华中科技大学学报：自然科学版2011，Vol.39Issue(12)：128-132,5.
机场道面再生混凝土的抗冻性能及机理
Frost-resistant performance and mechanism of recycled concrete for airport pavement
摘要
Abstract
In order to study the frost-resistant performance and mechanism of the airport pavement recycled concrete,the ＂double mixing＂ technique with high quality fly ash and high efficiency admixture was adopted,then the mix proportion design of pavement recycled concrete was optimized and the frost-resistant performance was studied.Based on the testing results and the destroy phenomenons of the specimens,the frost-resistance performance evaluating indicators of the recycled concrete was discussed,and the frost-resistant mechanism of recycled concrete for airport pavement was analyzed in aspects of the air capacity,the micro-pore structure,the microstructure.It is suggested that the air capacity of the recycled concrete for pavement in the chilly area is 5%～6%,and high quality mineral admixtures should be added to the recycled concrete for pavement to improve the frost-resistance performance of the recycled concrete.The testing results show the frost-resistance grade of the recycled concrete for airport pavement is up to F250,the frost-resistance performance is superior to ordinary pavement concrete,which can meet the requirement of the pavement design specifications.关键词
机场工程/混凝土道面/再生混凝土/抗冻性能/微观结构/机理Key words
airport engineering/concrete pavement/recycled aggregate concrete/frost-resistant performance/microstructure/mechanism分类
建筑与水利引用本文复制引用
刘庆涛,岑国平,蔡良才,吴和胜..机场道面再生混凝土的抗冻性能及机理[J].华中科技大学学报：自然科学版,2011,39(12):128-132,5.基金项目
军队科研基金资助项目 （）
