Abstract: A method for slope improvement including layering a life-extending layer on the surface of a protective layer made from mortar or concrete sprayed onto a slope in order to prevent rain water or the like from entering cracks in the protective layer, inhibit degradation of the protective layer, and prevent mortar pieces or concrete pieces from spalling off the protective layer, the method for slope improvement being characterized in that the life-extending layer is formed by a coating layer that has a crack conformability of 0.8 mm or larger and has salt-blocking properties and neutralization-preventing properties.

Abstract: An interlayer adhesive which is interposed between a waterproof layer formed from a resin-coated film and an inorganic material layer using mortar or concrete to adhere the waterproof layer and the inorganic material layer to each other, the interlayer adhesive containing a resin composition obtained by reacting (a) a base resin including an emulsion of a main resin containing at least one of an acrylic-based resin, an ethylene-vinyl acetate-based resin, and an epoxy-based resin, with (b) an isocyanate compound having an isocyanate group.