Elastic modulus-CBR Index correlation using FEM
Elastic modulus-CBR Index correlation using FEM
ABSTRACT: In pavement design, the CBR is a very common geotechnical investigation for predicting the strength of a subgrade layer. The California Bearing Ratio or CBR test is performed in construction materials laboratories to evaluate the strength of soil subgrades and base course materials. Plate Loading Test is one that gives more realistic results for the determination of soil elastic parameters. Moreover, PLT remains difficult and costly, therefore, finding a correlation between this and other laboratory tests is quite beneficial.
The aim of this study is to make a correlation between the CBR measurement and the strain modulus for the calcareous tuff of Oued Sedder, Djelfa, Algeria. To make this correlation, a numerical simulation was performed using the 2D finite element software, Plaxis 2D. The proposed correlation is validated by an experimental result deduced from PLT and CBR tests carried out on the same site. The results obtained, compared with other proposed correlations reveals a good match.
Younes Abed; Ali Kaddouri
18th African Regional Conference on Soil Mechanics and Geotechnical Engineering (ARCSMGE2024)
Soil characterization
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