Interface Bonding Properties between Nonwater Reaction Polyurethane Polymer Materials and Concrete

Table 5

Dry condition.

Number	Density ρ/(g/cm^3)	Soaking time (h)	Temperature (°C)	Ave. moisture content (%)	Bond strength (MPa)	Reduction rate (%)
1–3	0.6	0	0	—	0.48	57.1
4–6	0.6	0	5	—	0.49	56.3
7–9	0.6	0	10	—	0.57	49.1
10–12	0.6	0	15	—	0.63	43.8