Results 1 to 10 of about 208,838 (189)

Tunnels in squeezing clay-rich rocks

Underground Space, 2021
Squeezing ground conditions, which can lead to severe loads in tunnels, have historically been associated with the presence of clay minerals in the ground.
Ketan Arora, Marte Gutierrez, Ahmadreza Hedayat, Caichu Xia   +3 more
doaj   +2 more sources

Alteration history of aluminum-rich rocks at Jezero crater, Mars [PDF]

Communications Earth & Environment
Aluminum-rich clay minerals are detected across the ancient surface of Mars and record intervals of intense alteration by liquid water. On Earth, these clay minerals can form from hydrothermal alteration or rainfall-driven chemical weathering over ...
A. P. Broz, B. H. N. Horgan, C. Bedford, C. Royer, H. Manelski, S. Connell, R. C. Wiens, E. C. Cardarelli, J. M. Madariaga, L. Mandon, A. Klidaras, M. Bramble, B. Kathir, O. Forni, John Carter, E. Dehouck, C. Quantin-Nataf, J. R. Johnson, J. I. Nuñez, E. Hausrath, U. Wolf, E. A. Cloutis, P. Beck, J. F. Bell, J. I. Simon, A. Cousin   +25 more
doaj   +2 more sources

Thermal conductivity of unsaturated clay-rocks [PDF]

Hydrology and Earth System Sciences, 2010
The parameters used to describe the electrical conductivity of a porous material can be used to describe also its thermal conductivity. A new relationship is developed to connect the thermal conductivity of an unsaturated porous material to the thermal ...
D. Jougnot, A. Revil
doaj   +6 more sources

The clay rocks properties for the production of the ceramic bricks

Magazine of Civil Engineering, 2022
This paper aimed to study the properties of clay rocks in terms of chemical, mineralogical, and granulometric compositions during the pre- and post-firing processes as compared to regulatory documents.
Abdulhadi Ahmed, Mussa Mohamed, Kadhim Yasir   +2 more
doaj   +1 more source

Classification and Disintegration Characteristics of the Carboniferous Rocks in Guangxi, China

Advances in Civil Engineering, 2021
To investigate the disintegration characteristics of the carbonaceous rocks in Guangxi Province, the typical carbonaceous rocks in the section exposed by the Hechi-Baise Expressway were investigated in this study.
Peng Mo, Junhui Luo, Decai Mi, Zhenchao Chang, Haifeng Huang, Tao Zhang, Guanhua Sun, Yan Li, Ling Zeng, Shihai Wang   +9 more
doaj   +1 more source

Heavy Mineral Distribution and Clay Mineralogy of Injana Formation at Zawita and Daigala Northern Iraq

Tikrit Journal of Pure Science, 2023
This study deals with the minerology of Injana Formation (Late Miocene- Pliocene) at Zawita and Daigala sections, north of Iraq. A total of 13 samples are collected from Injana Formation.
Sarah A.Al-Ameri, Lafta S. Kadhim
doaj   +1 more source

Research of the adsorption of tritium by thermally processed clay rocks [PDF]

Ядерна фізика та енергетика, 2020
The features of tritium adsorption by clay rocks, which mainly consist of clay minerals with high adsorption abilities for tritium oxide (НTO) and super heavy water (T2O), were studied after their thermal treatment at a temperature of 105 and 500 °C. The
O. V. Kovalenko, O. O. Kryazhych, G. M. Veremiychenko, O. A. Volokh   +3 more
doaj   +1 more source

The effect of clay content on the relation between uniaxial compressive strength and needle penetration index for clay-bearing rocks

International Journal of Geo-Engineering, 2021
The needle penetration index (NPI) test is a non-destructive test that is applicable both in the field and laboratory, and does not require any special sample preparation.
Sair Kahraman, A. Sercan Aloglu, Egemen Saygin, Bilal Aydin   +3 more
doaj   +1 more source

Experimental study on the effect of thermal treatment on the mechanical properties of clay-rich rocks (mudstone)

Results in Engineering, 2022
Temperature is one of the most important environmental factors that affect rock engineering properties. The clay-rich rocks such as mudstone are abundant in the earth's crust and have a high affinity to water.
Abdel Kareem Alzo'ubi, Mahmoud Alneasan
doaj   +1 more source

X-RAY DIFFERACTION ANALYSIS FOR THE INTERPRETATION OF CLAY MINERALS PARAGENESIS IN THE NEOGENE SEDIMENTS OF MANG AND VICINITY, SUB-HIMALAYAS, PAKISTAN [PDF]

Earth Science Malaysia, 2017
The Neogene sediments were interpreted to understand the clay mineral paragenesis in rocks using x-ray differaction technique. The process was conducted with an x-ray diffractometer, Anode = Cu (Cu Kᾳ = 1.541871 A ), Filter = Ni, Current = 15 mA and ...
Muhammad, Muhammad
doaj   +1 more source