Results 161 to 170 of about 215,357 (357)

Soil micromorphology for construction science: the mortar archaeometry [PDF]

open access: yes, 2012
Micromorphology revealed in depth evaluation of materials particularly soil micromorphology yielded numerous data on processes such as formation, neoformation and transformation of minerals and microstructure in soils, pottery and construction materials.
Akça, Erhan   +3 more
core  

In situ loading of a pore network model for quantitative characterization and visualization of gas seepage in coal rocks

open access: yesDeep Underground Science and Engineering, EarlyView.
Fine modeling of a three‐dimensional fracture structure under dynamic loading of coal is carried out. The streamline distribution law of pressure and velocity field in the loading process of the coal specimen is analyzed, the absolute permeability of the coal specimen is calculated, and the feasibility of the pore network model algorithm and finite ...
Huazhe Jiao   +6 more
wiley   +1 more source

Moessbauer Spectroscopy for Lunar Resource Assessment: Measurement of Mineralogy and Soil Maturity [PDF]

open access: yes
First-order assessment of lunar soil as a resource includes measurement of its mineralogy and maturity. Soils in which the mineral ilmenite is present in high concentrations are desirable feedstock for the production of oxygen at a lunar base.
Agresti, D. G.   +6 more
core   +1 more source

An analytical solution of direction evolution of crack growth during progressive failure in brittle rocks

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel analytical method is proposed to evaluate the shear stress effect on the progressive compressive failure and microcrack growth direction in brittle rocks. The shear stress effect on the wing crack growth direction during the progressive compressive failure is determined. The initial crack angle effect on the y‐direction peak stress and the wing
Xiaozhao Li   +6 more
wiley   +1 more source

Gas migration at the granite–bentonite interface under semirigid boundary conditions in the context of high‐level radioactive waste disposal

open access: yesDeep Underground Science and Engineering, EarlyView.
A series of water infiltration tests and gas permeability tests were conducted on granite and granite–bentonite samples. According to the results, the interfaces between granite and bentonite and the damaged granite were considered to be the preferentcial pathway for gas migration.
Jiangfeng Liu   +5 more
wiley   +1 more source

Analysis of squeezing‐induced failure in a water tunnel and measure of rehabilitation: A case study of Tishreen tunnel, Syria

open access: yesDeep Underground Science and Engineering, EarlyView.
Different failure modes observed in Tishreen tunnel include Floor heave, wall spalling, crashing of slab, and lining convergence reaching the failure limit. Abstract Squeezing phenomena can lead to severe loads in deep tunnels, especially in the presence of a low ratio of surrounding rock strength to overburden pressure.
Mohannad Mhanna, Hussein Hadi Hussein
wiley   +1 more source

Seismic performance of concrete tunnel–sand–pile interaction by the shake table test

open access: yesDeep Underground Science and Engineering, EarlyView.
This research presents the square root sum of squares response of displacements and tunnel moments under the Kobe and Loma Prieta seismic excitations with a peak ground acceleration of 0.05 g for various dry relative densities of local sand in Bangladesh.
Md. Foisal Haque, Mehedi A. Ansary
wiley   +1 more source

The Mineralogy Manuscript Preserved in the Archivo General de Palacio, (Madrid, Spain): A Case Study

open access: yesGeosciences
The manuscript of the Mineralogical lessons for the 1824–1825 course being held at the Royal Cabinet of Natural History had been found in the Archivo General de Palacio (AGP; Madrid, Spain) by the priest Donato García, who replaced Christian Herrgen and ...
María Rosario Alcalde-Fuentes   +3 more
doaj   +1 more source

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