专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH11217251A REPAIR OF CRACK OF CONCRETE 失效
公开(公告)号：JPH11217251A
公开(公告)日：1999-08-10
申请号：JP1848098
申请日：1998-01-30
申请人： OHBAYASHI CORP
发明人： SAITO YUJI
IPC分类号： E04G23/02 , C04B28/02 , C04B41/60
摘要： PROBLEM TO BE SOLVED: To provide a concrete with crack repairing functions. SOLUTION: A concrete is obtained by suitably compounding a cement C with an aggregate (a coarse aggregate G or a fine aggregate S), water and various admixtures A, then charging the resultant composition into a stirrer, kneading the composition and subsequently placing the kneaded material in a formwork, etc. At this time, the coarse aggregate G or fine aggregate S or both are replaced by a clinker (a), which is regulated to a particle size distribution of the replaced aggregate. The clinker (a) having a large particle size distribution scarcely contributes to hydrating reaction and intactly remains even when the concrete is hardened according to the hydrating reaction of the cement by replacing the aggregate (the coarse aggregate G or fine aggregate S) with the clinker (a). Each crack (b) is caused in the hardened concrete and water permeates through the crack (b). When the water is brought into contact with the remaining clinker (a), the hydrating reaction of mineral components of the clinker (a) is reinitiated to deposit a hydrating reactional product (c) in the crack (b) to fill the crack (b).

2. 发明专利

JPH1019880A METHOD FOR EXAMINING HYDRATED TEXTURE OF CONCRETE OR MORTAR 失效
公开(公告)号：JPH1019880A
公开(公告)日：1998-01-23
申请号：JP17141696
申请日：1996-07-01
申请人： OHBAYASHI CORP
发明人： SAITO YUJI , TAJIMA TAKATOSHI
IPC分类号： G01N33/38 , G01N27/26
摘要： PROBLEM TO BE SOLVED: To perform the measuring of the distribution and the thickness of the transition band of the calcium hydroxide of hydrated texture of concrete and mortar in a stage that hydration has proceeded by eluting ions of calcium from the hydrated texture. SOLUTION: Ions of calcium are eluted from the hydrated texture of concrete or mortar containing calcium hydroxide(CH) to observe the distribution and the transition band of CH in hydrated texture by an electronic microscope. In other words, concrete or mortar, which is an object under test, is submerged in an electrolyte to provide a pair of electrodes. A DC current is impressed on these electrodes to elude ions of calcium from the hydrated texture of concrete or mortar. As calcium ions of CH of highly solubility are first eluted and removed from the hydrated texture, the spot of the hydrated texture after the CH is eluted out becomes porous. Thereby the spot at which CH had been present is easily discriminated by an electronic microscope to make it easy to examine the distributional state of CH in the hydrated texture.

3. 发明专利

JPH09110557A WET FINISHING OF CONCRETE BODY 失效
公开(公告)号：JPH09110557A
公开(公告)日：1997-04-28
申请号：JP26710995
申请日：1995-10-16
申请人： DAICEL CHEM , SCHOKBETON JAPAN CO LTD , OHBAYASHI CORP
发明人： HIROTA NOBUCHIKA , INAMURA NAOKI , ASAHINA TOSHIYUKI , KAWAHARA MASAO , KAWACHI TAKESHI , HAYASHI YOSHIMASA , OGAWA HARUKA , MITANI KAZUFUSA , SAITO YUJI
IPC分类号： C04B41/63 , C04B41/48
摘要： PROBLEM TO BE SOLVED: To attain high adhesivity and obtain a tough finished surface by mixing a penetrative crystal-growing agent into a polymer dispersion to be applied to a concrete surface or to the surface of a mortar setting bed applied to a concrete surface. SOLUTION: The surface of a concrete body 1 shown in the figure (a) is coated with a primer 10 produced by using SBR, epoxy, ethylene-vinyl acetate or acrylic polymer dispersion as a base, mixing the base with a proper amount of a penetrative crystal-growing agent having a concrete deterioration suppressing function and containing a reactive component such as water glass, silica or magnesium silicofluoride and dispersing microfibers consisting of artificial or natural fibers such as cellulose fiber, aramid fiber, acrylic fiber or hemp. A raised layer 12 is formed on the produced primer layer 10. A mortar setting bed 2 shown in the figure (b) and applied to the raised layer can be integrated to the concrete body 1 by the bonding effect. As an alternative, a tile 4 is set with the tile-setting mortar 3 to form a tiled exterior face.

4. 发明专利

JPH0748188A HIGHLY DURABLE CONCRETE 失效
公开(公告)号：JPH0748188A
公开(公告)日：1995-02-21
申请号：JP19240293
申请日：1993-08-03
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , SAITO YUJI
IPC分类号： C04B41/69 , C04B41/52 , C04B41/71 , C09D127/12
摘要： PURPOSE:To enable the maintenance-free properties by remarkably improving the durability of a facing concrete panel. CONSTITUTION:This highly durable concrete is constructed by applying a titanium vapor deposition thin film 2 to the surface of a concrete panel 1, coating or spraying a fluororesin coating 3 which is a finishing material thereon and further protecting the surface thereof with the titanium vapor deposition thin film 4.

5. 发明专利

JPH06144957A TREATMENT OF CONCRETE SURFACE 失效
公开(公告)号：JPH06144957A
公开(公告)日：1994-05-24
申请号：JP29743492
申请日：1992-11-06
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , SAITO YUJI
IPC分类号： B01J19/08 , B28B11/04 , C04B41/50 , C04B41/66
摘要： PURPOSE:To improve the durability of concrete by treating the concrete surface. CONSTITUTION:Concrete is dipped in an aq. soln. 2 contg. fluorine to apply a DC potential gradient between the soln. 2 and the concrete to convert the concrete surface into a CaF2 layer. Consequently, the concrete surface is treated with a simple device without need for a special vessel since a poisonous substance is not used, and the durability of the concrete is remarkably improved.

6. 发明专利

JPH0558701A PRODUCTION OF MORTAR CONCRETE 失效
公开(公告)号：JPH0558701A
公开(公告)日：1993-03-09
申请号：JP24652291
申请日：1991-09-02
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , KUBOTA SHOGO , SAITO YUJI , ICHINOSE KENICHI
IPC分类号： C04B14/06 , C04B18/14 , C04B24/00 , C04B28/02
摘要： PURPOSE:To provide a production method of a high strength mortar concrete by forming an aggregate suitable to produce a super high strength mortar concrete and by making the blending condition rational. CONSTITUTION:The aggregate is essentially formed from quartz or feldspar. The aggregate has >=2.58 specific gravity, >=90 Shore hardness and >= 2000kgf/ cm compressive strength as physical properties. As for the blending condition of the aggregate, ratio of water to a binding material is 25%, 5-20% per weight of a cement of a silica fume containing >=90% SiO2 is added as an admixture and a high performance AE water reducing agent is used as a water reducing agent.

7. 发明专利

JPH04107255A PRECAST CONCRETE CURTAIN WALL 失效
公开(公告)号：JPH04107255A
公开(公告)日：1992-04-08
申请号：JP22514790
申请日：1990-08-29
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , NAGAO SATOHIRO , AOYAMA MIKI , HAYASHI YOSHIMASA , OGAWA HARUKA , KIDA DAIZO , SAITO YUJI
IPC分类号： E04B2/94 , C23C4/18 , E04B2/88 , E04C2/04
摘要： PURPOSE:To protect a concrete surface in the inner part and to reduce the covering depth with respect to a reinforcing bar by forming a sprayed deposit of metal or ceramics on the surface of a precast concrete curtain wall. CONSTITUTION:A sprayed deposit of metal or ceramics is formed on the surface of a precast concrete curtain wall by using a thermal spray gun. The concrete surface part of the precast concrete curtain wall can be protected by the above sprayed deposit. Further, by polishing the surface of the above sprayed deposit after the completion of thermal spraying, excellent bright surface can be obtained and also a denser film can be obtained. By this method, a curtain wall having a texture equal to that of a metallic curtain wall can be formed, and further, even in the case of an inexpensively produced precast concrete curtain wall, its commercial value can remarkably be increased.

8. 发明专利

JPH0484763A METHOD FOR TESTING RESISTANCE OF CEMENT HARDENING BODY 失效
公开(公告)号：JPH0484763A
公开(公告)日：1992-03-18
申请号：JP19760490
申请日：1990-07-27
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , SAITO YUJI
IPC分类号： G01N33/38
摘要： PURPOSE:To test a resistance of a cement putting a concentration of an erosion solution in a state near a real condition with shortening a measuring time by making the negative ions infinitesimally included, which change the cement hardening body in the chemical properties. CONSTITUTION:Calcium ions included in a cement hardening body X are attracted to a negative electrode 4 to be dissolved into a electrolyte of a vessel 2 side because of a voltage applied between a pair of electrodes 3 and 4 where the hardening body X is set up between electrodes 3 and 4 applied a D.C. volt age. On the other hand, negative ions of sulphuric acid ions, etc. included in the electrolyte of the vessel 2 are attracted to an positive electrode 3, percolate inside the hardening body X and change the hardening body X to a more soluble substance. The degrees of calcium ion dissolving and negative ion percolating at this time are proportioned nearly to the D.C. voltage between the electrodes 3 and 4. Therefore, the chemical resistance of the hardening body can be judged by measuring an amount of the dissolved calcium ions and analyzing the area of negative ion percolating in the hardening body X after setting up the harden ing body X in the electrolyte in the fixed time.

9. 发明专利

JPH06128723A SURFACE TREATMENT OF PC PRODUCT 失效
公开(公告)号：JPH06128723A
公开(公告)日：1994-05-10
申请号：JP28030792
申请日：1992-10-19
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , SAITO YUJI , ICHINOSE KENICHI
IPC分类号： C23C14/02 , C04B41/51 , C04B41/52 , C23C14/14 , C23C14/18
摘要： PURPOSE:To develop a PC product free of maintenance for a long time by surface-treating the base concrete of a PC product in a specified manner and then forming a Ti coating film. CONSTITUTION:Concrete is placed in a formwork to form a PC slab 10. In this case, the placed concrete is cured in an autoclave to increase the strength of the cured base concrete itself, then the base concrete is released from the formwork, and the base concrete is surface-treated with an SiO2-base material. A Ti coating film 12 is then formed in 0.1-1.0mum thickness by vapor deposition or ion sputtering. Consequently, the adhesion between the base concrete and the Ti coating film is increased, and a PC product excellent in durability due to the Ti coating film and decorativeness due to metallic luster and free of maintenance for a long time is obtained.

10. 发明专利

JPH0558688A PLACING OF MORTAL-CONCRETE 失效
公开(公告)号：JPH0558688A
公开(公告)日：1993-03-09
申请号：JP24652191
申请日：1991-09-02
申请人： OHBAYASHI CORP
发明人： NAKANE ATSUSHI , KUBOTA SHOGO , SAITO YUJI , ICHINOSE KENICHI
IPC分类号： C04B14/02 , C04B14/30 , C04B20/00 , C04B28/04 , C04B111/20
摘要： PURPOSE:To improve the workability in the placing of an ultrahigh strength mortar-concrete by adjusting the particle size distribution of the aggregate. CONSTITUTION:Aggregate composed mainly of corundum (alpha-Al2O3) is processed to round the corner of the particle to attain a percentage of absolute volume of >=60% and the particle size distribution of the aggregate is adjusted to pass 25-40% of the aggregate through a 0.6mm sieve, 7-15% through a 0.3mm sieve and

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式