Results 61 to 70 of about 3,522 (242)

Construction Technology for Ultra-Long Composite Girders of Shenzhen Museum Using Bonded Post-Tensioning Prestressing Approach

open access: yesBuildings
Long-span prestressed structures present distinct challenges during tensioning. Their considerable length inherently induces significant tendon friction, resulting in substantial prestress loss. Additionally, prestressing operations within buildings will
Lehua Huang   +5 more
doaj   +1 more source

Cracking of the End Diaphragm of a Post-tensioned Beam Bridge

open access: yesNordic Concrete Research, 2019
In concrete beam bridges, the end diaphragm at the end of the bridge is a common structural component that connects the main beams and transfers the beam loads to the bridge bearings.
Kuusela Mikko, Asp Olli, Laaksonen Anssi
doaj   +1 more source

From Mechanics to Electronics: Influence of ALD Interlayers on the Multiaxial Electro‐Mechanical Behavior of Metal–Oxide Bilayers

open access: yesAdvanced Functional Materials, EarlyView.
Ultrathin AlOxHy interlayers between aluminum films and polymer substrates significantly improve electro‐mechanical properties of flexible thin film systems. By precisely controlling interlayer thickness using atomic layer deposition, this study identifies an optimal interlayer thickness of 5–10 nm that enhances ductility and delays cracking.
Johanna Byloff   +9 more
wiley   +1 more source

80 - Adjustable Autologous Pubovaginal Sling for Complex Recurrent Stress Incontinence

open access: yesContinence
Introduction: Prior studies have shown that autologous pubovaginal slings are efficacious for the management of stress urinary incontinence with success rates of 66% compared to 49% with Burch colposuspension.
C Mezes   +3 more
doaj   +1 more source

Hybrid GLAss-Steel Stele (HYGLASS): Preliminary Mechanical Study on a Smart Tetrahelical Cantilevering Tall Structure

open access: yesChallenging Glass Conference Proceedings, 2018
Future smart cities are demanding for new infrastructures and networks. Novel multifunctional objects should be able to acquire, store and transmit information, generate their own energy need, light up the surroundings and more.
Maurizio Froli, Francesco Laccone
doaj   +1 more source

Mimicking Block Copolymer Self‐Assembly with One‐Pot Synthesized Polyphosphoester Gradient Copolymers

open access: yesAdvanced Functional Materials, EarlyView.
Degradable Polyphosphoester (PPE) gradient copolymers (GCPs) are synthesized via one‐pot copolymerization. We show that GCPs self‐assemble into nanostructures like polymersomes, effectively mimicking the behavior of traditional BCPs. The gradient strength is key, with softer gradients favoring micelles.
Suna Azhdari   +7 more
wiley   +1 more source

Nonlinear Models of Reinforced and Post-tensioned Concrete Beams

open access: yesElectronic Journal of Structural Engineering, 2001
Commercial finite element software generally includes dedicated numerical models for the nonlinear response of concrete under loading. These models usually include a smeared crack analogy to account for the relatively poor tensile strength of concrete ...
P. Fanning
doaj  

Impregnation Technique Provides Corrosion Protection to Grouted Post-Tensioning Tendons

open access: yesMATEC Web of Conferences, 2018
Thousands of bridge structures rely on grouted post-tensioning (PT) tendons. Problems with grouting techniques and grout materials have resulted in bridges with grout voids, chloride contaminated grout and soft grout.
Whitmore David, Lasa Ivan
doaj   +1 more source

Experimental tests of post-tensioned girders strengthened with prestressed CFRP composites

open access: yesBudownictwo i Architektura, 2014
The paper presents a research carried out within the framework of the Polish-Swiss “Tulcoempa” project, carried out by Lodz University of Technology and EMPA Swiss Federal Laboratories for Materials Science and Technology.
Michał Staśkiewicz   +4 more
doaj   +1 more source

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