机场道面再生混凝土的耐久性  

Durability of Recycled Concrete for Airport Pavement

作　　者：刘庆涛[1] 吴和胜[2] 岑国平[1] 陈福年[2] 黄庆国[2] 吴永根[1] 朱志远[3] 

机构地区：[1]空军工程大学工程学院,西安市710038 [2]空军第六空防工程处,衡阳市421001 [3]兰州军区空军后勤部,兰州市730020

出　　处：《公路》2011年第7期39-43,共5页Highway

基　　金：空军后勤科研基金;项目编号KH0706014

摘　　要：为了配制满足机场道面工程设计与施工要求的再生混凝土,采用掺加优质粉煤灰和高效外加剂的＂双掺＂技术路线,进行了机场道面再生混凝土的抗冻性、抗渗性和耐磨性试验研究。抗冻性试验采用快冻法,抗渗性试验采用静水压力法和氯离子渗透法,耐磨性试验采用滚珠轴承法。结果表明：所配制的道面再生混凝土耐久性能优于普通道面混凝土,能够满足机场道面要求,抗冻等级高达F250,较普通道面混凝土提高了200%以上,可以满足严寒地区道面混凝土抗冻要求,建议寒冷地区道面再生混凝土的含气量指标为5%~6%,比天然骨料混凝土高1%;道面再生混凝土抗渗静水压力抗渗等级较普通道面混凝土提高了300%以上;道面再生混凝土耐磨性较普通混凝土提高了18%~36%。In order to make recycled concrete that can meet the design and construction requirements of airport pavement project,the＂double mixing＂technique with high quality fly ash and high efficiency admixture is adopted,the frost resistances,impermeabilities and abrasion resistances of the recycled concrete are tested in laboratory.Fast freeze-thaw method is used in frost resistance test,hydrostatic pressure method and chloride penetration method are used in impermeability test,and ball bearing method is used in abrasion resistance test.The results show that the durability of the recycled concrete for airport pavement is superior to the normal pavement concrete,can meet the requirements of airport pavement,the frost resistance grade is up to F250,increases by more than 200% compared with normal pavement concrete,can fulfil the requirement of pavement in the very chilly area,and it suggests that the air capacity of the recycled concrete for pavement in the chilly area is 5%~6%,which is higher than 1% that of the normal pavement concrete;The impermeability grade by hydrostatic pressure method of the recycled concrete for pavement increases by more than 300% compared with normal pavement concrete;The abrasion resistances of the recycled concrete for pavement increases by 18%~36% compared with normal pavement concrete.

关 键 词：机场道面 再生混凝土 试验研究 耐久性 抗冻性 抗渗性 耐磨性 

分 类 号：TU528.37[建筑科学—建筑技术科学] V351.11[航空宇航科学与技术—人机与环境工程]