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覆盖塑料薄膜养护混凝土构件,工艺简单,投资少,见效快。南阳市建预制厂于1982年5月开始采用聚氯乙稀黑色薄膜和透明度好的白色薄膜养护混凝土的试验。把塑料薄膜直接覆盖在构件上,在薄膜的两边用塑料袋子装上干砂压牢密封。试验表明:一般情况下是混合模(下面黑色,上面白色)养护的构件温度高于黑色塑料薄膜的温度;黑色塑料薄膜养护温度高于白色塑料薄膜养护温度;双层
Covering plastic film to protect concrete components has simple process, low investment and quick effect. In May 1982, Nanyang Construction Prefabrication Factory began the test of curing concrete with a black film of polyvinyl chloride and a white film with good transparency. The plastic film was directly overlaid on the components and sealed on both sides of the film with a dry plastic bag filled with dry sand. Tests show that under normal circumstances, the temperature of the components maintained in the mixed mode (below black and white above) is higher than the temperature of the black plastic film; the curing temperature of the black plastic film is higher than the curing temperature of the white plastic film;