Existing studies on transversely isotropic rock formations, a special geology, have mainly focused its mechanical characteristics; whereas, investigations fracture process and damage microscopic mechanisms are relatively limited. To remedy this deficiency, in study, three-dimensional numerical model is established using discrete elements (PFC3D), focusing the effects of confining pressure (0, 5...

This paper focuses on the presence of nodules insoluble materials within salt specimens, and their effect volumetric strain measurements dilatancy phenomenon. We analyzed experimental results over 120 conventional triaxial compression tests, found that in 20% cases, were atypical. also noted natural variability specimens can lead to a non-negligible data scattering when different are subjected ...

Aeolian sand widely exists in the desert of western China. The reinforcement aeolian is considerable significance to construction transmission lines desert. In order study impact different cement contents and moisture content on performance cement-stabilized sand, 18 types samples with water were prepared. confined unconfined compression tests conducted TSZ series automatic triaxial instrument....

Aeolian sand is a special roadbed filler, but its three-dimensional mechanical properties are rarely studied. To obtain the characteristic of deformation, strength on deviatoric plane, and failure in three dimensions, series triaxial drained tests aeolian Tengger Desert, under condition constant average principal stress, p, were conducted by an equivalent alternative method to achieve true stre...

Rock masses in underground space usually experience the coupling of high-temperature field, stress field and seepage which gives them complex mechanical behavior permeability characteristics. To study properties characteristics red sandstone under different temperature environments, a test high triaxial compression is carried out based on RLW-2000 multi-field tester. The results show that plast...

this paper presents the results of a series of monotonic and post-cyclic triaxial tests carried out on a clay specimen and three types of clay-sand mixed specimens. the focus of the paper is on the post-cyclic mechanical behavior of the mixed specimens, as compared to their monotonic behavior. analyses of the tests results show that cyclic loading degrade undrained shear strength and deformatio...

In order to investigate the properties of Y-shaped cracks of brittle materials under compression, compression tests by using square cement mortar specimens with Y-shaped crack were conducted. A true triaxial loading device was applied in the tests, and the major principle stresses or the critical stresses were measured. The results show that as the branch angle θ between the branch crack and th...

This paper presents an interpretation technique to quantify the effects of compaction state and matric suction on undrained shear strength compacted clay under confined triaxial compression. novel is based mathematical frameworks SHANSEP (Stress History Normalized Soil Engineering Property) method for saturated soil BBM (Barcelona Basic model) unsaturated soil. Test data Calgary till were analy...