BLASTING RESISTANT HIGH STRENGTH CONCRETE AND METHOD OF MANUFACTURING BLASTING RESISTANT HIGH STRENGTH CONCRETE
PROBLEM TO BE SOLVED: To provide blasting resistant high strength concrete which is not required to cover its surface with heat insulating material or the like, has little fear of a deterioration in and ununiformity of strength and of the lowering of fluidity when placed into molds and can be placed...
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| creator | HASUO KOICHI HANADA TOSHIO NISHIMOTO YOSHIKATSU YAMADA MASAHIRO YOSHIOKA MASAHIRO ISHIKAWA SHINSUKE YUTANI TAKAO ISHIHARA SEIICHIRO TERADA KENICHI |
| description | PROBLEM TO BE SOLVED: To provide blasting resistant high strength concrete which is not required to cover its surface with heat insulating material or the like, has little fear of a deterioration in and ununiformity of strength and of the lowering of fluidity when placed into molds and can be placed into molds with a process similar to the conventional placement process. SOLUTION: When the blasting resistant high strength concrete 1 is exposed to high temperature environment by fire or the like, organic powder 2 is heated to reach the melting point and melted to reduce the volume to form gaps 4 in parts occupied by the organic powder 2. The rupture is prevented by reducing the volume of the organic powder 2 and forming many discontinuous independent gaps 4 to uniformly disperse in the blasting resistant high strength concrete. The organic powder 2 consists of polypropylene (PP) of an organic compound processed into a particle having 10-200 μm particle diameter. COPYRIGHT: (C)2004,JPO |
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SOLUTION: When the blasting resistant high strength concrete 1 is exposed to high temperature environment by fire or the like, organic powder 2 is heated to reach the melting point and melted to reduce the volume to form gaps 4 in parts occupied by the organic powder 2. The rupture is prevented by reducing the volume of the organic powder 2 and forming many discontinuous independent gaps 4 to uniformly disperse in the blasting resistant high strength concrete. The organic powder 2 consists of polypropylene (PP) of an organic compound processed into a particle having 10-200 μm particle diameter. 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SOLUTION: When the blasting resistant high strength concrete 1 is exposed to high temperature environment by fire or the like, organic powder 2 is heated to reach the melting point and melted to reduce the volume to form gaps 4 in parts occupied by the organic powder 2. The rupture is prevented by reducing the volume of the organic powder 2 and forming many discontinuous independent gaps 4 to uniformly disperse in the blasting resistant high strength concrete. The organic powder 2 consists of polypropylene (PP) of an organic compound processed into a particle having 10-200 μm particle diameter. 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SOLUTION: When the blasting resistant high strength concrete 1 is exposed to high temperature environment by fire or the like, organic powder 2 is heated to reach the melting point and melted to reduce the volume to form gaps 4 in parts occupied by the organic powder 2. The rupture is prevented by reducing the volume of the organic powder 2 and forming many discontinuous independent gaps 4 to uniformly disperse in the blasting resistant high strength concrete. The organic powder 2 consists of polypropylene (PP) of an organic compound processed into a particle having 10-200 μm particle diameter. COPYRIGHT: (C)2004,JPO</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE BUILDING CEILINGS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS LIME, MAGNESIA METALLURGY REFRACTORIES ROOFS SLAG TREATMENT OF NATURAL STONE WALLS, e.g. PARTITIONS |
| title | BLASTING RESISTANT HIGH STRENGTH CONCRETE AND METHOD OF MANUFACTURING BLASTING RESISTANT HIGH STRENGTH CONCRETE |
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