<p>In this paper the results of SPT and PLT tests on gravely soils of Tehran alluvium are evaluated. Due to the results obtained the correlation between SPT results (N1) 60 and modulus of subgrade reaction (Ks) are also presented for gravely soils. The complete ...

<p>The paper reviews the in situ freezing method to retrieve undisturbed sandy and gravelly soil samples and available laboratory equipments to test coarse grained soils. As for the triaxial equipments, the importance of local strain measurements and other ...