Combining an airport construction project in Daxing' anling, do 0, 50, 100, 150, 200, 250, 300 freeze-thaw cycles test on concrete mixing different proportions AJF-6 efficiency air-entraining water-reducing agent with fast freeze-thaw test method. Measure and compare concrete specimens' relative dynamic elastic modulus with the DT-12 dynamic elastic modulus instrument to research influence of AJF-6 efficiency air-entraining water-reducing agent on concrete' s frost resistance. The results indicate that AJF-6 efficiency air-entraining water-reducing agent can improve frost resistance of concrete and that the relationship between its content and air content in concrete seems to be a parabola. For ensuring air content in concrete meeting criterion, its content should be between 2. 3% and 3.0% and its practical content should be 3.0% more than the design value at the construction field.%结合大兴安岭某机场建设工程,采用快速冻融试验方法,对掺入不同比例AJF-6高效引气减水剂的混凝土分别进行0、50、100、150、200、250、300次冻融循环试验,测量试件的含气量、质量、相对动弹性模量,并对比研究AJF-6高效引气减水剂对混凝土抗冻性能的影响.试验结果表明AJF-6高效引气减水剂掺量与混凝土含气量关系近似为抛物线关系.为控制混凝土含气量符合要求,其掺量应控制在2.3％ ～3.0％之间,施工过程中AJF-6高效引气减水剂掺量宜比设计值增加3.0％.
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