Results 1 to 10 of about 380 (177)
State-of-the-Art Review on Determining Prestress Losses in Prestressed Concrete Girders [PDF]
Applied Sciences, 2020 Prestressing methods were used to realize long-span bridges in the last few decades. For their predictive maintenance, devices and dynamic nondestructive procedures for identifying prestress losses were mainly developed since serviceability and safety of
Marco Bonopera +2 more
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Buildings, 2023 Despite the potential advantages of 18 mm strands, the limited research on the behavior of girders with larger-diameter strands hinders the application in bridges. Transfer length and prestress losses are two important indicators.
Xin Jiang +6 more
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Prestress losses evaluation in prestressed concrete prismatic specimens [PDF]
Engineering Structures, 2013 Funding for this experimental research work has been provided by the Spanish Ministry of Education and Science and ERDF (Project BIA2006-05521 and Project BIA2009-12722). Tests have been conducted at the Institute of Concrete Science and Technology (ICI-TECH), at the Universitat Politecnica de Valencia (Spain).
Pedro Serna, J R Martí-Vargas
exaly +3 more sources
Monitoring and Analysis of Prestress Loss in Prestressed Box Girder Bridges Strengthened with External Prestressing. [PDF]
Sensors (Basel)To investigate the effects of long-term prestress loss on concrete box girders strengthened with external prestressing, a large-span box girder, in service for over 20 years and strengthened with external prestressing, was monitored for four months. Prestress loss in the longitudinal, vertical, and transverse directions of the box girder was calculated
Guo H, Yang J, Tang R, Yang C, Xu F.
europepmc +4 more sources
Buildings, 2023 Prestressing plays a pivotal role in ensuring the tightness and integrity of prestressed concrete containment in nuclear power plants. The prestress loss reduces the compressive stress in concrete resulting from the prestressing strands and increases the
Xingyi Wu +3 more
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Effect of Prestress Levels and Jacking Methods on Friction Losses in Curved Prestressed Tendons
Applied Sciences, 2017 The effects of prestressing methods and prestress levels on the friction losses of prestressed tendons were evaluated in this study. Two full-scale prestressed concrete girders were fabricated and used for the friction loss experiment.
Sungnam Hong
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Experimental Evaluation of Shrinkage, Creep and Prestress Losses in Lightweight Aggregate Concrete with Sintered Fly Ash [PDF]
Materials, 2021 Barbara Łabużek, Rafał Szydłowski
exaly +2 more sources
Engineering Structures and Technologies, 2014 Article briefly discusses the factors affecting bond between concrete and reinforcement of prestressed concrete member. Behavior of prestressed concrete member during release of reinforcement is discussed.
Aidas Jokūbaitis +2 more
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Case Studies in Construction Materials, 2023 Using prestressed carbon fiber reinforced polymers (CFRPs) is a promising technique for strengthening reinforced concrete (RC) structures. This study aimed to investigate the prestress losses and flexural behavior of strengthened RC beams under wetting ...
Xiaoda Li +3 more
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Prestress loss of prestressing tendons with asymmetrical layout parabolas [PDF]
Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015, 2015 According to the equilibrium condition of geometry relationship, we derived the formulas that can be used to calculate the loss of prestress of prestressing tendons with the double-end tensioning and the asymmetrical arrangement parabolic curves.
Xiuxin Wang, Shanwen Zhang
openaire +1 more source