Results 1 to 10 of about 1,058,557 (263)

Pre-Stress Losses in FRP Pre-Stressed Reinforced Concrete – Subject Overview

open access: yesArchives of Civil Engineering, 2018
Fiber reinforced polymers (FRPs) due to their specific high-strength properties become more and more popular and replace traditional structural materials like conventional steel in prestressed concrete structures. FRP reinforced structures are relatively
Przygocka M., Kotynia R.
doaj   +2 more sources

Impedance-Based Pre-Stress Monitoring of Rock Bolts Using a Piezoceramic-Based Smart Washer—A Feasibility Study [PDF]

open access: yesSensors, 2017
Pre-stress degradation or looseness of rock bolts in mining or tunnel engineering threatens the stability and reliability of the structures. In this paper, an innovative piezoelectric device named a “smart washer” with the impedance method is proposed ...
Bo Wang   +4 more
doaj   +2 more sources

Coulomb pre-stress and fault bends are ignored yet vital factors for earthquake triggering and hazard [PDF]

open access: yesNature Communications, 2019
Scattered earthquake locations in the same region cannot be explained solely by coseismic Coulomb stress on planar faults. Instead, the authors suggest Coulomb pre-stress to influence earthquake locations.
Z. K. Mildon   +3 more
doaj   +2 more sources

Bond Strength of Fiber-Reinforced Mortar and Concrete Interface under Pre-Stress [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2023
Shrinkage and improper compaction of the repair layer are among the main reasons for the adhesion drop. Shrinkage results in cracking and improper compaction causes fine pores in the interface.
Ali Saberi Varzaneh, Mahmoud Naderi
doaj   +1 more source

Analytical and Numerical Study of Pre-Stress Effect in Piezoelectric Sandwich Type Ultrasonic Transducer [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2021
In this paper, the effect of pre-stress condition on the resonance frequency of the transducer is studied by using numerical and analytical methods. To compare the obtained results, two sandwich-type transducers with nominal frequency of 25 kHz and 30 ...
Hamidreza Nadri, Mahdi Shaban, Abbas Pak
doaj   +1 more source

Strengthening and restoration of damaged reinforced concrete structures with composite plastics

open access: yesMagazine of Civil Engineering, 2023
This paper considers directions to devise methods for restoring the operational suitability of reinforced concrete structures. Mistakes of designers and non-compliance with the concreting technology of monolithic reinforced concrete structures lead to ...
Mukhanbetzhanova Zhanna
doaj   +1 more source

Influence of Pre-Stressing on Tieback Retaining Wall for Sandy Soils Excavations

open access: yesJournal of the Civil Engineering Forum, 2021
Pre-stressed ground anchor systems or tieback systems are commonly used at wide and irregular-shaped excavations, with the advantage of lower cost and ease of construction compared to the braced excavations, but they come with the drawback on permits for
Anthonius Steven Sutanto   +2 more
doaj   +1 more source

Prestressing Effect of Shape Memory Alloy Reinforcements under Serviceability Tensile Loads

open access: yesBuildings, 2021
Repairing and strengthening of existing aged steel-reinforced concrete structures is a major challenge. Today, much of the repair work completed is insufficient and brittle.
Markus Beßling   +2 more
doaj   +1 more source

Finite element simulation of shear and compact tension tests on timber

open access: yesActa Polytechnica CTU Proceedings, 2022
The non-linear finite element simulation of the ASTM shear and pre-stressed compact tension tests was conducted. Tested specimens were cut from the glued laminated timber made of European spruce (Picea abies) with the lamina thickness of 10.5 mm and 45 ...
Eliška Šmídová, Petr Kabele
doaj   +1 more source

Analytical solution for pre-press transfer effect of bolt composite member

open access: yesMeikuang Anquan, 2021
In order to study the pre-press transfer effect of bolt composite member, assume that the roadway surrounding rock is elastic foundation, take the roof as an example, the elastic foundation beam model of the roof which is supported by pre-stress bolt ...
JIANG Wei, QU Hao, SHI Meng, WANG Dongpan
doaj   +1 more source

Home - About - Disclaimer - Privacy