The unified effective stress theory based on suction stress (SSCC theory) enables the characterization of soils under both saturated and unsaturated conditions with one closed-form relationship. This study provides experimental verification of this theory through the unconfined compressive strength test (UCS) and indirect tensile test strength (ITS) on silty clay soil stabilized with fiber. A series of matric suction, ITS, and UCS tests were conducted to validate the SSCC theory through the representation of the results of ITS and UCS tests in terms of mean total stress (p) versus deviatoric stress (q) and mean effective stress (p`) versus deviatoric stress (q). The results of the validation procedures showed that the SSCC theory is applicable and valid at a range of 6%–16% of water content on the silty clay and the silty clay fiber-reinforced soils. There is a small fluctuation in the increase of ITS and UCS values with increasing fiber content due to randomly oriented distribution of the fiber. The addition of glass fiber does not significantly affect the capacity of water retention of the soil. It improves the condition of the mechanical soil properties at the end of construction more than of the effective stress condition.

基于吸力应力的统一有效应力理论（SSCC 理论）能够以一种封闭形式关系表征饱和和非饱和条件下的土壤。本研究通过对纤维稳定的粉质粘土进行无侧限抗压强度试验 (UCS) 和间接抗拉强度试验 (ITS)，对该理论进行了实验验证。通过用平均总应力 (p) 与偏应力 (q) 和平均有效应力 (p) 表示 ITS 和 UCS 测试的结果，进行了一系列基质吸力、ITS 和 UCS 测试以验证 SSCC 理论`) 与偏应力 (q)。验证程序的结果表明，SSCC 理论在粉质粘土和粉质粘土纤维增强土壤上的 6% 至 16% 的含水量范围内是适用和有效的。由于纤维的随机取向分布，随着纤维含量的增加，ITS 和 UCS 值的增加有很小的波动。添加玻璃纤维对土壤的保水能力没有显着影响。它比有效应力条件更能改善施工结束时的机械土壤性质条件。