A series of laboratory tests were conducted, analyzing the influence stress level and infiltration time on creep properties coal-rock. The total damage variable based mechanics is defined coupling macro-benchmark timeliness, by characterizing pattern infiltration–stress effect variable. study shows that coal-rock underwent a process from surface drying shrinkage to water absorption swelling wat...

Buckle folds are common traps for hydrocarbon in several contractional provinces. Buckle folds form where stratified sequences rest a top salt or some other utterly weak rock as a decollemet zone in units with high competency contrasts by a compressive stress which acted along the length of the rock layers. An important parameter affecting buckle folding of a competent zone above a mobile decol...

Seasonal freeze–thaw environments are one of the key factors that aggravate mechanical strength decay excavated and unloaded rock masses on reservoir banks in cold areas. To study time-dependent properties an mass a bank slope under action, triaxial unloading tests were carried out sandstone, simulating freezing conducted, creep implemented with graded incremental loading specimens subjected to...

Most late transition metal (LTM) monoxides crystallize in other than a rock salt structure, which is so common in the earlier transition metal monoxides. Here we present theoretical evidence based on density functional theory that an electron-phonon coupling involving a single soft mode in the cubic cell is responsible for the onset of the experimentally observed structures of the late transiti...

New high-capacity intercalation cathodes of Li2V x Cr1-x O2F with a stable disordered rock salt host framework allow a high operating voltage up to 3.5 V, good rate performance (960 Wh kg-1 at ≈1 C), and cycling stability.

Chloride-rich brines are increasingly recognized as playing an important role in high pressure and temperature metamorphic and magmatic systems. The origins of these saline multicomponent fluids are debated, but experimental evidence suggests that regardless of their origin they must be important agents of rock alteration and mass transfer wherever they occur. Studies of the solubility of quart...

In the Present study, attempt will be made to propose a new method for prediction of long-term essential creep of concrete utilizing some short-term creep tests under high temperature. To do so, regarding the similarities between essential creep of concrete and creep in viscoelastic materials, the time–temperature equivalence relation in viscoelastic materials is evaluated for concrete. This re...

The imaging and characterization of individual molecules and atomically thin, effectively one-dimensional crystals of rock salt and other halides encapsulated within single-walled carbon nanotubes are reviewed in this article. These species were imaged by conventional and super-resolved high-resolution transmission electron microscopy and by scanning tunneling microscopy, revealing the detailed...

Abstract The use of molten-salt–based energy production and storage systems requires high-temperature corrosion- creep-resistant structural materials. This study investigated the microstructure evolution corrosion characteristics Hastelloy N under working stress in a molten salt environment. Selective diffusion Cr at grain boundaries (GBs) degraded properties GBs, making them preferred location...