Experimental Study on the Influence of Gravel Content on the Tensile Strength of Gravelly Soil

Abstract

Tensile strength is one of the most important properties affecting anti cracking performance of earth core rockfill dam. However, the influence of gravel content on the tensile strength of gravelly soil is still unclear. In the paper, based on the self-developed uniaxial tensile test device, a series of tensile tests were performed on gravelly soils with different gravel content. For gravelly soils with different gravel content, the tensile strength decreases linearly with the increase of gravel content at the optimal water content and maximum dry density. In addition, Empirical formula to calculate tensile strength of gravelly soil based on the gravel content is put forward. The relevant conclusions are helpful to improve the anti-cracking design level of actual earth core rockfill dam.