Study On The Performance Of Waterproof-Bonding Layer Of Concrete Bridge Deck Pavements

In recent years, with the rapid development of our country highway traffic, the bridge as important component of the road is also increasing along with it. But, many bridge deck pavements displaying certain early damages, such as track, traction, crack, pothole, directly influences vehicles' normal operation and causes the normal maintenance time to be ahead greatly of the bridge deck. Investigating its reason, the great reason is the improper choice and combination of waterproof-bonding material and lacking of the reasonable quality detection and the performance test methods. So it is very necessary and urgent to research on the waterproof-bonding layer.This paper depends on the project"Research on Pivotal Technical for Concrete Bridge Deck Pavements."which is cooperated by Chongqing municipal science technique committee. Through the comparative investigation of early damage forms and reason analysis to concrete bridge deck pavements in West China, based on it, the author studies the basic road performance and the infiltration performance of waterproof-bonding layer. Through indoor shear test, pull test and infiltration test which test equipments are studied, designed and processed by ourselves, roundly appraise to shear strength, bond strength and water resistance performance of choosed typical waterproof-bonding material, synthetically analysis influencing factors to performance index. By experiment and analysis of economic and social benefit, technical performance of the waterproof-bonding materials which combined of rubber asphalt sand gel, solventborne adhesive and epoxy resin is best which is adapt to be used in important bridge. This paper makes remarkable sense to provide instruction for enhancing bridge paving technologies and have the high practical application value.