Investigation on the Effect of Butyl Acrylate (nBA) to Improve the Toughness Properties of Methacrylate-Based Waterproofing Adhesive Material (MMA) for the Steel Bridge Deck

Table 4

Pull-off/shear test results of “poly(MMA-r-nBA)/MMA + asphalt mixture” composite structure at different temperatures.

Temperature (°C)	Composite strtucre	Average tensile strength (MPa)	Failure mode	Average shear strength (MPa)	Failure mode
25	poly(MMA-r-nBA)+GA	0.75	Adhesive failure	0.35	Adhesive failure
	poly(MMA-r-nBA)+EA	0.16	Adhesive failure	0.38	Adhesive failure
	MMA + GA	0.9	Adhesive failure	0.7	Adhesive failure
	MMA + EA	0.02	Adhesive failure	0.03	Adhesive failure
60	poly(MMA-r-nBA)+GA	0.14	Adhesive failure	0.13	Asphalt mixture cracking
	poly(MMA-r-nBA)+EA	0.06	Adhesive failure	0.09	Adhesive failure
	MMA + GA	0.15	Adhesive failure	0.14	Adhesive failure
	MMA + EA	0.00	Adhesive failure	0.00	Adhesive failure