Residual strength of clays and correlations using Atterberg limits Available to Purchase

Various attempts have been made to correlate the residual strength friction angle ϕ′_r of soils to their index parameters, either the particle size or the Atterberg limits. The first correlation attempt was that of Skempton (1964) relating ϕ′_r to clay fraction, followed by a number of others, the best known probably being Lupini et al. (1981), Mesri & Cepe-da-Diaz (1986), Colotta et al. (1989), and Stark et al. (1994). The purpose of this paper is to reconsider these correlation attempts, and to make some general comments about the use of Atterberg limits for correlation...