Comparison of performances of early aged pre-vibrated cement-stabilized macadam formed by different compactions

Abstract

The cement-stabilized macadam formed by static (SC) and vibration compaction (VC) were pre-cracked and their properties comparison were conducted. It indicated that the lowest self-healing rate of VC and SC at 7 days were 57.1% and 54.2%, respectively, with the pre-cracking time of 3 days and degree of 40%. It proved that the shrinkage strains of VC and SC were reduced at most by 35.8% and 35.3%, respectively, with the pre-cracking time of 2 days and degree of 40%, respectively, and the corresponding crack resistance were improved by nearly 300%, with the time of 2 days and degree of 30%. The results showed that VC had a better performance.