Results 51 to 60 of about 73,836 (303)

Effect of freeze–thaw cycling on mechanical properties of Na-montmorillonite modified EICP-treated silty sand

Case Studies in Construction Materials, 2023
Enzyme induced carbonate precipitation (EICP) has been developed as a new soil improvement technology. In this study, Na-montmorillonite (Na-Mt) was introduced into traditional EICP to improve the curing efficiency.
Hua Yuan, Qishuai Shi, Jin Li, Zhiliang Zhao   +3 more
doaj   +1 more source

Poseidon's Sanctuary at Samikon—The Discovery of an Ancient Temple Through an Integrated Geophysical and Geoarchaeological Survey Approach for Lagoonal and Swampy Environments

Archaeological Prospection, EarlyView.
ABSTRACT Below the classical fortress of Samikon at the coast of the western Peloponnese, ancient writer Strabo mentioned a sanctuary of Poseidon which served as the centre of the religious association of the Triphylian cities. In this paper, we describe the discovery and investigation of a building structure by means of geophysical and ...
Dennis Wilken, Birgitta Eder, Sarah Bäumler, Elena Appel, Peter Fischer, Tina Georg, Federica Iannone, Lena Slabon, Timo Willershäuser, Erofili‐Iris Kolia, Andreas Vött   +10 more
wiley   +1 more source

Mechanical Properties of Basalt Fiber Reinforced Cemented Silty Sand: Laboratory Tests, Statistical Analysis and Microscopic Mechanism

Applied Sciences, 2023
Benefiting from low cost, high tensile strength, chemical stability, and great resistance to temperature, alkaline, and acids, it is a reasonable and valuable technology to use basalt fiber (BF) as an admixture to optimize building materials. So far, the
Shuang Sun, Hanbing Liu, Chenglin Shi, Lina Xu, Yongqiang Sui   +4 more
doaj   +1 more source

Ensemble‐based soil liquefaction assessment: Leveraging CPT data for enhanced predictions

Civil Engineering Design, Volume 7, Issue 1, Page 23-35, March 2025.
Abstract This study focuses on predicting soil liquefaction, a critical phenomenon that can significantly impact the stability and safety of structures during seismic events. Accurate liquefaction assessment is vital for geotechnical engineering, as it informs the design and mitigation strategies needed to safeguard infrastructure and reduce the risk ...
Arsham Moayedi Far, Masoud Zare
wiley   +1 more source

Sand production behaviors during gas recovery from sandy and clayey‐silty hydrate‐bearing sediments: A comparative analysis

Energy Science & Engineering, 2022
Sand production is a crucial geotechnical issue for safe and efficient gas recovery from natural gas hydrate (NGH) reservoirs. Although the same gas production method of depressurization was chosen for the production trials in the Nankai Trough and the ...
Fulong Ning, Xiangyu Fang, Zhichao Liu, Yanjiang Yu, Yanlong Li, Linjie Wang, Hongfeng Lu, Jiaxin Sun, Xinxin Cao, Haoxian Shi   +9 more
doaj   +1 more source

Enhancement of the Plant‐Accessible Phosphate Fraction in Sewage Sludge Ashes by Na+ or K+ Addition Prior to Combustion

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The addition of Na2CO3 or K2CO3 to sewage sludge prior to combustion leads to the production of ashes containing phosphate in the form of buchwaldite‐like phases (Ca(Na/K)PO4). Compared to conventional sewage sludge mono‐ashes, such Na‐ or K‐ashes show greatly increased P‐solubilities and proved to be potent P‐fertiliser materials in greenhouse ...
Lorenz Bier‐Schorr, Viktoria Gräser, Michael Scherer‐Lorenzen, Peter Hajek, Philipp Kurz   +4 more
wiley   +1 more source

Experimental study on buoyancy and side friction of underground silos in sand and silty clay

Frontiers in Earth Science
In current anti-flotation designs for underground structures, buoyancy is typically calculated based on Archimedes’ principle and the contribution of side friction is often neglected, potentially resulting in unnecessary construction costs. In this study,
Bo Yang, Shaopeng Chen, Chengyao Zhang, Na Su, Shun Zhang, Di Zhu   +5 more
doaj   +1 more source

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

The engineering geology of the Nottingham area, UK [PDF]

, 2009
Nottingham was built near a crossing point on the River Trent in the East Midlands of England. Initially, the City developed on a low sandstone hill close to the north bank of the river, which provided a secure, well-drained location above the marshes ...
Bell, F.G., Culshaw, M.G., Forster, A., Nathanail, C.P.   +3 more
core   +1 more source

Hydraulic characteristics and model evaluation for silty sand affected by salt solution concentration

Vadose Zone Journal
The hydraulic properties of silty sand are affected by a combination of internal and external factors such as the compaction, moisture content, and groundwater properties.
Jinze Li, Hongjie Lin, Jiankun Liu
doaj   +1 more source