Results 31 to 40 of about 3,626 (195)

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Mechanical properties and failure mechanism analysis of basalt-glass fibers hybrid FRP composite bars

Case Studies in Construction Materials, 2023
In order to solve the defect of insufficient performance of the single fiber reinforced plastic (FRP) bars. The basalt fibers and glass fibers are prepared into the basalt-glass fibers hybrid FRP composite bars (B/G hybrid FRP bars) in this paper.
Gang Wu, Yuhang Ren, Jinbo Du, Hongguang Wang, Xin Zhang   +4 more
doaj   +1 more source

Numerical research on anti‐dislocation measures design of deep‐buried tunnels in an anisotropic rock mass area

Deep Underground Science and Engineering, EarlyView.
This paper conducts a numerical simulation study on the construction of a deep‐buried tunnel in an anisotropic stratum area. A statistical analysis of the effects of two anti‐faulting design measures, namely, a conventional design and an articulated design, is carried out, and the results demonstrate the effectiveness of the anti‐faulting structures ...
Shiqi Liu, Huanling Wang, Yong Zhou, Zhen Wang   +3 more
wiley   +1 more source

Mechanical Behaviour of Vacuum‐Infused GFRP Composites at Elevated Temperatures—Influence of Fibre Architecture

Fire and Materials, EarlyView.
ABSTRACT This study addresses the influence of fibre architecture on the mechanical properties of vacuum‐infused glass fibre reinforced polymer (GFRP) composites at elevated temperatures (ET). Laminates with three different fibre configurations—unidirectional (UD), bidirectional 0°/90° cross‐ply (BD), and ±45° off‐axis angle‐ply (OA) – were tested in ...
Eloísa Castilho, João P. Firmo, Mário Garrido, João R. Correia, Afonso Ataíde   +4 more
wiley   +1 more source

Experimental and numerical study on the axial compression behavior of circular concrete columns confined by BFRP spirals and ties

Reviews on Advanced Materials Science
This study investigates the compression behavior of circular concrete columns confined with basalt fiber-reinforced polymer (BFRP) stirrups, comparing their performance with traditional steel-reinforced columns.
Sufian Muhammad, Rahman Muhammad, Wang Xin, Fahmy Mohamed F.M., Wu Zhishen, Moussa Amr M.A.   +5 more
doaj   +1 more source

Self-Centering Precast Unit as Energy Dissipation Members in Precast Segmental Bridge Columns

Buildings
This research aims to present a new generation of seismic-resisting systems designed for precast reinforced concrete (RC) bridge piers in modern sustainable cities to withstand moderate to high seismic activity.
Amr M. A. Moussa, Mohamed F. M. Fahmy, Fusheng Niu, Xin Wang, Zhishen Wu   +4 more
doaj   +1 more source

Study on Scale and Corrosion Inhibition Performance of Ethane-1,2-diaminium O,O'-dicyclohexyldithiophosphate

International Journal of Electrochemical Science, 2020
Ethane-1,2-diaminium O,O′-dicyclohexyldithiophosphate (Et-DDD) as novel corrosion and scale inhibitor was successfully synthesized by cyclohexanol (C6H11OH) reaction with phosphorus pentasulfide (P2S5) and ethylenediamine (H2NCH2CH2NH2) in toluene (PhCH3)
Chuan Lai, Wei Wang, Shenjiang Lv, Yuanfang Deng, Xiaoying Gan, Wan Gou   +5 more
doaj   +1 more source

Mechanical behavior of basalt fibers in a basalt-UP composite

Procedia Structural Integrity, 2016
AbstractWith the increasing interest in sustainable solutions in material design in the last decade, research on natural materials (animal, vegetal or mineral) has increased at a rapid pace. Of these materials, Basalt Fibers for composite construction provide an interesting set of mechanical properties, equal or above to those of Glass Fibers, with ...
Soares, B., Preto, R., Sousa, L., Reis, L.   +3 more
openaire   +1 more source

Identification and correlation of the Aso‐3 tephra in the Omaezaki area, central Japan: A valuable key stratum for the MIS 6/5 transition period

Journal of Quaternary Science, EarlyView.
ABSTRACT The Aso‐3 tephra is one of the most significant widespread marker layers from the Middle to Late Pleistocene, generated by a large caldera‐forming eruption at the Aso volcano in Kyushu, southwestern Japan. Despite its importance, a distal co‐ignimbrite ash correlative has yet to be clearly identified, primarily because although volcanic glass ...
Toshinori Sasaki, Takuya Morimoto, Tatsuyuki Ueno, Kazuo Mizoguchi, Norihisa Goto, Hisanori Ominami, Shohei Onaka   +6 more
wiley   +1 more source

Material-specific coefficients C1 and C2 in Williams-Landel-Ferry equations and phase transition behaviors of asphalt binder reinforced by various basalt fibers

Case Studies in Construction Materials
The Williams–Landel–Ferry (WLF) equation is critical for predicting the rheological behavior of viscoelastic materials. However, no research has reported the main parameters, C1 and C2, in WLF equations for fiber-reinforced asphalts (FRAs).
Xiao Cheng, Bin Zhong, Zhishen Wu
doaj   +1 more source