西北高寒干燥地区的碾压混凝土工程，由于引气困难，导致其抗冻耐久性得不到保证。
Freezeproof durability of roll compacted concrete engineering in northwest cold and dry areas can not be guaranteed because entrainment of air is difficult.
作为评价混凝土抗冻性的参数之一，混凝土气泡间距系数越来越受到重视。
ABSTRACT: Being a parameter of concrete antifreeze evaluation, air void spacing factor had got much more attention.
适用范围：应用于地上、地下高强度的混凝土工程及抗冻、抗渗、耐磨性要求的混凝土工程。
Applicable scope: overground and underground high stringent concrete project. And anti - freeze, impervious, abrasion resistant concrete project.
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