Experimental Study on High Performance Micro surfacing

Abstract:

Micro surfacing is widely used as an effective technology of preventive maintenance. However, for high temperature and rainfall in Guangdong region, micro surfacing has many disadvantages, such as poor abrasion resistance and short life ,which seriously influence the application of preventive maintenance in Guangdong province. Therefore, this study developes a new type of micro surfacing technology—epoxy high performance micro surfacing. The core of the new type of micro surfacing is adding an appropriate proportion water based epoxy resin and waterborne epoxy curing agent in micro surfacing mixture.water based epoxy resin and waterborne epoxy curing agent have chemical reaction ,which form high performance bonding network structure of space. Indoor wet wheel wear test results show that anti wear and resistance to water damage of epoxy high performance micro surfacing improves about 60%, compared with conventional micro surfacing. Based on driving wheel pavement analyzer, the indoor accelerated test on epoxy high performance micro surfacing showes that the anti sliding and anti spalling performance of epoxy high performance micro surfacing is significantly superior to conventional micro surfacing.