Manufacture of precast concrete product
专利汇可以提供Manufacture of precast concrete product专利检索，专利查询，专利分析的服务。并且PURPOSE: To mass-produce precast concrete products each having a smoothly finished surface at low cost in short time by a method wherein self-leveling material slurry is cast over the surface of hot concrete, which is placed in the predetermined form and not yet solidified.
CONSTITUTION: The manufacture method concerned is to manufacture a precast concrete product having smooth surface by casting self-leveling material slurry over the surface of hot concrete, which is placed in the predetermined form and not yet solidified. The favorable self-leveling material is precurable self- leveling material, the base material of which is the composition produced by blending cement, calcium aluminate-based compound and gypsum and further which is mixed with water reducing agent, thickness, anti-foaming agent, reaction controlling agent, admixture and aggregate in combination. As the calcium aluminate-based compound, 3CaO.3Al
2 O
3 .CaSO
4 or 12CaO.7Al
2 O
3 is used singly or in combination. The favorable content of the calcium aluminate-based compound in the precurable self-leveling material is 50wt.% or more in total amount.
COPYRIGHT: (C)1989,JPO&Japio，下面是Manufacture of precast concrete product专利的具体信息内容。
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