1. The document investigates the physical properties, compressive behavior, and bonding strength of a hydrophilic polyurethane grout. 2. Tests found that the water-to-grout ratio and volume change during curing influence the grout's pressure-temperature relationships, compressive stress-strain behavior, and tensile bonding strength. 3. The compressive stress-strain behavior of cured grouts was found to be non-linear and inelastic, and affected by the initial water-to-grout ratio and volume change during curing.