| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Lightweight cellular concrete | JP19384292 | 1992-07-21 | JP3234290B2 | 2001-12-04 | 雄一 土井; 博憲 寺田 |
| 242 | Foundation treatment method of porous inorganic material | JP26678092 | 1992-09-10 | JP3201660B2 | 2001-08-27 | 好治 中川; 俊雄 加賀爪; 健二 宮川; 航平 峯 |
| 243 | Frost inorganic material | JP27773193 | 1993-10-08 | JP2708702B2 | 1998-02-04 | 美明 三井; 敏明 住田; 篤 末吉 |
| 244 | Cement composition for air-entraining composition | JP52646395 | 1995-04-11 | JPH09511977A | 1997-12-02 | ヘッジ，ティモシー |
| (57)【要約】 セメント組成物に関する組成物と方法が提供される。 セメント組成物中へ空気を連行するためのロジンとタンニンの配合物の使用法が提供される。 ロジンとタンニンの重量比１０:１〜１:１０の配合物を湿式セメント組成物にセメント重量に基づいて１重量％よりも少量添加して空気とセメントを混合させる。 このようにして得られるセメントは例えば５〜１０容量％の空気を含有しており、これによって硬化セメントの凍結損壊に対する耐性が改良される。 該配合物を用いてセメント組成物へ空気を連行する方法も提供される。 | ||||||
| 245 | Production of inorganic cement board | JP3645196 | 1996-02-23 | JPH09227197A | 1997-09-02 | KUBO MASAAKI |
| PROBLEM TO BE SOLVED: To provide a production process for inorganic cement boards which can improve the dispersibility of raw materials and increase the strength of inorganic cement boards. SOLUTION: Raw materials mainly comprising cement, aggregates, reinforcing fiber materials are mixed with water enough to harden the cement and they are dispersed to prepare an inorganic powdery material. This powdery material is press-molded in a mold frame, cured and hardened to produce the objective inorganic cement board. In this process, the inorganic powdery material is prepared by allowing the water for hardening to previously adhere to the fiber component for reinforcing fibers or to the particles of lightweight aggregates in the form of ice and mixing and dispersing them in other raw materials in an atmosphere lower than 0 deg.C. Then, the ice adhering to the reinforcing fiber material is fused when the inorganic powdery material is press-molded. | ||||||
| 246 | Concrete composition | JP14138792 | 1992-06-02 | JP2635884B2 | 1997-07-30 | TAKESHITA HARUYUKI; SAWARA SEIYA; HOSHINO SHOHEI; SHOJI YOSHUKI |
| 247 | Aqueous suspension of silica and of aluminum sulphate or of alum, process for preparation and use of the suspension | JP11405496 | 1996-04-02 | JPH08333111A | 1996-12-17 | PRAT EVELYNE; FROUIN LAURENT |
| PROBLEM TO BE SOLVED: To obtain an aqueous suspension of silica, aluminum sulphate or alum which has a specific pH value and a specific solid content, which is in the form of a gel after a specific period at rest, and which has an excellent storage stability as the gel is reversible under low shear. SOLUTION: Precipitation silica with the CTAB specific surface area of 140-200 m 2/g and the median diameter after decoagulation of 2.5 μm or less is produced by adding/agitating an acidification agent such as sulfuric acid to an Na 2SiO 3 aqueous solution with the concn. of about 100 g/l or less mixed with an appropriate quantity of an electrolyte such as Na 2So 4 till the pH becomes 4-6.5, collecting the cake by filtering the produced precipitation, then adding NaAlO 2 and drying after decoagulation by ultrasonic waves. Next, a prescribed amount of a solution containing an aluminum compound selected from aluminum sulphate, basic aluminum sulphate, alum and a mixture thereof, is added to the aqueous suspension of the produced precipitation silica and agitated. Then, the aqueous suspension of silica and the aluminum compound, which has a pH lower than 4, a solid content of 10-50% by weight, which is in the form of a gel after 48 hours at rest and is reversible under low shear, is prepared. COPYRIGHT: (C)1996,JPO | ||||||
| 248 | Cement-based lightweight artificial stone and a method of manufacturing the same | JP32940691 | 1991-10-14 | JPH0811715B2 | 1996-02-07 | 昭 小島; 俊彦 浅田 |
| 249 | High fluidity concrete | JP6228594 | 1994-03-31 | JPH07267715A | 1995-10-17 | SASAGE TAKEAKI; YAMAKAWA TSUTOMU |
| PURPOSE: To provide a concrete excellent in fluidity and material separation resistance, free from being affected by the kind of a fine aggregate and having excellent freezing damage resistance. CONSTITUTION: The concrete is obtained by adding an admixture into ≤400kg hydraulic powdery material, aggregate and water per 1m 3 concrete. The admixture contains each component of (A) one or more kinds of an admixture selected from AE agent, and a water-reducing, an AE water-reducing, a high performance water-reducing and an AE high performance water-reducing admixtures, (B) a separation reducing agent for concrete showing 50-10000cp viscosity in the state of 1% aq. solutions and (C) a swelling low-substitutive hydroxypropyl cellulose, which has ≤100μm average particle diameter (50wt.%) and is soluble incompletely in water. (Wherein, the total weight of (B) and (C) is 0.2-1.0kg per 1m 3 concrete and the weight ratio, (B)/(C) is 95/5 to 50/50). COPYRIGHT: (C)1995,JPO | ||||||
| 250 | Concrete composition resistant to separation in water | JP30381693 | 1993-12-03 | JPH07206505A | 1995-08-08 | SAKAI KOJI; WATANABE HIROSHI |
| PURPOSE:To improve the separation resistance of components of a concrete composition by compounding a water-soluble cellulose ether, hollow microspheres and a defoamant. CONSTITUTION:This concrete composition resistant to separation in water can be produced by weighing respective specific amounts of cement, aggregate and water, weighing about 0.1-5wt.% (based on water) of one or more kinds of nonionic cellulose ester having a 1% aqueous solution viscosity of 1,000-50,000cP such as hydroxyethylcellulose and hydroxypropylmethylcellulose, about 0.1-5.0wt.% (based on the cement) of hollow microspheres of a polymer such as PS having a diameter of about <=200mum, especially <=507mum, about 0.02-0.5 pts.wt. (based on 1.0 pt.wt. of the water-soluble cellulose ether) of a defoamant such as tributyl phosphate and about 1-5wt.% (based on the cement) of a high-performance water-reducing agent composed of an isoprene compound, etc., and kneading these weighed components with a pan-type mixer, etc. | ||||||
| 251 | Inorganic material having frost-damage resistance | JP27773193 | 1993-10-08 | JPH07109164A | 1995-04-25 | MITSUI YOSHIAKI; SUMITA TOSHIAKI; SUEYOSHI ATSUSHI |
| PURPOSE: To obtain a porous inorganic material satisfying frost-damage resistance and simultaneously satisfying sound-absorbing, water penetrating and heat-insulating properties. CONSTITUTION: The objective inorganic material having frost-damage resistance has continuous holes of 0.2-2000μm in diameter of the empty hole and bulk specific gravity of 0.5-0.9. It is a board of ≤25mm in thickness or this board having either one of a rising wall of ≤25mm in thickness, a square column having a cross section of ≤25mm in diagonal, a circular column of ≤25mm in diameter and a peripheral wall of ≤25mm in thickness rising from the periphery of the board. Or, it is a material having plural holes which open on one plane and uniformly distribute with a space between each other. The minimum distance between the centers of any pair of holes is ≤25mm, the minimum distance between the closest outer wall and the center of each hole is ≤25 and the thickness of the bottom of the hole is ≤25mm. COPYRIGHT: (C)1995,JPO | ||||||
| 252 | Inorganic board and method for coating inorganic board | JP35832992 | 1992-12-25 | JPH06191968A | 1994-07-12 | ENOMOTO TAKAYUKI |
| PURPOSE: To obtain a film excellent in freezing damage resistance even if there is water absorption from the butt end or back surface in spite of coating of only the surface in coating the surface of an inorganic board. CONSTITUTION: The surface of an inorganic board consisting essentially of cement is coated with an inorganic coating. In the process, this method is composed of a step for coating the surface of the inorganic board with a moisture-curing type urethane resin, then applying a primer thereon and subsequently coating the applied primer with the inorganic coating. Thereby, the surface of the inorganic board is reinforced with the moisture-curing type urethane resin and water absorptivity is simultaneously suppressed. COPYRIGHT: (C)1994,JPO&Japio | ||||||
| 253 | Ground treatment of porous inorganic material | JP26678092 | 1992-09-10 | JPH0692756A | 1994-04-05 | MIYAGAWA KENJI; NAKAGAWA KOJI; MINE KOHEI; KAGATSUME TOSHIO |
| PURPOSE:To strengthen a surface layer, to prevent air pollution and to improve the adhesiveness, etc., of a face coated film by applying the ground treating agent which is made by diluting emulsifiable hydrophilic group containing isocyanate prepolymer with water on a porous inorg. material. CONSTITUTION:Polyisocyanate such as hexamethylene diisocyanate polymer is allowed to react with the surfactant such as polyethyleneglycolether and the emulsifiable hydrophilic group-containing isocyanate prepolymer is produced. Then, 50-700 pts.wt. water is added to the 100 pts.wt. emulsifiable hydrophilic group-containing isocyanate prepolymer and the ground treating agent is produced. After adding water to the ground treating agent, it is applied on the porous inorg. material (e.g. non-asbestos slate) within 8hr. By applying the ground treating agent, the workability in coating of the porous inorg. material is improved, and resistance to frost and melting, etc., of the face coated film is improved. | ||||||
| 254 | Lightweight aerated concrete | JP19384292 | 1992-07-21 | JPH0640780A | 1994-02-15 | DOI YUICHI; TERADA HIRONORI |
| PURPOSE:To improve freezing resistance, durability and workability by specifying a prescribed average air bubble diameter, gas permeability and specific gravity. CONSTITUTION:A mixture is obtained by adding a foaming agent such as water and metal aluminum or foams produced by a surfactant into main raw materials of a calcareous raw material such as quick lime, cement and a siliceous raw material such as silica rock. The mixture is poured into a forming flask, is hardened and is formed by cutting or the like to obtain a forming body. By aging the forming body in a saturated steam of about 10atm to grow crystals of calcium silicate, the lightweight aerated concrete having >=0.1mm to <0.4mm average air bubble diameter, >=1X10<-6>cm<3>/sec<2> to <5X10<-5>cm<3>/sec<2> gas permeability and >=0.4 t <0.7 specific gravity is produced. | ||||||
| 255 | JPH06500372A - | JP51348891 | 1991-08-09 | JPH06500372A | 1994-01-13 | |
| 256 | Method for improving resistance of concrete to freezing damage | JP14864392 | 1992-05-16 | JPH05319885A | 1993-12-03 | KAKIZAKI MASAYOSHI; ABE YASUHIKO |
| PURPOSE:To improve the resistance of concrete to freezing damage by adding an AE agent consisting of a modified rosin oxide surfactant to the unsolidified concrete contg. water-soluble cellulose ether. CONSTITUTION:About 290-450kg of normal Portland cement and about 180+ or -5kg of water are contained per m<3> of concrete composition, and the composition further contains about 0.01-0.6wt.%, based on the cement binder, of a water-soluble cellulose ether and 0.5-6.0wt.% of a high-performance water reducing agent. An AE agent consisting of a modified rosin oxide surfactant is added by 0.0001-0.05wt.%, based on the cement binder. The viscosity of a 1% aq. soln. of the cellulose ether is controlled to 100-10,000cP (centipoise). Consequently, the air content of the concrete is kept at 3-6%, and excellent freezing damage resistance is imparted to the concrete. | ||||||
| 257 | Cement-based lightweight artificial stone and its production | JP32940691 | 1991-10-14 | JPH05105491A | 1993-04-27 | KOJIMA AKIRA; ASADA TOSHIHIKO |
| PURPOSE: To provide an artificial stone lightweight and excellent in mechanical strength and also to contrive utilization of industrial waste by molding the mixture of fine aggregate incorporating lightweight aggregate and fine powder of fiber reinforced plastic, cement and water and thereafter performing underwater curing and high-temperature curing. CONSTITUTION: Cement is mixed with fine aggregate incorporating at least both of lightweight aggregate such as pumiceous sand balloon and fine powder of fiber reinforced plastic. Then, prescribed amount of water is added to this mixture and introduced into a frame mold. The molded body is released fro the frame mold and then cured. Thereafter it is heated to perform high- temperature curing and thereby the aimed lightweight artificial stone is obtained. This artificial stone is constituted of cement and fine aggregate. Fine aggregate incorporates at least both lightweight aggregate such as pumiceous sand balloon and fine powder of fiber reinforced plastic and has the following physical properties. In other words, the artificial stone has mechanical properties of 0.6-1.0g/cm 3 bulk density, ≥27kg/cm 2 flexural strength and ≥140kg/cm 2 compression strength and holds durability of 30 times or more for freezing and thawing. COPYRIGHT: (C)1993,JPO&Japio | ||||||
| 258 | Low temperature acryl latex composition and method of structure waterproofness | JP4291091 | 1991-02-15 | JPH04214754A | 1992-08-05 | JIEIMUZU MAIKERU GEIDEISU; ROBAATO ARAN UIASHINSUKI; SUUZAN GEIRU EERURITSUHI |
| PURPOSE: To provide an aq. waterproof pretreatment agent compsn. capable of being preserved or used even if the circumferential temp. lowers to 25 °F or lower. CONSTITUTION: A compsn. contains about 10-65 wt.% of a latex solid such as butyl acrylate, about 4-33 wt.% of a coagulation point falling agent such as ethylene glycol and about 17-80 wt.% of water and is useful as a waterproof pretreatment agent at 25 °F or lower. COPYRIGHT: (C)1992,JPO | ||||||
| 259 | Admixing agent and method for accelelating set of concrete in cold | JP23269387 | 1987-09-18 | JPS6389445A | 1988-04-20 | JIYON DABURIYU BURUTSUKU |
| 260 | A POZZOLAN FOR USE IN A CEMENT COMPOSITION HAVING A LOW HEAT OF HYDRATION | EP14794958 | 2014-02-07 | EP3105301A4 | 2017-12-06 | RAVI KRISHNA M; PATIL RAHUL C; PATIL SANDIP P; JOSEPH TRISSA; DUFFY MARCUS |
| A method of cementing in a subterranean formation comprises: introducing a cement composition into a wellbore penetrating the subterranean formation, wherein at least a portion of the subterranean formation has a temperature less than or equal to the freezing point of an aqueous liquid, and wherein the cement composition comprises: (A) cement; (B) water; and (C) a pozzolan, wherein the cement composition has a heat of hydration of less than 50 BTU per pound; and causing or allowing the cement composition to set in the wellbore after the step of introducing. The pozzolan can have a calcium oxide concentration of less than 15% by weight of the pozzolan, and the pozzolan can have a concentration of at least 15% by weight of the cement. Gas hydrates can be present in or adjacent to a portion of the well. | ||||||
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