本试验方法包括测定粘性土的无侧限抗压强度 在未受干扰、重塑或压实条件下，使用应变控制的 轴向载荷。本试验方法提供了粘性土强度的总应力近似值。本试验方法仅适用于在试验加载期间不会排出泌水（由于变形或压实而从土壤中排出的水）且在去除围压后仍能保持固有强度的粘性材料，如粘土或胶结土。 干燥和易碎的土壤、裂缝或凹凸不平的材料、淤泥、泥炭和沙子不能用这种方法进行测试，以获得有效的无侧限抗压强度值。注1——T 296涵盖了侧向约束粘性土的松散、不排水强度的测定。本试验方法不能替代T 296。

This test method covers the determination of the unconfined compressive strength of cohesive soil in the undisturbed, remolded, or compacted condition, using strain-controlled application of the axial load.This test method provides an approximate value of the strength of cohesive soils in terms of total stresses.This test method is applicable only to cohesive materials that will not expel bleed water (water expelled from the soil due to deformation or compaction) during the loading portion of the test and that will retain intrinsic strength after removal of confining pressures, such as clays or cemented soils. Dry and crumbly soils, fissured or varved materials, silts, peats, and sands cannot be tested with this method to obtain valid unconfined compressive strength values.Note—The determination of the unconsolidated, undrained strength of cohesive soils with lateral confinement is covered by AASHTO T 296.This test method is not a substitute for AASHTO T 296.