Abstract: A waterproof structure which does not require use of fixing tools, suppresses swelling and is easily installed. A waterproof structure provided with a waterproof sheet, which is laid on a part of a target region of a foundation that is a flat site, and a waterproof coating film, which is formed on at least a part of a peripheral region. The waterproof sheet has a resin sheet containing a poly(vinyl chloride)-based resin and an adhesive layer which is provided on one side of the resin sheet and which is bonded to the foundation. The adhesive layer is provided on a partial region of the resin sheet. The waterproof coating film contains a polyurethane-based resin and is provided so as to be in contact with the resin sheet on at least a surface of a rim part of the waterproof sheet.

Abstract: A urethane composition is disclosed for a coating film waterproof material which does not contain any of specific chemical substances, has work efficiency that is the same as that of a general-purpose highly extensible urethane coating film waterproof material, an elongation rate of a highly extensible urethane coating film waterproof material, and strength of a high-strength urethane coating film waterproof material, has no decrease in weather resistance of a top coat resulting from a plasticizer, and is suitable for a non-bleeding type of coating by hand that is not affected by migration of a low fraction of asphalt.

Abstract: An asphalt-urethane composition is disclosed which does not contain any of specific chemical substances, has adhesiveness to mineral-surfaced asphalt roofing and an asphalt groundwork, exhibits performance in temporary waterproofing with respect to the asphalt groundwork, performs adhesion of sand to the surface layer of the mineral-surfaced asphalt roofing and adjustment of irregularity, has adhesiveness of integrating with a urethane waterproof layer applied thereon, has excellent workability, construction efficiency, water resistance, and hot water resistance, has high strength and elasticity, has low temperature sensitivity, and has excellent finish properties. The asphalt-urethane composition can contain at least a component (A) obtained by adding an MDI prepolymer generated by reacting polyolefin polyol having two or more hydroxyl groups, short-chain polyhydric alcohol, and a monomer of MDI, a monomer of MDI, and a solvent a; and a component (B) including asphalt, a catalyst, and a solvent b.

Abstract: An underlay cushioning sheet that is arranged on the surface of a foundation and that has a waterproof coating film formed thereon. The underlay cushioning sheet includes a cushioning layer having an overlay surface and a curing acceleration layer having a coating film formation surface on the opposite side from the overlay surface. A waterproof coating film including a polyurethane resin is formed on the coating film formation surface of the curing acceleration layer by applying a one pack-type liquid waterproofing material. The curing acceleration layer includes a reactive material capable of reacting with the liquid waterproofing material. The reactive material either (1) includes a functional group capable of reacting with an isocyanate included in the liquid waterproofing material or (2) reacts with a latent curing agent included in the liquid waterproofing material and generates a functional group capable of reacting with the components of the liquid waterproofing material.

Abstract: A one-component type polyurethane resin composition for preventing detachment of concrete pieces and tiles containing an isocyanate group-containing urethane prepolymer (A) and a thixotropy-imparting agent (B), and a method for forming a reinforcing layer on a surface of a concrete structure or tiled wall containing a resin coated film composed thereof, in order to provide a one-component type polyurethane resin composition for preventing detachment of concrete pieces and tiles, which has improved workability by being able to be applied with a trowel or brush, forms a transparent resin coated film after reactive curing that has improved weather resistance without applying a top coat, facilitates diagnosis of deterioration of concrete by being carried out visually during maintenance of concrete structures, is able to maintain the existing appearance of the tiled exteriors of buildings and other structures and eliminates dispersion to surrounding areas during application.

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: A urethane composition is disclosed for a coating film waterproof material which does not contain any of specific chemical substances, has work efficiency that is the same as that of a general-purpose highly extensible urethane coating film waterproof material, an elongation rate of a highly extensible urethane coating film waterproof material, and strength of a high-strength urethane coating film waterproof material, has no decrease in weather resistance of a top coat resulting from a plasticizer, and is suitable for a non-bleeding type of coating by hand that is not affected by migration of a low fraction of asphalt.

Abstract: An asphalt-urethane composition is disclosed which does not contain any of specific chemical substances, has adhesiveness to mineral-surfaced asphalt roofing and an asphalt groundwork, exhibits performance in temporary waterproofing with respect to the asphalt groundwork, performs adhesion of sand to the surface layer of the mineral-surfaced asphalt roofing and adjustment of irregularity, has adhesiveness of integrating with a urethane waterproof layer applied thereon, has excellent workability, construction efficiency, water resistance, and hot water resistance, has high strength and elasticity, has low temperature sensitivity, and has excellent finish properties. The asphalt-urethane composition can contain at least a component (A) obtained by adding an MDI prepolymer generated by reacting polyolefin polyol having two or more hydroxyl groups, short-chain polyhydric alcohol, and a monomer of MDI, a monomer of MDI, and a solvent a; and a component (B) including asphalt, a catalyst, and a solvent b.

Abstract: A method for waterproofing a substrate, the method including adhering an adhesive member obtained by using an active hydrogen-containing synthetic resin, to a urethane-based waterproof layer to laminate a pavement adhesive layer; applying or spraying an isocyanate group-containing compound onto the pavement adhesive layer; and paving an asphalt mixture on the surface of the pavement adhesive layer.

Abstract: The spray gun is provided with a nozzle section which mixes gas into raw material liquid and also ejects the raw material liquid. The internal space of the nozzle section has an introduction path into which the raw material liquid is introduced, an open portion in which a flow path is enlarged more than the introduction path, thereby ejecting the raw material liquid in a fine particle form, a reduced diameter portion in which a flow path is made narrower than the open portion, thereby re-aggregating the raw material liquid in a fine particle form, and an ejection orifice portion which ejects the raw material liquid to the outside. In the nozzle section, a gas introduction hole which introduces gas into a base-end-side portion of the open portion is formed.

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.

Abstract: A method for waterproofing a substrate, the method including adhering an adhesive member obtained by using an active hydrogen-containing synthetic resin, to a urethane-based waterproof layer to laminate a pavement adhesive layer; applying or spraying an isocyanate group-containing compound onto the pavement adhesive layer; and paving an asphalt mixture on the surface of the pavement adhesive layer.

Abstract: The spray gun is provided with a nozzle section which mixes gas into raw material liquid and also ejects the raw material liquid. The internal space of the nozzle section has an introduction path into which the raw material liquid is introduced, an open portion in which a flow path is enlarged more than the introduction path, thereby ejecting the raw material liquid in a fine particle form, a reduced diameter portion in which a flow path is made narrower than the open portion, thereby re-aggregating the raw material liquid in a fine particle form, and an ejection orifice portion which ejects the raw material liquid to the outside. In the nozzle section, a gas introduction hole which introduces gas into a base-end-side portion of the open portion is formed.

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.

Abstract: A one-component type polyurethane resin composition for preventing detachment of concrete pieces and tiles containing an isocyanate group-containing urethane prepolymer (A) and a thixotropy-imparting agent (B), and a method for forming a reinforcing layer on a surface of a concrete structure or tiled wall containing a resin coated film composed thereof, in order to provide a one-component type polyurethane resin composition for preventing detachment of concrete pieces and tiles, which has improved workability by being able to be applied with a trowel or brush, forms a transparent resin coated film after reactive curing that has improved weather resistance without applying a top coat, facilitates diagnosis of deterioration of concrete by being carried out visually during maintenance of concrete structures, is able to maintain the existing appearance of the tiled exteriors of buildings and other structures and eliminates dispersion to surrounding areas during application.

Abstract: A coating agent for hand painting application obtained by a urethane resin composition obtained by allowing a main agent (A) and a curing agent (B) to react. The main agent (A) containing: an isocyanate group-terminated prepolymer (b) having diphenylmethane diisocyanate bound to the termini of a polyol component (a) containing a long chain polyol (e) which contains at least a polyhydroxy functional product such as a trihydroxy or higher-hydroxy functional product and having a molecular weight of 200 or greater; and unbound diphenylmethane diisocyanate(c). The curing agent (B) containing: a crosslinking agent (g) obtained by a short chain polyol (f) having a molecular weight of less than 200; and a long chain polyol (h) having a molecular weight of 200 or greater.

Abstract: A coating composition which is excellent in crack resistance, alkali resistance and solvent resistance while having a high hardness and which is excellent in recoatability, anti-graffiti property, and removability of graffiti is provided.

Abstract: On a roadbed layer (4) is formed a cushion layer (5) of 50 mm to 200 mm in thickness which is formed by using elastic chips alone or in mixture with sand, each elastic chip being formed of elastic material and having a size of 7 mm to 0.05 mm, preferably 2 mm to 0.5 mm and a specific gravity of 1.8 to 3.5. The cushion layer (5) contains elastic chips of 3 wt % or more. The elastic chips are formed by mixing a material selected from the group consisting of synthetic rubber, natural rubber and synthetic resin with a specific gravity adjusting material of inorganic powder having a specific gravity of 3 or more.