Abstract The process of particle breakage affects the mechanical characteristics of rockfill materials, which are used extensively in geotechnical projects. Therefore, in this research, a series of large-scale triaxial tests on angular rockfills were conducted to investigate the particle breakage behavior using five different methods (“Marsal”, “Lee & Farhoomand”, “Hardin”, “Lade & Yamamuro” and “Indraratna”). The relation between the particle breakage and each parameter, including “confining pressure”, “maximum deviatoric stress”, “maximum principal stress ratio”, “maximum dilatancy angle”, “peak friction angle” and “D10, D15 and D50” was investigated. Moreover, in order to present a more comprehensive and simplified description of the breakage factor variations, the parameters “Los Angeles abrasion”, “point load strength index” and “changes in Cu and Cc coefficients” were modified to one parameter named “J”. The results indicated that among five breakage factors, Marsal's index best described the breakage behavior of rockfill materials.

中文翻译：

---

大型三轴试验下堆石颗粒破碎的五种不同破碎因素试验研究

摘要 颗粒破碎过程影响堆石料的力学特性，堆石料在岩土工程中得到广泛应用。因此，在本研究中，使用五种不同的方法（“Marsal”、“Lee & Farhoomand”、“Hardin”、“Lade & Yamamuro”和“因陀罗”）。研究了颗粒破碎与“围压”、“最大偏应力”、“最大主应力比”、“最大剪胀角”、“峰值摩擦角”和“D10、D15和D50”等各参数之间的关系. 此外，为了更全面和简化地描述破损因子变化，参数“洛杉矶磨损”，“点载荷强度指数”和“Cu 和 Cc 系数的变化”被修改为一个名为“J”的参数。结果表明，在五个破碎因素中，Marsal 指数最能描述堆石料的破碎行为。