The main purpose of this paper is to experimentally explore the effects of grain shape and Received 22 August 2019 size on the mechanical behavior of compacted earthen materials. Sand-earth, natural Received in revised form 26 October 2019 rounded gravel and crushed angular gravel are the three materials used in this study. Both Accepted 29 October 2019 gravels are from the same site and characterized by the same grain size curve. The uniaxial compression tests, the results of which are presented and discussed in this paper, were performed on cylindrical specimens of three materials: sand-earth mixture, rounded gravel-earth mixture and angular gravel-earth mixture. The tested specimens were prepared under optimum compaction references, using the Proctor test procedures. For.
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