Limestonehigh temperaturebidirection restraintsswelling stressIn the context of the stability and safety of rock engineering under high temperature, the swelling characteristics of limestone from 200° to 800° under high temperature was investigated by the experiment system used to measure the swelling ...
The temperature, pH, and carbonate hardness of 415 water samples were determined in four limestone areas in the southern Rocky Mountains and Selkirk Mountains of Canada. Sampling covered all of the major carbonate rock formations of the region, ranged across the floral lifezones and included ...
Firstly, I-RPT ultrasonic detector was used to test the wave velocity of karst limestone with different initial microstructure and water content. Then, RMT-150B rock testing machine and DS2-16B acoustic emission system were used to test the acoustic emission (AE) under uniaxial compression. Mechan...
摘要: This work discusses an experimental investigation on the thermal damage characteristics of limestone and underlying mechanism. Cylindrical rock samples were heated to a specific temperature level of...关键词:Experiments Limestone Thermal damage Mechanism analysis ...
The existing fatigue models are not sensitive to load cycles and do not consider the effect of osmotic pressure. To study the strain characteristics and fatigue constitutive model of limestone under osmotic pressure and cyclic disturbance coupling, 300 cycles of loading and unloading tests under differ...
He MC, Miao JL, Feng JL (2010) rockburst process of limestone and its acoustic emission characteristics under true-triaxial unloading conditions. Int J Rock Mech Min 47(2):286–298 Article Google Scholar He SQ, Song DZ, He XQ et al (2020a) Coupled mechanism of compression and prying-in...
A study on the mechanical characteristics and permeability properties of sandstone and limestone from a coal mine under 3D stresses has been carried out with the MTS815 rock mechanics test system, and the characteristics of mechanics and permeability before and after the rock failure under hydro-mech...
They understood the different change characteristics of the fracture energy and the acoustic emission energy of the fracture surface. Carpinteri et al.26 carried out uniaxial compression test on concrete, rocks-limestone, marble and granite-specimens, the post-peak response of different samples is ...
Microfacies characteristics as seen in thin-sections include: the types of “groundmass”, the different kinds of particle categories, depositional textures, and solution textures. All these criteria can lead to information about the sedimentological and diagenetic development of limestones. Also included...
By the digital image correlation technique, the two-dimensional displacement fields of a bedded limestone with different bedding angles are obtained in this paper. Displacement field evolution process with loading is described in detail, in which the progressive rotation of principal strains can be ...