To do so, he does not cause surface layer and cement mortar is inconsistent, surface water mud too much, easy to the problem of craze.

这样做，就不致造成表面与里层砂浆配合比不一致，表面水泥浆太多，易于开裂的问题。

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Wet or dry concrete surface, Concrete component surface, Brick, Mortar, Metal various hydration layer surface, Various SBS linoleum surface, Toilet, The basement;

潮湿或干燥的混凝土表面； 混凝土构件表面； 砖石； 砂浆； 金属各种保湿层表面； 各种SBS油毡表面； 卫生间；

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