Optimization Design of Properties of Concrete for Airport Pavement

Abstract:

Effects of air content and mineral admixtures on the flexural strength, frost resistance and deicerfrost scaling resistance of airport concrete were investigated in this paper. The results show that the frost resistance and deicerfrost scaling resistance of concrete are significantly improved, and its flexural strength is enhanced by the addition of the airentraining agent. The frost resistance and deicerfrost scaling resistance of dry concrete are much lower than those of normal concrete at a similar air content. 15% fly ash or slag is suggested to replace Portland cement in order to get a higher late strength growth. The data on the airbubble structure parameters of the concrete can explain these results well, and prove that the airbubble stability and airbubble structure of the dry concrete are obviously worse than those of the normal concrete.