MULTIPLE CORRELATIONS BETWEEN YOUNG'S MODULUS AND IDENTIFICATION'S PROPERTIES OF BUILDING MATERIALS

Theoretical formulas for rheological characteristics, and particularly the Young's modulus of grained sized material, notably lateritic soils and crushed gravels, are commonly simply correlated with CBR. Due to the high cost, for some laboratory, of the tools used for its direct measurement (Triaxial apparatus with repetitive charges), the present study has been carried out to find out a multiple correlation between the Young modulus and the simple identification's properties of those building materials. The results obtained has been adjusted both with the Sikali et al and LCPC's simples correlations which used CBR relation, and the Billang et KANA's formula for Young's modulus, which is related to deflection's characteristics. The data used came from LABOGENIE's archive. We first estimated the correlation's matrices and retained pertinent parameters related with the Young's modulus. The correlations obtained seemed to be suitable, the percentage of errors obtained are less than 10%.