高性能引气道面混凝土应用研究

针对我国寒冷地区机场道面混凝土的耐久性不良现象，通过研究含气量对道面混凝土工作性、抗折强度、抗冻性能及耐磨性能的影响规律，采用复掺引气剂和减水剂的技术途径，配制出了维勃稠度15～30S，28天抗折强度5.8MPa以上、抗冻性及耐磨性等耐久性优良的高性能道面混凝土，并提出了寒冷地区道面混凝土最大水灰比为0.45、最小水泥用量为280kg/m3、含气量为3%～5%较合理。

Application Study of High-performance Air-entrained Pavement Concrete

Against the poor durability of airport pavement concrete in cold regions in China, through studying the influence of air content on the concrete workability, flexural strength, frost resistance and wear resistance, the high-performance pavement concrete with Weibo consistency of 15 ~ 30 S, flexural strength more than 5.8MPa for 28 days, and excellent frost resistance and wear resistance has been prepared using air-entraining agent and water-reducing agent. Then it is put forward that the maximum water-cement ratio of 0. 45, minimum amount of cement of 280 kg,,/m3 and air content of 3 % -5 % are more reasonable for pavement concrete applied in cold regions.