Development and Application of an Instantaneous Impulsion-based Detector to Inspect the Degree of Compaction of the Cement-stabilized Macadam

To inspect the degree of compaction of cement-stabilized macadam (CSM), a new detector was developed based on an instantaneous impulsion method. The degree of compaction could be assessed by the acceleration response value (ARV). To achieve the appropriate parameter of device, the gaskets, falling distance, and hammer weight were optimized. The correlation coefficient of degree of compaction and ARV were also improved. The instrument parameters and operability of the instrument were determined by a correlation coefficient and the device operability. The case study on two types of CSM with different degrees of compaction indicated that the ARV showed a highest linking with the degree of compaction when the gasket of DP-4 with a falling distance of 40 cm and a hammer weight of 5.7 kg. Compared to the falling distance and hammer weight, the type of gasket impacts highly on the correlation coefficient. The case study proves the new developed device with more than 0.8 (correlation coefficient).