BOX CULVERT

PROBLEM TO BE SOLVED: To provide a box culvert capable of reducing occurrence of a noise in a vibration compaction molding of the culvert using an intermediate flowing concrete and containing a little surface bubbles. SOLUTION: The box culvert comprises the intermediate flowing concrete. In this cul...

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Bibliographische Detailangaben
Hauptverfasser:	OTAKE JUNICHIRO, SHIMOYAMA YOSHIHIDE
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CESSPOOLS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FIXED CONSTRUCTIONS LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS REFRACTORIES SEWERAGE SEWERS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TRANSPORTING TREATMENT OF NATURAL STONE WATER SUPPLY WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a box culvert capable of reducing occurrence of a noise in a vibration compaction molding of the culvert using an intermediate flowing concrete and containing a little surface bubbles. SOLUTION: The box culvert comprises the intermediate flowing concrete. In this culvert, the placing speed of the concrete into a form is 10 to 90 cm/min. The concrete is vibration compacted at the acceleration of the vibration of 10 to 70 m/sec at the surface of the form.