ACCELERATOR SLURRYING APPARATUS AND QUICK SETTING CONCRETE SPRAYING METHOD

• Main Authors: KOSUGE KEIICHI, TERAJIMA ISAO, MUROKAWA TAKAMITSU
• Format: Patent
• Language: English
• Published: 19.11.2009
• Subjects: ARTIFICIAL STONE; BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; EARTH DRILLING; FIXED CONSTRUCTIONS; FORMS; GALLERIES; HANDLING BUILDING MATERIALS ON THE SITE; LARGE UNDERGROUND CHAMBERS; LIME, MAGNESIA; METALLURGY; MINING; REFRACTORIES; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHAFTS; SHUTTERING; SLAG; TREATMENT OF NATURAL STONE; TUNNELS

PROBLEM TO BE SOLVED: To provide a quick setting concrete spraying method improving a dust reducing effect. SOLUTION: This accelerator slurrying apparatus comprises: a supply pipe for force-feeding a powder accelerator by air; a supply pipe for force-feeding added water in a mist state by air; and a discharge pipe for accelerator slurry in which the powder accelerator and mist are mixed. The accelerator slurrying apparatus comprises a structure in which two supply pipes and the discharge pipe are connected and the mist is pressed in from a clearance to continuously manufacture accelerator slurry, and a mist force-feed pipe for force-feeding the mist of added water by air from a position 1-20 m behind the structure to the supply pipe C, wherein (the inner diameter of the supply pipe of the power accelerator)/(the inner diameter of the discharge pipe for the accelerator slurry) is 0.3-0.95. A spraying method comprises adding the accelerator slurry manufactured by the accelerator slurry apparatus, into concrete to form quick setting concrete, and spraying the quick setting concrete from a nozzle. COPYRIGHT: (C)2010,JPO&INPIT