Results 81 to 90 of about 3,473 (205)
Chemo-Mechanical Modeling of Anhydritic Claystones
58th U.S. Rock Mechanics/Geomechanics SymposiumABSTRACT: This paper presents a model for the swelling of anhydritic claystones – a severe problem in tunnelling. The model incorporates the effect of the chemical process of anhydrite to gypsum transformation via a strain decomposition in a mechanical (e.g., elastoplastic) part and a reaction-induced part.
Nousiou, Antonia, Anagnostou, Georgios
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, 2015 The Bandung bentonite deposit is located in Wonosegoro District, Boyolali Regence, Central Java. Characteristics of bentonite in this area are very important due to increase demand on bentonite in the industry.
Titisari, Anastasia Dewi +2 more
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Constitutive Model for Thermal Compaction of Clayey Geomaterials and Application to COx Claystone
, 2023 International audienceClay formations present very favourable conditions for the long-term containment of radioactive waste due to their low hydraulic conductivity, high radionuclide retention capacity and limited fracturing in their natural state.
M.-N. Vu +7 more
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JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2018 Research areas were located in the west of Kolok Nan Tuo Village. Geographically this area is located at coordinates 00 ° 36'57,85 '' - 00 ° 37'56,89 '' latitude and 100 ° 42'10,08 '' 100 ° 43'47,28 " BT.
Catur Cahyaningsih +3 more
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, 2023 Claystone is actually a type of hard soil or soft rock. To reveal the engineering geological characteristics of the Xigeda formation claystone in Luding County (Western Sichuan, China), some experiments, including X-ray diffraction (XRD), scanning ...
Deguang Song +6 more
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On the determination of pore size distribution by nitrogen Adsorption and Mercury intrusion Porosimetry for claystone [PDF]
E3S Web of ConferencesUnderstanding the evolution of Callovo-Oxfordian (COx) claystone porosity under alkaline conditions is crucial for assessing its role as a geological barrier for nuclear waste deep geological disposal facility.
Allache Mehana, Cui Yu Jun, Mokni Nadia
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Palynology and stratigraphy of the Upper Miocene Chad Formation, Bornu Basin, northeastern Nigeria
Journal of Palaeogeography, 2017 Both lithological and palynological analyses were employed to decipher sedimentary stacking patterns and to date the sediments within the interval 50–325 m in Kemar-1 well, Bornu Basin, northeastern Nigeria. Eight different lithofacies units deposited in
A. Olatunji Ola-Buraimo +1 more
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Tunnelling in sulphate claystones
, 2007 The paper reviews first the performance of some tunnels built in gypsiferous-anhydritic rocks, especially in Central Europe. Then, a description of the main gypsum-laden lithological rock units in Spain is made as an introduction for a description of the conditions found in a number of recently built tunnels in Spain, most of them associated with the ...
Alonso Pérez de Agreda, Eduardo +3 more
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Active porosity in swelling claystone and shales: insight from the Callovo-Oxfordian claystone
, 2018 In swelling claystones, significant clay-water interactions take place along the faces of the smectites minerals contained in the clay fraction, giving rise to the distinction between free water and adsorbed water. Further insight was recently gained by means of microstructure investigations, showing that the hydration mechanisms of pure or compacted ...
Belmokhtar, Malik +3 more
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(Table 1) Microfacies of Callovian claystone marl at DSDP Hole 76-534A
, 1983 (Table 1) Microfacies of Callovian claystone marl at DSDP Hole 76 ...
Robertson, Alastair H F +5 more
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