Results 191 to 200 of about 208,504 (261)

Itacolumites: The flexible sandstones

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980
Summary Itacolumites (flexible sandstones) display a bimodal stress-strain behaviour resulting from an unusual inter-digitated grain-to-grain fabric. The sandstone can move freely over a limited arc, then locks, and displays only elastic behaviour. Grain contacts are all open about 5 μm, thereby permitting some free movement.
openaire   +1 more source

Experimental investigations on the effects of ambient freeze-thaw cycling on dynamic properties and rock pore structure deterioration of sandstone

Cold Regions Science and Technology, 2018
The issue of rock pore structure deterioration and dynamical mechanical properties has drawn much attention in recent years in the rock engineering community.
Jie-lin Li, R. Kaunda, K. Zhou
semanticscholar   +1 more source

Pore-throat sizes in sandstones, tight sandstones, and shales

AAPG Bulletin, 2009
Pore-throat sizes in siliciclastic rocks form a continuum from the submillimeter to the nanometer scale. That continuum is documented in this article using previously published data on the pore and pore-throat sizes of conventional reservoir rocks, tight-gas sandstones, and shales.
openaire   +1 more source

On the “Caradoc Sandstone” of Shropshire

Quarterly Journal of the Geological Society of London
Summary The conclusions to be drawn from the foregoing data may be thus shortly stated. The rocks east of the Longmynd hitherto known as Caradoc sandstone are now divided into two groups. The lowest and greatest portion is equivalent to the middle and upper portions of the Llandeilo and Bala rocks, and were accumulated in the ...
J. W. Salter, W. T. Aveline
openaire   +1 more source

Effect of water imbibition on uniaxial compression strength of sandstone

, 2020
Rock is a typical porous and heterogeneous geological medium, and water imbibition has a great influence on its mechanical properties. The degree of water imbibition in rock heavily depends on the internal fissures of rock and the soaking time.
Hong-lei Liu, Wancheng Zhu, Yongjun Yu, Tao Xu, Li Rufei, Xige Liu   +5 more
semanticscholar   +1 more source

Effect of wetting–drying cycles on mode I and mode II fracture toughness of sandstone in natural (pH = 7) and acidic (pH = 3) environments

Theoretical and applied fracture mechanics (Print), 2020
Factors such as rainfall and its diffusion into the ground and the subsequent drying cause alternating water–stone interactions leading to loosening of stones in long periods and catastrophic events such as landslides.
A. Dehestani, M. Hosseini, A. Beydokhti
semanticscholar   +1 more source

Influence of Water on the Mechanical Properties and Failure Behaviors of Sandstone Under Triaxial Compression

Rock Mechanics and Rock Engineering, 2022
Xin Liang, S. Tang, Chun’an Tang, L. Hu, Feng Chen   +4 more
semanticscholar   +1 more source

Experimental investigation on the crack propagation behaviors of sandstone under different loading and unloading conditions

International Journal of Rock Mechanics And Mining Sciences, 2020
A series of laboratory tests were conducted in order to investigate the effects on crack propagation characteristics of confining pressure, as well as the effect of the unloading rates of confining pressure.
Yan Chen, J. Zuo, Zhenhua Li, Rong Dou
semanticscholar   +1 more source

Pore structure and multi-fractal analysis of tight sandstone using MIP, NMR and NMRC methods: A case study from the Kuqa depression, China

Journal of Petroleum Science and Engineering, 2019
The pore structure and fractal characteristic of tight gas sandstone from Cretaceous Bashijiqike Formation in Kuqa depression were investigated, using thin section, scanning electronic microscope (SEM), mercury intrusion porosimetry (MIP), nuclear ...
Xiaobo Guo, Zhilong Huang, Zhao Libin, Han Wei, Chao Ding, Xiongwei Sun, Ruitao Yan, Tonghui Zhang, Xuejun Yang, Ruomei Wang   +9 more
semanticscholar   +1 more source

Study on the Effect of Dry–Wet Cycles on Dynamic Mechanical Properties of Sandstone Under Sulfuric Acid Solution

Rock Mechanics and Rock Engineering, 2022
Xin Huang, Jianyong Pang, Jiuqun Zou
semanticscholar   +1 more source