Pre-Stress Losses in FRP Pre-Stressed Reinforced Concrete – Subject Overview
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.
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Impedance-Based Pre-Stress Monitoring of Rock Bolts Using a Piezoceramic-Based Smart Washer—A Feasibility Study [PDF]
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
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Coulomb pre-stress and fault bends are ignored yet vital factors for earthquake triggering and hazard [PDF]
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
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Bond Strength of Fiber-Reinforced Mortar and Concrete Interface under Pre-Stress [PDF]
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
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Analytical and Numerical Study of Pre-Stress Effect in Piezoelectric Sandwich Type Ultrasonic Transducer [PDF]
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
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Strengthening and restoration of damaged reinforced concrete structures with composite plastics
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
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Influence of Pre-Stressing on Tieback Retaining Wall for Sandy Soils Excavations
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
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Prestressing Effect of Shape Memory Alloy Reinforcements under Serviceability Tensile Loads
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
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Finite element simulation of shear and compact tension tests on timber
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
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Analytical solution for pre-press transfer effect of bolt composite member
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
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