快速修补材料研发及在水泥混凝土桥面修补中的应用  

Research and Development of Multi-Functional Repair Kit and Application in Concrete Bridge Deck Repair

作　　者：孙杨勇[1,2] 曹一翔[1] 尹昌宇[1] 周柏瑾 

机构地区：[1]广东省建筑科学研究院,广州市510500 [2]华南理工大学土木与交通学院,广州市510000

出　　处：《公路》2015年第6期218-223,共6页Highway

摘　　要：为改进路面快速修补工艺,自主研发了一种强度高、耐腐蚀、固化快的树脂类胶黏剂,将该胶黏剂与耐磨集料混合形成快速修补材料（Multi-functional Repair Kit,简称MRK）。采用马歇尔设计方法对MRK进行配合比设计,得到最佳级配和最佳胶石比为1∶8。对MRK进行车辙试验、抗压试验和弯拉试验,结果显示MRK的高温浸水车辙动稳定度高达21 300次/mm,7d抗压强度为43.1 MPa,抗弯拉强度为11.8 MPa,显著大于水泥混凝土。将MRK应用于广深高速公路广氮立交桥的水泥混凝土桥面修补,施工简单快捷并且养护3-4h即可开放交通。室内试验及工程应用表明,MRK具有黏结强度高、稳定性和耐久性好、可快速开放交通的特点,能满足水泥混凝土桥面破损快速修补的要求。In order to improve rapid repair technology for pavement, a high intensity, corrosion- resistant and rapid cure epoxy resin adhesive has been developed. Multi-functional repair kit （MRK） is made from epoxy resin adhesive and wear-resistance aggregate. Mix proportion design of MRK is made according to Marshall Method, through which obtains the optimum gradation and best binder/aggregate ratio being 1：8. Rutting test, compression test and flexural-tensile test are conducted to MRK. The results show that high temperature soaking dynamic stability reaches 21300 nos./mm, the 7 day compressive strength is 43.1MPa and flexural strength is 11.8MPa, significantly larger than cement concrete. MRK has been applied in repair of concrete bridge deck for the Guangdan Bridge on Guangzhou-Shenzhen Expressway. The construction of MRK is simple and rapid, and the traffic can be open only after 3 4hours＇ curing. Laboratory test and engineering application indicate that MRK has the characteristics of high bonding strength, good stability and durability, and short disturb duration to traffic, which can meet the reouirements of quick repair of concrete bridge deck.

关 键 词：快速修补 改性环氧树脂 马歇尔设计方法 水泥混凝土桥面 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]