PREVENTIVE METHOD FOR CRACK IN MASS CONCRETE

PURPOSE:To alleviate tensile stress generated near the surface when the mass concrete cures, and to prevent the crack of the mass concrete by forming a ditch to the surface before the mass concrete cures. CONSTITUTION:The ditches 2 having approximately one-fifts depth of the thickness of the mass co...

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Bibliographische Detailangaben
1. Verfasser:	ONO SADAMU
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES CEILINGS EARTH DRILLING EMBANKMENTS EXCAVATIONS FENCING FIXED CONSTRUCTIONS FLOORS FOUNDATIONS GALLERIES GENERAL BUILDING CONSTRUCTIONS HYDRAULIC ENGINEERING INSULATION OR OTHER PROTECTION OF BUILDINGS LARGE UNDERGROUND CHAMBERS MASTS MINING ROOFS SHAFTS SOIL SHIFTING SWIMMING OR SPLASH BATHS OR POOLS TENTS OR CANOPIES, IN GENERAL TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	PURPOSE:To alleviate tensile stress generated near the surface when the mass concrete cures, and to prevent the crack of the mass concrete by forming a ditch to the surface before the mass concrete cures. CONSTITUTION:The ditches 2 having approximately one-fifts depth of the thickness of the mass concrete are shaped to the surface of the mass concrete 1 before the mass concrete cures. Since the surface of the concrete 1 is divided by the ditches 2, a section in the vicinity of the surface of the concrete is deformed in response to tensile stress, tensile force is alleviated as shown in symbols A1, and cracks are not generated near the surface of the concrete.