The research of silicone rubber sealant for road joint

Silicone rubber is acknowledged to show perfect properties, such as weather resistance, nontoxic, tearing strength over a broad temperature region, high durable and so on. The silicone rubber in this study was used as a joint material in the road joint. The preparation and the mechanism of the silicone rubber were introduced. The mechanical properties of the silicone rubber were characterized by tensile testing and the chemical resistance was discussed in the acid, alkaline, and salt solutions for six months. The results exhibited that the silicone rubber shows good adhesive properties with the concrete slab and no failure was observed in the interface between the silicone rubber and concrete slab in the chemical solutions for six months. It is indicated that the silicone rubber meets the performance requirements of joint materials well.