道面再生混凝土试验研究

Experimental Study on the Pavement Recycled Concrete

采用掺加优质粉煤灰和高效外加剂的技术路线，进行了机场道面再生混凝土的强度、抗冻性、抗渗性和耐磨性等试验研究。结果表明：所配制的道面再生混凝土性能优于普通道面混凝土，满足机场道面要求，较普通道面混凝土，抗折强度提高4～11％；抗冻等级提高100％；抗渗等级提高300％以上；耐磨性提高18-36%。

It adopted the technique with high quality fly ash and high efficiency admixture, the strength, the frost resist- ances, impermeabilities and abrasion resistances of the recycled concrete for airport pavement were tested in laboratory. The results show that the properties of the recycled concrete for airport pavement is superior to the ordinary pavement concrete, meet the requirements of airport pavement, the flexural strength is higher than the ordinary pavement by 4-11%; the frost resistance grade increases by 100 % compared with ordinary pavement concrete; The impermeability grade by hydrostatic pres- sure method increases by more than 300 % compared with ordinary pavement concrete; The abrasion resistances increases by 18-36 %.