Results 161 to 170 of about 9,441 (308)

Design and Performance Verifcation of Ultra-High Performance Concrete Piles for Deep Foundations Final Report, November 2008

, 2008
The strategic plan for bridge engineering issued by AASHTO in 2005 identified extending the service life and optimizing structural systems of bridges in the United States as two grand challenges in bridge engineering, with the objective of producing ...

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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

Double Feedback Control Method for Determining Early-Age Restrained Creep of Concrete Using a Temperature Stress Testing Machine. [PDF]

Materials (Basel), 2018
Zhu H, Li Q, Hu Y, Ma R.
europepmc   +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

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

Concrete with a very high number of load cycles—Identification of stress levels for efficient investigation of fatigue behavior

Structural Concrete, EarlyView.
Abstract Fatigue stresses are receiving increasing attention in structural engineering, particularly in the design of increasingly slender structures. However, the mechanical response of concrete—particularly its fatigue behavior under very high numbers of load cycles—is still scarcely understood.
Kerstin Willers, Lutz Gerlach, Frank Dehn   +2 more
wiley   +1 more source

Mutual effects between creep, connection deformability and shear-lag in steel-concrete composite bridges

, 2001
Based on a theoretical model, recently proposed by the authors for the viscoelastic analysis of composite steel-concrete beams, a further analysis is developed to investigate numerically the mutual influence between concrete creep, connection ...
GARA, Fabrizio, A. M. Tarantino, G. Leoni   +2 more
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Digital Engineering Transformation as a Sociotechnical Challenge: Categorization of Barriers and Their Mapping to DoD's Policy Goals

Systems Engineering, EarlyView.
ABSTRACT Digital Engineering (DE) transformation represents a paradigm shift in systems engineering (SE), aiming to integrate heterogeneous analytical models and digital artifacts into an authoritative source of truth to improve traceability and lifecycle management.
Md Doulotuzzaman Xames, Taylan G. Topcu
wiley   +1 more source

Printing to Fight Antimicrobial Resistance Through Nano/Microstructured Platforms

The Chemical Record, EarlyView.
Additive manufacturing enables the rational design of structured antimicrobial platforms across multiple length scales, from nanofibrous scaffolds and droplet microreactors to 3D and 4D printed constructs. By engineering confinement, interfacial chemistry, and stimuli‐responsive release, these systems exert localized action through complementary ...
Giorgia Puleo, Silvia Orecchio, Dario Savoca, Claudia Pellerito, Vittorio Ferrara, Vincenzo Piscopo, Sebastiano Alberto Fortuna, Alessandra Giardina, Bruno Pignataro, Paola Costanzo, Floriana Campanile, Giuseppe Arrabito   +11 more
wiley   +1 more source

Tensile relaxation of bonded concrete overlays

, 2009
Includes abstract.Includes bibliographical references (leaves 131-135).Restrained shrinkage in bonded concrete overlays can cause stress build up, cracking and even debonding. Tensile relaxation is the main mechanism of stress relief in concrete overlays.
Masuku, Crispen
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