Results 1 to 10 of about 2,682,010 (187)

Tensile Behavior of Basalt-Fiber-Grid-Reinforced Mortar before and after Exposure to Elevated Temperature

Buildings, 2022
This paper presents an experimental study on the tensile behavior of basalt-fiber-grid-reinforced mortar (BGRM) before and after exposure to an elevated temperature of 300 °C considering the effect of fiber grid type, short polyvinyl alcohol fiber (PVA),
Xiaofei Zhang, Weidong He, Yongwang Zhang, Cheng Chen, Xun Wu   +4 more
doaj   +1 more source

Effect of Degradation on Collapse Margin Ratio of Steel Moment Frames [PDF]

Journal of Rehabilitation in Civil Engineering, 2019
Although several studies have investigated the effect of degradation on the behavior of structures, inspections on collapse margin ratios are rare in the literature.
Saeid Bazvand, Ehsan Darvishan, Gholamreza Ghodrati Amiri   +2 more
doaj   +1 more source

Modelling of CFRP-Strengthened RC Shear Walls with a Focus on End-Anchor Effects

Buildings, 2023
This study first provides an overview of the development of a novel tube anchor system for the seismic strengthening or repair of reinforced concrete (RC) shear walls with carbon fibre-reinforced polymer (CFRP) sheets.
Vahid Sadeghian, Said Ali Said, David Lau   +2 more
doaj   +1 more source

Degradation mechanism of shear strength and compressive strength of red sandstone in drawdown areas during reservoir operation

Yantu gongcheng xuebao, 2019
So far, the researches on the degradation of macroscopic strength of rock under cyclic wetting-drying conditions in the course of reservoir operation mainly focus on simulations of single environmental conditions without considering the combined actions ...
ZHANG Zhen-hua , WANG Ye
doaj   +1 more source

Failure Mechanisms of Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ Membranes after Pilot Module Operation

Membranes, 2022
The step from the testing of oxygen transport membranes on a lab scale to long-term operation on a large scale is a challenge. In a previous study, membrane failure was observed at defined positions of one end of the cooled tubular Ba0.5Sr0.5Co0.8Fe0.2O3−
Simone Herzog, Chao Liu, Nicolas Nauels, Anke Kaletsch, Christoph Broeckmann   +4 more
doaj   +1 more source

Physics-Based Shear-Strength Degradation Model of Stud Connector with the Fatigue Cumulative Damage

Buildings, 2022
In the whole lifetime of structures, fatigue damage accumulation will exist in the shear connector of steel–concrete composite beams. It is essential to determine the residual mechanical properties of shear connectors under long-term fatigue loads, e.g.,
Xiao-Wei Zheng, Heng-Lin Lv, Hong Fan, Yan-Bing Zhou   +3 more
doaj   +1 more source

Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission

Applied Sciences, 2020
As common conductive materials, Al wires are used on overhead transmission lines under long-term heating conditions. In this study, the strength degradation behavior and the strength-electrical conductivity relation of the commercially pure Al wires ...
Rui Li, Hanzhong Liu, Heng Ma, Jiapeng Hou, Liqun Qian, Qiang Wang, Xiaowu Li, Zhefeng Zhang   +7 more
doaj   +1 more source

Estimation of strength degradation for engineering plastic (Under elevated temperature and humidity stress test)

Nihon Kikai Gakkai ronbunshu, 2019
A large quantity of engineering plastics are used in electric industrial products. It is necessary to estimate the life of the product made of engineering plastics because of its shorter life and lower strength than some of ceramics or metals.
Yuko SAWADA, Daisuke ECHIZENYA
doaj   +1 more source

Influence of Reinforcing Steel Corrosion on Life Cycle Reliability Assessment of Existing R.C. Buildings

Buildings, 2020
Time-dependent reliability assessment is a crucial aspect of the decision process for rehabilitation of existing reinforced concrete structures. Since the assessment strongly depends on degradation of materials with time, the paper focuses on the ...
Pietro Croce, Paolo Formichi, Filippo Landi   +2 more
doaj   +1 more source

Mechanism and prediction of anchor rod strength degradation with deep mine high-stress corrosion environment

Meitan xuebao
Deep coal mining, in addition to facing the three “high” and one “disturbance”, faces a high-stress corrosion environment formed by underground corrosive atmosphere, high stress, strong disturbance, and other factors.
Meng WANG, Sitao ZHU, Shidong LI, Dongdong LI, Fuxing JIANG, Xiufeng ZHANG, Yang CHEN, Xiangge MENG   +7 more
doaj   +1 more source