Results 171 to 180 of about 71,351 (309)

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Clays and Clay Minerals

, 1960
openaire   +2 more sources

Mineralogy and technical properties of clayey diatomites from north and central Greece

Open Geosciences, 2009
Ilia Ioanna, Stamatakis Michael, Perraki Theodora   +2 more
doaj   +1 more source

A Biotechnological Approach to Enzyme-Based Fertilisers: Immobilisation of Acid Phosphatases. [PDF]

Microb Biotechnol
Recio MI, de la Torre J, Rocha-Martin J, de la Mata I, Ramos JL.   +4 more
europepmc   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Clays as Additives in Ruminant Feed: A Quantitative Meta-Analysis of Their Effects on Enteric Methane, Digestion, Health and Productivity. [PDF]

Animals (Basel)
Hosen Z, Islam MR, Naidu R, Biswas B.
europepmc   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Effect of the Physical and Chemical Characteristics of Polycarboxylate Ether Superplasticizers on the Spreading of Calcined Clays with Different Metakaolinite Contents Suspended in Synthetic Cement Pore Solution. [PDF]

Materials (Basel)
Cruz SM, Lima ÍRG, Serafim MJS, Tobón JI, Rêgo JHS.   +4 more
europepmc   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Methane Production on Mars-Relevant Clay Minerals and Simulant Regolith. [PDF]

Microorganisms
Mickol RL, Waddell WH, Wray J, Pohlkamp R, Kern C, Kral TA.   +5 more
europepmc   +1 more source