Crushed waste rocks (CWR), generated from mining operations, have been widely used for the construction of mine haul roads because of their low-cost, high-strength, and availability. Resilient modulus is a necessary input to mechanistic design for mine haul roads, but its determination usually requires advanced and complex equipment such as repeated load triaxial (RLT) test. Repeated load CBR (RLCBR) tests are simpler and more often available, and were therefore investigated in this study to estimate CWR resilient behavior under low and high stress levels. RLCBR equivalent modulus calculated using various equations were validated using RLT resilient modulus. The $M_R\text{-}\theta$ model showed good representation and prediction of CWR resilient behavior under both low and high stress levels. A new equation was also proposed to predict more precisely the equivalent modulus of CWR based on RLCBR tests. Results showed that the impact of loading frequency and waveform was limited, while the measured equivalent modulus increased significantly with contact stress (especially when contact stress < 10%). The effect of dry density and soaking on equivalent modulus was negligible, but specimen drying resulted in a marked increase of the equivalent modulus. The good agreement between RLCBR equivalent modulus and RLT resilient modulus indicates that RLCBR tests could be an effective alternative to RLT tests to estimate resilient behavior of CWR used in mine haul roads.

采矿作业产生的碎石碎石（CWR）由于其低成本，高强度和高可用性而被广泛用于建设矿场运输道路。弹性模量是矿用运输道路机械设计的必要输入，但其确定通常需要先进且复杂的设备，例如重复载荷三轴（RLT）测试。重复载荷CBR（RLCBR）测试更简单且更经常使用，因此在本研究中进行了研究，以评估低应力和高应力水平下的CWR弹性行为。使用RLT弹性模量验证了使用各种方程式计算的RLCBR等效模量。这${\mathrm{中号}}_{\mathrm{[R}}\text{--}\theta$该模型在低应力和高应力水平下均能很好地表示和预测CWR的回弹行为。还提出了一个新的方程，以基于RLCBR测试更精确地预测CWR的等效模量。结果表明，加载频率和波形的影响是有限的，而测得的当量模量随接触应力而显着增加（尤其是当接触应力<10％时）。干密度和均热对当量模量的影响可以忽略不计，但是样品干燥导致当量模量显着增加。RLCBR等效模量与RLT弹性模量之间的良好一致性表明，RLCBR试验可以替代RLT试验，以评估矿用运输道路中CWR的弹性行为。