Relative Dielectric Permittivity Variations during Compaction as a Mean of Compaction Quality Control: Case Study on Laterite Samples from Senegal  

作　　者：Mapathé Ndiaye Makhaly Ba Teophile Kiendrebeogo Linda E. Gaffo Foudjo Mapathé Ndiaye;Makhaly Ba;Teophile Kiendrebeogo;Linda E. Gaffo Foudjo(Laboratoire de Mécanique et de Modélisation, Université de Thiès, Sénégal)

机构地区：[1]Laboratoire de Mécanique et de Modélisation, Université de Thiès, Sénégal

出　　处：《International Journal of Geosciences》2023年第2期238-250,共13页地球科学国际期刊（英文）

摘　　要：This study explores an alternative to the classical use of direct methods, as water content and dry density measurements, for compaction quality control. For this purpose, the dielectric properties of lateritic materials are determined by radar method and are compared with the permittivity determined from the Topp formula and from the CRIM model. This approach allowed to establish a relationship between the geotechnical properties determined during compaction such as dry density, water content or porosity with dielectric permittivity. The obtained results made it possible to determine an optimum dielectric permittivity corresponding to the optimum dry density and the optimum water content that could be used for non-destructive in situ compaction testing. Such an approach should improve the implementation and effectiveness of in situ compaction quality control of geotechnical infrastructures.This study explores an alternative to the classical use of direct methods, as water content and dry density measurements, for compaction quality control. For this purpose, the dielectric properties of lateritic materials are determined by radar method and are compared with the permittivity determined from the Topp formula and from the CRIM model. This approach allowed to establish a relationship between the geotechnical properties determined during compaction such as dry density, water content or porosity with dielectric permittivity. The obtained results made it possible to determine an optimum dielectric permittivity corresponding to the optimum dry density and the optimum water content that could be used for non-destructive in situ compaction testing. Such an approach should improve the implementation and effectiveness of in situ compaction quality control of geotechnical infrastructures.

关 键 词：LATERITE Proctor Water Content Dry Density Dielectric Permittivity 

分 类 号：TB3[一般工业技术—材料科学与工程]