POSISEAL PS#1 allows entrapped water vapors to escape because the vapor molecule is significantly smaller. This vapor transmission is necessary if the substrate is to survive many freeze/thaw cycles.

 
  • 1允许蒸汽分子的溢出,因为蒸汽分子十分细小。如果混凝土处于冻融环境中,则蒸汽分子的溢出非常必要。
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