The mechanic and permeability behavior in sandy mudstone is crucial to hazard prevention safety mining. In this study, investigate the evolution characteristic of mechanical properties subjected loading in-site stress, a series triaxial compression–seepage experiments are performed. increase decrease strength gradually transformed responding confining stress from 5 15 MPa, which corresponds tra...

We use time-domain pulse widths to estimate static stress drops for 279 M L 2.5 to 4.0 aftershocks of the 17 January 1994, M w 6.7 Northridge, California, earthquake. The stress drops obtained range from 0.02 to 40 bars, with a log average of 0.75 bar. Error bars computed for our estimates are typically a factor of 5, indicating that the three order of magnitude scatter in stress drops is not s...

Abstract: In practical engineering structures, concrete is usually under a multiaxial stress state. Therefore, it significant to investigate the mechanical behavior of microcapsule self-healing triaxial compression. this study, three-dimensional mesoscopic cohesive crack model based on element established simulate uniaxial compression tests and conventional with different content. The result sh...

The expression of effective stress proposed by Terzaghi has always been questioned. Many correction formulas are modification pore pressure term. factor is related to porosity, contact area and other factors. When the particles in point contact, that Terzaghi, while for surface particles, actual increases produced passing through based on stress. There many factors affect development pressure, ...

In recent years, various studies have been undertaken on how to use waste materials in civil engineering projects. Among waste materials, waste rubber has been highlighted to be used for different purposes such as reinforcing of soil and making of reinforced slopes. To investigate the properties of granulated rubber-soil mixture and its application in making of slopes behind retaining walls, so...

It is generally believed that core discing a rock failure phenomenon under high in-situ stress, and stress closely related to the characteristics of discing. The drilling tests intact granite were conducted on laboratory servo-controlled test platform. was observed showed at rate (> 15 mm/min) no confining pressure (0 MPA). fluctuation parameter consistent with section along core. mode discs...

Plastic deformation of GaAs, InP, and InSb under hydrostatic confining pressure has been performed in the temperature range 77 to 500 K. Slip lines indicate cross-slip of screw dislocations. Electron microscopy reveals long screw dislocations left in the deformed specimens. The temperature dependence of the critical shear stress tc below 300 K is weak, producing a hump in the tc ±T curve. The k...

Unidirectional fiber-reinforced composites are often observed to fail in a longitudinal splitting mode in the fiber direction under far-field compressive loading with weak lateral confinement. An energy-based model is developed based on the principle of minimum potential energy and the evaluation of effective properties to obtain an analytical approximation to the critical stress for longitudin...

Confining strings in 4D are effective, thick strings describing the confinement phase of compact U(1) and, possibly, also non-Abelian gauge fields. We show that these strings are dual to the gauge fields, inasmuch their perturbative regime corresponds to the strong coupling (e ≫ 1) regime of the gauge theory. In this regime they describe smooth surfaces with long-range correlations and Hausdorf...

We critically reconsider our recent observation of confining string shrinkage in pure glue SU(2) lattice gauge theory near the continuum limit. Using the advanced numerical techniques we argue that imperfect overlap with the string ground state and corresponding ambiguities in T → ∞ extrapolation are likely to be the cause of the observed scaling violations. In particular, even in the limit of ...