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SPRAYING MATERIAL, QUICK-SETTING SPRAY CONCRETE, AND SPRAY WORKING USING THE SPRAYING MATERIAL
SPRAYING MATERIAL, QUICK-SETTING SPRAY CONCRETE, AND SPRAY WORKING USING THE SPRAYING MATERIAL
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机译:喷涂材料,快速设定的喷涂混凝土以及使用喷涂材料进行喷涂工作
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PROBLEM TO BE SOLVED: To obtain concrete having excellent quick-setting disposition and developing high mechanical strength by including a quick setting material with calcium aluminate glass and aluminum sulfate as active ingredients and cement containing a specific amount or greater of SO3 component. ;SOLUTION: The subject spraying material, 100 pts.wt. in total, comprises 3-15 pts.wt. of a quick-setting material comprising 100 pts.wt. of calcium aluminate glass and 10-30 pts.wt. of aluminum sulfate calculated as anhydride having a Blaine value of 3,000-9,000 cm2/g, respectively, as two active ingredients, and also ≤0.75 wt.% of an alkali metal component calculated as Na2O, and cement containing ≥3 wt.% of SO3 component such as Portland cement; besides, if needed, the above spraying material may be incorporated with 100-300 pts.wt., based on 100 wt.% of the cement, of aggregate such as silica sand, and additive(s) such as a setting regulator, AE agent, water reducing agent and/or fluidizing agent; wherein, the calcium aluminate glass is a kind of glass containing 35-55 wt.% of CaO, which is produced by quenching and vitrifying a melt formed at a temperature of as high as 1,200-1,700°C by mixing a calcia stock with an alumina stock.;COPYRIGHT: (C)1999,JPO
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