It is more and more important to determine the shear strength of rock-soil aggregate mixture quickly and accuratly while the mixture is widely used in roadbeds, dykes, dams and foundations.

• 摘要随著土石混合料越来越广泛地被道路、堤坝、基础等工程采用，快速、准确地确定其抗剪强度指标显得越来越重要，室内大型直剪试验具有操作简单，可快速测定混合料的强度指标等特点，因而在工程中被广泛应用。