@article{Chen Fang_Hideyoshi Shimizu_Tatsuro Nishiyama_Shin-Ichi Nishimura_2019, title={PREDICTING RESIDUAL FRICTIONAL ANGLE BY ATTERBERG LIMITS FOR RESERVOIR EMBANKMENT SOILS}, volume={17}, url={https://geomatejournal.com/geomate/article/view/2151}, abstractNote={<p>Slope stability is one of the greatest issues of concern in geotechnical engineering. In slope<br>stability analyses, the residual strength of slip zones is the most important parameter for evaluating slope<br>stability and for understanding the reactivation mechanisms. However, it is time-consuming and costly to<br>obtain the residual frictional angle through shear tests. This paper presents the results of a laboratory study<br>designed to evaluate the correlations between the residual frictional angle and the Atterberg limits, which<br>include the liquid limit, the plastic limit and the plasticity index, using eight kinds of reservoir embankment<br>soil samples. The residual frictional angle was measured by the Bromhead ring shear apparatus using remolded<br>samples. Based on the laboratory study, significant correlations between the residual frictional angle and the<br>different indexes were proposed for the reservoir embankment soil, especially in terms of the particle size of<br>the soil, which was less than 0.425 mm. Processing the data on the shear tests led to the discovery that the<br>quantity of eight tests was sufficient for obtaining relevant accuracy in determining the residual frictional angle.<br>Based on the results of the tests, the relationships between the residual frictional angle and all the indexes were<br>found. Compared with the other indexes, the liquid limit had a better correlation with the residual frictional<br>angle. Formulas were predicted in this study that can provide a convenient and highly accurate means for<br>calculating the residual frictional angle value for application to worldwide geotechnical engineering projects.<br><br></p>}, number={63}, journal={GEOMATE Journal}, author={Chen Fang and Hideyoshi Shimizu and Tatsuro Nishiyama and Shin-Ichi Nishimura}, year={2019}, month={Apr.}, pages={111–118} }