Results 1 to 10 of about 6,160 (166)

Microstructure and Mechanical Properties of Expansive Clay under Drying–Wetting Cycle

Applied Sciences, 2023
Expansive clay is one of the most widely distributed soils in the world. Due to its rich content of strongly hydrophilic minerals—such as montmorillonite—expansive clay exhibits substantial swelling and shrinkage properties, and overconsolidation.
Meng Zang, Jun Tai, Haijun Lu
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Cracking of silty mudstone subjected to wetting-drying cycles

Journal of Rock Mechanics and Geotechnical Engineering
Cracking affected by wetting-drying cycles is a major cause of shallow failure of soft rock slopes. Knowledge of rock tensile properties and cracking behaviors helps better assess the stability of soft rock slopes. This study aims to examine the cracking
Xiaowei Yu, Hongyuan Fu, Ling Zeng, Guijin Zhang, Hongri Zhang, Jie Liu   +5 more
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Visualizing RNA polymers produced by hot wet-dry cycling [PDF]

Scientific Reports, 2022
Abstract It is possible that the transition from abiotic systems to life relied on RNA polymers that served as ribozyme-like catalysts and for storing genetic information. The source of such polymers is uncertain, but previous investigations reported that wet–dry cycles simulating prebiotic hot springs provide sufficient energy to drive ...
Hassenkam, Tue, Deamer, David
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Sustained wet–dry cycling on early Mars

Nature, 2023
The presence of perennially wet surface environments on early Mars is well documented1,2, but little is known about short-term episodicity in the early hydroclimate3. Post-depositional processes driven by such short-term fluctuations may produce distinct structures, yet these are rarely preserved in the sedimentary record4.
Rapin, W., Dromart, G., Clark, B., Schieber, J., Kite, E., Kah, L., Thompson, L., Gasnault, O., Lasue, J., Meslin, P.-Y., Gasda, P., Lanza, N.   +11 more
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WETTING AND DRYING CYCLES EFFECT ON DURABILITY OF GYPSUM SOILS TREATED WITH CALCIUM CHLORIDE OR CEMENT ADDITIVES [PDF]

Tikrit Journal of Engineering Sciences, 2021
The study consists of two stages: the first one is to improve the gypsum soil with cement or calcium chloride and the second stage is to expose these soil specimens to series of wetting and drying cycles .Three soil specimens were taken and marked ...
Farouk M. Muhauwiss, Sura Saad Hassoun
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Volume Changes and Mechanical Properties of Expansive Mudstone below Canals under Wet‐Dry/Wet‐Dry‐Freeze‐Thaw Cycles [PDF]

Advances in Civil Engineering, 2021
The complex environment in northern China is the main reason for degradation of expansive mudstone below the canals, which resulted in instability and damage of canal slopes. In this study, a serial of laboratory tests was conducted to explore the volume changes and mechanical behaviors of expansive mudstone below the canals in Xinjiang.
Rui Zhu, Ying-hao Huang, Zhu Song, Feng Zhou   +3 more
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Dynamic strength of fly ash-modified loess subgrade under influences of drying-wetting cycle

Yantu gongcheng xuebao, 2020
The traffic load and the drying-wetting cycle have an important influence on the strength characteristics and stability of fly ash-modified loess subgrade. To illustrate the influences of drying-wetting cycle on the strength of the fly ash-modified loess,
ZHONG Xiu-mei 1, WANG Qian 1, LIU Zhao-zhao 1, 2, BAI Lan 3, MA Jin-lian 1, LIU Fu-qiang 1, 2, LI Na1, WANG Jun 1
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Prebiotic condensation through wet–dry cycling regulated by deliquescence [PDF]

Nature Communications, 2019
AbstractWet–dry cycling is widely regarded as a means of driving condensation reactions under prebiotic conditions to generate mixtures of prospective biopolymers. A criticism of this model is its reliance on unpredictable rehydration events, like rainstorms. Here, we report the ability of deliquescent minerals to mediate the oligomerization of glycine
Thomas D. Campbell, Rio Febrian, Jack T. McCarthy, Holly E. Kleinschmidt, Jay G. Forsythe, Paul J. Bracher   +5 more
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Strength Deterioration Mechanism of Bentonite Modified Loess After Wetting- Drying Cycles [PDF]

Scientific Reports, 2021
Abstract The employment of bentonite modified loess (BML) is a common method of constructing the anti-seepage lining of landfills in the loess region of China, and its long-term secure performance is threatened by wetting-drying (W-D) cycles.
Ze-Lin Niu, Jian Xu, Yan-Feng Li, Ze-Feng Wang, Bao Wang   +4 more
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Silica Precipitation in a Wet–Dry Cycling Hot Spring Simulation Chamber [PDF]

Life, 2020
Terrestrial hot springs have emerged as strong contenders for sites that could have facilitated the origin of life. Cycling between wet and dry conditions is a key feature of these systems, which can produce both structural and chemical complexity within protocellular material.
Andrew Gangidine, Jeff R. Havig, Jeffrey S. Hannon, Andrew D. Czaja   +3 more
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