Study on the Performance of Secondary (Step) Curing Epoxy Resin Adhesive Layer

Abstract

Abstract The waterproof bonding layer is between the bridge deck and the asphalt pavement, and its performance is very important to ensure the quality of the entire pavement system In this paper, the tension strength, elongation at break and thermosetting index are used to comprehensively judge the optimal ratio of A and B components of high temperature epoxy in the adhesive layer, and the characterization of secondary (step) current performance is explored The epoxy resin adhesive layer is analyzed and verified in the 60 ° C curing environment The best construction time corresponding to different application amounts is determined On this basis, the optimal amount of waterproof adhesive layer and adhesive layer is determined, and its performance is verified The results show that the optimal ratio of high temperature epoxy resin in adaptive layer A: B is 10: 9, the curing time at 60 ° C is 5 hours, and the validity period is about 3 hours The optimal amount of adhesive layer between mixture layers is about 0.60 kg/m2, and the optimal amount of adhesive layer between steel plate and mixture is about 0.42 kg/m2 The adaptive layer has good low temperature crack resistance and can be applied to low temperature areas in the north