Flexible Bridge Deck

为解决改性沥青混合料SMA-13作为刚性桥面层黏结性不强、弹性恢复不足等常见质量通病,从沥青、碎石等原材料的选择着手,总结出黏结基面处理要求、黏结层做法、混合料摊铺等几个关键控制点,制定了相应的解决办法并予以实施,解决了柔性桥面沥青混凝土摊铺出现的质量问题。

SMA-13,as a rigid bridge deck,has common quality problems such as weak adhesion and insufficient elastic recovery.In order to solve these problems,starting with the selection of raw materials such as asphalt and crushed stone during construction,this paper summarizes several key points,such as treatment requirements and practices of adhesive level and mixture pavement,and the countermeasures are elaborated and conducted so as to solve the common quality problems of asphalt concrete pavement on the flexible bridge deck.