VERIFICATION OF MEASUREMENT ACCURACY OF MOBILE ASPHALT PAVEMENT DENSITY MEASURING DEVICE

Abstract

 Recently, electromagnetic wave density measurement devices have been used for density control at construction sites. However, as with the core sampling method, the measurement is made at a point, making it difficult to control the density of the entire construction area (areal control). Therefore, there is a need for a technology to measure density nondestructively, quickly, and continuously.

 In this study, to clarify the measurement accuracy of the newly developed mobile asphalt pavement density measuring device (RDM), the relationship between the relative permittivity of the asphalt mixture and density was obtained through laboratory tests. Next, the core density of the constructed test pavement was compared with the density measured by the RDM, and it was found that the two values were almost equal. Furthermore, when compared to the density measured by a commonly used electromagnetic wave density measurement device, the RDM was found to be extremely higher.