中南大学学报（自然科学版）2012，Vol.43Issue(8)：3263-3269,7.
机场道面再生混凝土的性能与应用
Properties and applications of recycled concrete for airport pavement
摘要
Abstract
The "double mixing" technique with high quality fly ash and high efficiency admixture was adopted. The strength, the frost resistances, impermeabilities and abrasion resistances of the recycled concrete for airport pavement were tested in laboratory, and then the recycled concrete was applied in field. The mechanism of the pavement recycled concrete's properties was studied through analyzing it's microstructure. The results show that the properties of the recycled concrete for airport pavement is superior to the normal pavement concrete, and can meet the requirements of airport pavement, the flexural strength is higher than the ordinary pavement by 4%-ll%; the frost resistance grade, which is up to F250, increasing by more than 200 % compared with normal pavement concrete, can fulfill the requirement of pavement in the very chilly area; 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. The workability of recycled concrete made in field is well, and can be constructed expediently, with the 28-day flexural strength higher than 5.5 MPa. All the quality items meet the requirements of standard and design, and the application effect is well.关键词
机场道面/再生混凝土/性能/微观结构Key words
airport pavement/recycled concrete/properties/microstructure分类
建筑与水利引用本文复制引用
刘庆涛,岑国平,蔡良才,吴永根,吴和盛,陈福年,黄庆国,朱志远..机场道面再生混凝土的性能与应用[J].中南大学学报（自然科学版）,2012,43(8):3263-3269,7.基金项目
军队科研基金资助项目(KH0706014) （KH0706014）
