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JP2912398B2 |
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JPH11156841A |
To enable the removal of inside frames manually in a relatively narrow space. A form removing apparatus 1 is equipped with a dolly 11 which can move in the extraction direction B1 and various apparatuses which change the shape of inside ...
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JPH11156839A |
To produce Hume pipes resistant to concrete corrosion by sulfur oxidizing bacteria. A corrosion resisting agent 1.2-2.5 in specific gravity which has growth inhibiting effects on sulfur oxidizing bacteria, especially one consisting of a ...
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JPH11156840A |
To obtain a concrete product by centrifugal molding which has good internal compaction properties even at low ambient temperatures. After a concrete composition containing water, a high performance water reducing agent undiluted solution...
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JP2900951B2 |
A method of fabricating a superconducting ceramic pipe including the steps of: melting a ceramic powder having a predetermined composition to form a melt; filling a supporting tube with the melt by a suction caused by a vacuum pressure; ...
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JP2898565B2 |
PURPOSE: To produce a solid matter high in mixing ratio of a coal ash, high in strength, low in dispersion of strength and excellence in dimensional stability to water by mixing a specified coal ash and a calcium compd., forming and subj...
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JP2899472B2 |
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JP2895965B2 |
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JP2897183B2 |
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JPH11129039A |
To fabricate the cylinder unit in a short time and a low cost, wherein a diameter in an axis direction is different and a thickness is practically the same as that of a raw material cylinder. According to the cylinder unit forming method...
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JP2893297B2 |
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JP2888449B2 |
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JP2886082B2 |
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JP2884440B2 |
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JPH1190916A |
To provide a form for manufacturing an obliquely-cut box culvert which can be used even when both of a slant angle and dimensions are varied and shows excellent efficiency on the occasion of manufacturing the obliquely- cut box culvert. ...
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JP2878832B2 |
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JP2879300B2 |
An improved combination (40) counter rotating packerhead and vibrator assembly is provided. A counter rotating packerhead comprising counter rotating roller assemblies (36,37), longbottom assemblies or a combination thereof is disposed d...
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JP2592938Y2 |
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JPH1181557A |
To facilitate installation works by forming the outer periphery of a spacer made of a metal in an arcuate shape, and forming a fitting holding section, to which a main reinforcement or a spiral reinforcement is fitted elastically, at a c...
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JP2873563B2 |
To obtain high-strength concrete having excellent physical properties and uniform wall thickness and smooth surface in the shortest period of time by a method wherein molding through centrifugal rotation, internal vibration and rolling c...
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JPH1177657A |
To manufacture a tube for orienting staple fiber in a circumferential direction. A circumferential orientation imparting unit 18 is provided between an inner surface of a nozzle 12 and a core 15 inserted into the nozzle 12. The unit 18 h...
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JPH1177658A |
To efficiently remove deposits adhered to an inner surface of a cylindrical form and coupling flange surface after releasing from the form. An elevator 11 is arranged at an upper site of a form conveyor 1 for conveying a cylindrical form...
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JPH1171144A |
To obtain a paste-reducing agent for a centrifugal compacting, hardly causing sagging, displacement, slip of the compact compacted under <=30 G centrifugal force, and excellent in shape maintaining properties of the compact, and further ...
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JP2865567B2 |
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JPH1160310A |
To considerably reduce the amt. of slag discharged without lowering the slump of a cement compsn. and the strength of concrete or mortar by specifying the average particle diameter of a fine powdery admixture and/or a fine powdery binder...
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JPH1160312A |
To largely decrease the amt. of whitewash discharged without decreasing the slump of a cement compsn. and the strength of a concrete or mortar by kneading a (high-performance) water reducing agent (component A), cement, water and fine ag...
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JPH1160311A |
To largely decrease the amt. of whitewash discharged without decreasing the slump of cement compsn. and the strength of concrete or mortar by specifying the ratio of the amt. of a cementation accelerator to the amt. of a (high-performanc...
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JPH1158353A |
To obtain a form for centrifugally molding concrete to suppress generation of vibration, noise. In the form for centrifugally molding concrete used by flange- coupling a pair of split forms 1, 2, a gap is formed between ends of the split...
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JPH1158354A |
To obtain a form for centrifugally molding concrete to easily replace a packing with effective sealability. In the form for centrifugally molding concrete used by flange- coupling a pair of split forms 1, 2, a stopper 8 is fixed to insid...
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JPH1142620A |
To provide a novel casting molding method for slurry by which a molded body having uniform density is efficiently molded at short time. A mold 1, into which a slurry S of ceramics is injected, is placed on a turntable 2 and thereafter th...
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JPH1134032A |
To provide a short, slant-cut box culvert form for forming a short, slant-cut box culvert readily, and capable of forming fitting joint parts at both ends in the axial direction. The short box culvert form has an inclined table 1 with an...
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JP2853898B2 |
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JP2850441B2 |
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JP2849628B2 |
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JPH1110615A |
To effectively suppress discharge of cement particles and aggregate fine particles by discharging coagulant from an opening end of a central hole into a central hole of a concrete molding rotating by a centrifugal unit, then sufficiently...
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JP2846937B2 |
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JP2843075B2 |
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JP2843190B2 |
PURPOSE: To enhance production efficiency without lowering the strength of the top and bottom plates of a concrete member by restraining the expansion pressure of expansible concrete within the form by flat casting wherein the concrete m...
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JP2840863B2 |
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JP2842144B2 |
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JPH10337717A |
To provide am opening and closing device for a concrete form capable of easily carrying out the mold opening work for a form with a core. A form 1 is provided with side plate sections 3 and 4 and a core 5 disposed in the side plate secti...
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JP2839324B2 |
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JPH10329125A |
To enable the molding of a hollow part or a groove part of a varying shape using a common core mold when molding a concrete block with the hollow part or the groove part. The core mold 3 is formed of a flexible mat material 10 such as ru...
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JPH10330176A |
To obtain chemical-resistant pipe excellent in liquid-blocking property and having high strength at a low cost, by impregnating and/or covering the inner side of the pipe section formed by cement-based material comprising at least cement...
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JP2832417B2 |
PURPOSE: To provide a centrifugally molded product having an excellent decorativeness, high strength and high denseness even when a decorative aggregate is relatively fragile or has a low strength. CONSTITUTION: A decorative aggregate, s...
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JPH10323817A |
To shorten the length of respective parts, make the stroke of a compression device required in manufacturing parts small, and facilitate its execution by manufacturing the entirety of an insert in a manner being divided into a plurality ...
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JPH10323818A |
To remove a core mold frame readily after curing of hydraulic cement material such as concrete by the use of water soluble paper consisting of a specific blend of paper making water dispersive fiber and water soluble fiber. Core mold fra...
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JP2827808B2 |
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JP2815104B2 |
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JP2815234B2 |
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