IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0539442
(1975-01-08)
|
우선권정보 |
JP-0113522 (1972-11-14) |
발명자
/ 주소 |
- Suzuki Yoshinori (Tokyo JPX) Asayama Akihiko (Kawasaki JPX) Dohi Fumio (Tokyo JPX) Takahashi Takaharu (Tokyo JPX) Toyomoto Isao (Hiratsuka JPX)
|
출원인 / 주소 |
- Kowa Chemical Industry Ltd. (JPX 03)
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인용정보 |
피인용 횟수 :
13 인용 특허 :
0 |
초록
▼
A decorative coating layer, unified with the succulent and fragile surface of a concrete board, is formed by a method comprising laminating an inorganic and hydraulic coating material on the surface of an unhardened concrete board placed in a mold, and immediately thereafter heat-curing the thus coa
A decorative coating layer, unified with the succulent and fragile surface of a concrete board, is formed by a method comprising laminating an inorganic and hydraulic coating material on the surface of an unhardened concrete board placed in a mold, and immediately thereafter heat-curing the thus coated concrete board. According to this method, beautifully dressed precast concrete boards can be mass-produced by a shortened process with improved efficiency of operation.
대표청구항
▼
Method of forming a decorative coating on the surface of precast concrete board which comprises: pouring a concrete mixture consisting essentially of cement, aggregate and water into a mold, smoothing the surface of the resulting unhardened concrete, spraying an hydraulic coating material on the unh
Method of forming a decorative coating on the surface of precast concrete board which comprises: pouring a concrete mixture consisting essentially of cement, aggregate and water into a mold, smoothing the surface of the resulting unhardened concrete, spraying an hydraulic coating material on the unhardened concrete having a good workability in the same mold at a coating density from about 4 to about 6 kg/m2, and immediately thereafter heat-curing the so-coated concrete at a temperature between about 20°C and about 90°C for from about 3 to about 5 hours, said hydraulic coating material consisting essentially of a coating composition whose viscosity is between about 5,000 and 50,000 cps. and which is composed of (a) 100 parts by weight of Portland cement, (b) from about 2 to about 20 parts by weight of curing agent composition consisting essentially of at least one inorganic salt selected from the group consisting of alkali metal carbonate, alkaline earth metal carbonate, alkali metal chloride, alkaline earth metal chloride, and alkali metal silicate, and (c) an effective quantity of at least one additive selected from the group consisting of water proofing agent, cement dispersing agent, defoaming agent, crack-preventing agent, aggregate, coloring pigment and pigment-dispersing agent. Method of forming a concrete coating on the surface of precast concrete board which comprises placing unhardened concrete consisting essentially of cement, aggregate and water in a mold, spraying a hydraulic coating material on the unhardened concrete in said mold at a coating density of from about 4 to about 6 kg/m2, immediately thereafter heat-curing the so-coated concrete at a temperature between about 20°C and about 90°C for from about 3 to 5 hours, said hydraulic coating material consisting essentially of a coating composition whose viscosity is between about 5000 and 50,000 cps, and which is composed of (a) 100 parts by weight of Portland cement, (b) from about 2 to about 20 parts by weight of curing agent composition, said curing agent composition consisting essentially of at least one inorganic salt selected fRom the group consisting of alkali metal carbonate, alkaine earth metal carbonate, alkali metal chloride, alkaline earth metal chloride, and alkali metal silicate, and (c) an effective quantity of at least one additive selected from the group consisting of water proofing agent, cement dispersing agent, defoaming agent, crack-preventing agent, aggregate, coloring pigment and pigment-dispersing agent.
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