掺AJF-6型高效引气减水剂机场混凝土的抗冻性能试验研究  

Study on Frost Resistance of Airport Concrete Mixing AJF-6 Efficiency Air-entraining Water-reducing Agent

作　　者：梁峰[1] 孙晓波[1] 李永毅[1] 潘志峰[2] 李勇[2] 

机构地区：[1]中国航空港建设第八工程总队,辽宁沈阳110021 [2]空军勤务学院,江苏徐州221000

出　　处：《公路工程》2013年第1期184-186,207,共4页Highway Engineering

摘　　要：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%。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.

关 键 词：AJF—6高效引气减水剂 混凝土 冻融循环 抗冻性能 

分 类 号：U416.216[交通运输工程—道路与铁道工程]