Results 61 to 70 of about 1,707 (203)

Identification of invisible damage in prestressed concrete bridges—A demonstrator case using coda wave interferometry

Structural Concrete, EarlyView.
Abstract During their life cycle, prestressed concrete bridges are prone to wire breaks of their tendons due to fatigue or stress corrosion cracking. However, not all structures show visible cracking on the surface, which would provide timely warning of otherwise invisible damage. Brittle failure may occur.
Noah Sträter, Felix Clauß, Mark Alexander Ahrens, Peter Mark   +3 more
wiley   +1 more source

Durability performance of a high‐performance fiber‐reinforced concrete for bridge applications

Structural Concrete, EarlyView.
Abstract This paper investigates the durability performance of a coarse‐aggregate high‐performance fiber‐reinforced concrete (HPFRC) developed as a cost‐efficient material solution for precast bridge applications. A comprehensive experimental program was conducted to assess the resistance of the material to the principal deterioration mechanisms ...
Rolando Baldiviezo, Rafael Ruiz, Borja Regúlez, Carmen Andrade, Hugo Corres, Valle Chozas‐Ligero, Leonardo Todisco   +6 more
wiley   +1 more source

Stability of Cement Grout: Study of Sedimentation Phenomena

Applied Rheology, 2002
The grouts are suspensions containing cement used in the technique of prestressing by post-tension. Cement, from its chemical nature, protects the wire ropes (strands) from corrosion.
Gelade Pierre, Le Roy Robert, Boucenna Imane, Flaud Patrice   +3 more
doaj   +1 more source

Experimental Investigation into the Seismic Performance of Fully Grouted Concrete Masonry Walls Using New Prestressing Technology

Applied Sciences, 2019
In recent years, traditional masonry structures have been widely used in rural areas of China. However, they were found to have a poor seismic performance during earthquakes.
Bin Chi, Xu Yang, Fenglai Wang, Zhiming Zhang, Yuhu Quan   +4 more
doaj   +1 more source

Mechanical, rheological, and durability performances of GGBS‐based concrete for potential application to prestressed structures

Structural Concrete, EarlyView.
Abstract Ground granulated blast‐furnace slag (GGBS) is a widely used clinker substitute in concrete, recognized for its potential to significantly reduce environmental impacts. However, its application in prestressed concrete remains limited in several countries, mainly due to concerns regarding early‐age mechanical performance and long‐term ...
D. Rolando Baldiviezo, Leonardo Todisco, Cristina Argiz, Carmen Andrade, Amparo Moragues, Jaime C. Gálvez, Hugo Corres   +6 more
wiley   +1 more source

Prediction model for development length of corroded prestressing strand considering rotation-affected bond failure mechanism

KSCE Journal of Civil Engineering
Evaluation of corrosion’s effect on the development length of prestressing strand is crucial for pretensioned prestressed concrete structures serving in the aggressive environment.
Ju Yi, Lei Wang, Ming Deng, Guodong Wang
doaj   +1 more source

Recent research work resulting in IMS building technology improvements [PDF]

Constructii: Journal of Civil Engineering Research, 2013
IMS Building Technology is based on pre-fabricated concrete elements of the structure, assembled on-site and joined using prestressing. This construction method, developed in 1950s and implemented worldwide, is still in use.
Goran PETROVIĆ, Nebojša MILOVANOVIĆ
doaj  

Structural health monitoring methods for the evaluation of prestressing forces and pre-release cracks

Frontiers in Built Environment, 2016
Prestressed concrete bridges currently account for 45% of bridges built in the last five years in the United States. This has resulted in an increase in the number of deficient bridges composed of prestressed concrete, which requires a better ...
Hiba Abdel-Jaber, Branko Glisic
doaj   +1 more source

Effective axial strength of laterally strengthened RC pier heads with post‐tensioning method

Structural Concrete, EarlyView.
Abstract This study investigates the structural performance enhancement of reinforced concrete (RC) pier heads laterally strengthened with unbonded post‐tensioning (PT) to accommodate increased design loads following a deck replacement of an existing railway bridge.
Yujae Seo, Hyunjin Ju, Benjamin Täubling‐Fruleux, Alfred Strauss   +3 more
wiley   +1 more source

Tests and Analysis on Thermal Expansion Behaviour of Steel Strand used in Prestressed Concrete Structure under Low Temperatures

International Journal of Concrete Structures and Materials, 2018
This paper presents the results of the tests and analysis on the coefficient of thermal expansion for the steel strand under combined low temperatures and prestressing forces.
Jian Xie, Jia-Bao Yan
doaj   +1 more source