Results 31 to 40 of about 4,303 (287)
Buildings, 2023 Civil engineering faces a substantial challenge when dealing with soft and compressible clayey soils. Conventional soil stabilization techniques involving ordinary Portland cement (OPC) result in notable CO2 emissions. This study explores the utilization
Arailym Mustafayeva +5 more
doaj +1 more source
Studies on a Piezoelectric Cylindrical Transducer for Borehole Dipole Acoustic Measurements
Applied Sciences, 2021 In this article, a novel design of a piezoelectric dipole transducer is proposed for formation acoustic velocity measurement in the vicinity of a borehole with a frequency range of 0.4–6 kHz.
Yinqiu Zhou, Xiuming Wang, Yuyu Dai
doaj +1 more source
Analysis of Bender Element signals during triaxial testing
Revista Facultad de Ingeniería Universidad de Antioquia, 2015 Este artículo presenta y discute tres métodos para evaluar la velocidad de la onda cortante, Vs, con base en el análisis de señales de “Bender Elements” (BE) tomadas durante ensayos triaxiales. Los métodos de tiempo de viaje de pico-a-pico (peak-to-peak travel time), correlación cruzada (cross-correlation) y fase retrasada (phase-delay) fueron ...
Kim, Taesik +2 more
openaire +6 more sources
EVALUATION OF DEFORMATION CHARACTERISTICS OF SOIL BY BENDER ELEMENT TEST
Doboku Gakkai Ronbunshu, 2003 ベンダーエレメント試験 (以下BE試験) の受信波によって, 土の減衰振動ならびに共振を観察することができるという仮定に基づき, 共振法土質試験の理論を援用して2通りの方法でせん断弾性係数および減衰比を求める手法を示している. 粘土, 泥炭試料についての実験結果からこれらの方法によって求めたせん断弾性係数の値は, せん断波の到達時刻を受信波のピーク点で定義した場合よりは (試料によって3～7倍) 大きな値となること, また, 減衰比についてはBE試験による既往の報告例はないが, 繰返し三軸試験によって従来報告されている値と近いことを示している. これらの結果をふまえ, 従来の方法に加えて本研究で提案する2通りの方法を併用することにより, BE試験の活用範囲がさらに広がることを示唆している.
Toshihiro OGINO +3 more
openaire +2 more sources
Transportation EngineeringThe bender element (BE) test is widely employed in geotechnical engineering for measuring the shear wave velocity (Vs) and, consequently, the small-strain shear modulus (G0), due to its ease of application, integration into geotechnical devices, and ...
Ionuţ Dragoş Moldovan +3 more
doaj +1 more source
Yantu gongcheng xuebaoTo enable real-time monitoring and evaluation of the soil stiffness characteristics, a bender element array system suitable for model testing has been developed. The system is based on a PLC control unit and employs a multi-channel switching architecture
HU Anfeng 1, 2, CHEN Yiyang 1, 2, WU Juntao 1, 2, WANG Jinchang 3, XIAO Zhirong 4
doaj +1 more source
Local Stiffness Assessment of Geogrid-Stabilized Unbound Aggregates in a Large-Scale Testbed
Applied Sciences, 2023 This paper integrates and extends an earlier article presented at the 20th International Conference on Soil Mechanics and Geotechnical Engineering. The generation of a stiffened zone in the proximity of a geogrid is one of the primary mechanisms of ...
Mingu Kang +4 more
doaj +1 more source
Shear modules of claysand mixtures using bender element test
Acta geotechnica slovenica, 2018 Na glineno peščenih mešanicah so bili izvedeni preizkusi z benderjevim elementom (BE). Z njimi se je raziskalo spreminjanje strižnega modula majhnih deformacij (Gmax) v odvisnosti od vsebnosti peska in fizikalnih karakteristik zrn peskov (velikosti, oblike) v preiskovanih mešanicah. Tri različne granulacije peskov (0.6-0.3 mm, 1.0-0.6 mm in 2.0-1.0 mm)
Cabalar, Ali Firat +2 more
openaire +3 more sources
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source
A modified rowe cell with bender elements for small strain shear modulus measurements
This is the accepted version of an article published in Geotechnical testing journal, Copyright 2024, ASTM International, West Conshohocken, PA, DOI: 10.1520/GTJ20230329, 985-1005, go.astm.org/pubs.The small strain shear modulus (G0) is an important ...
Castellanza, Riccardo +6 more
core +3 more sources