Results 41 to 50 of about 21,816,540 (217)

Comparative research: Early-age deformation of alkali-activated/cement-based ultra-high performance concrete

open access: yesCase Studies in Construction Materials
Alkali activated slag ultra-high performance concrete (AAS-UHPC) is a promising low-carbon cementitious material that can effectively utilize industrial solid waste and reduce pollutant emissions during the production of cementitious materials compared ...
Weijie You   +10 more
doaj   +1 more source

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

open access: yesStructural 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   +3 more
wiley   +1 more source

Design and Evaluation of a Single-Span Bridge Using Ultra- High Performance Concrete;TR-529, September 2009 [PDF]

open access: yes, 2009
Research presented herein describes an application of a newly developed material called Ultra-High Performance Concrete (UHPC) to a single-span bridge. The two primary objectives of this research were to develop a shear design procedure for possible code

core  

Contribution of dowel action to interfacial shear transfer in flat joints with unbonded posttensioned bars for precast segmental bridges

open access: yesStructural Concrete, EarlyView.
Abstract Dry joints are widely used in precast segmental bridge construction because they simplify assembly and accelerate erection. Incorporating fasteners crossing flat dry joints represents an innovative configuration for this type of connection.
Rogelio Franco Segarra   +3 more
wiley   +1 more source

Design Guide for Precast UHPC Waffle Deck Panel System, including Connections, June 2013 [PDF]

open access: yes, 2013
: As a part of an innovation project funded by the Federal Highway Administration (FHWA) Highways for LIFE program, a full-depth precast, ultra-high-performance concrete (UHPC) waffle deck panel and appropriate connections suitable for field ...

core  

Impact on structural Ultra High Performance Concrete (UHPC) elements in high-rise buildings

open access: yes, 2022
S.759 ...
Riedel, W.   +3 more
core  

Comparative Study on Shear Reinforcement Performance of Prestressed Concrete Hollow Slab Beams in Existing Highways

open access: yesEngineering Reports, Volume 8, Issue 10, October 2026.
Insufficient shear resistance exists at the supports of old prestressed hollow slab beams in expressway reconstruction and expansion. Three full‐scale reinforcement tests show the combined stiffening ring hoop ranks best with a 25.8% increase, followed by diagonal reinforcement at 19.9% and vertical reinforcement at 15%, each suitable for different ...
Changrong Lü   +4 more
wiley   +1 more source

Optimized performance of ultra-high performance concrete bridge connections

open access: yes, 2022
Head, Monique H.In this study, research is presented on the structural performance and evaluation of two separate UHPC mixes (one proprietary mix and one non-proprietary mix) using methods to quantify their performance especially as it pertains to UHPC ...
Dennis, Tyler E.
core   +1 more source

Split‐disk testing of precast ultra‐high performance fiber‐reinforced concrete tubes

open access: yesStructural Concrete, Volume 27, Issue 5, Page 7048-7065, October 2026.
Abstract Ultra‐high performance fiber‐reinforced concrete (UHPFRC) has great potential for structural applications involving precast cylindrical shapes, including pipes, silos and stay‐in‐place forms for concrete columns. This study examines the performance of UHPFRC rings under internal pressure simulated using the split‐disk loading method, along ...
Mina Fakeh, Amir Fam
wiley   +1 more source

Experimental and theoretical study on flexural performance of concrete beams strengthened by unbonded prestressed ultra-high performance concrete layer

open access: yesScientific Reports
Ultra High Performance Concrete (UHPC) has the advantages of high strength and good durability. The new technology of unbonded prestressed UHPC to strengthen ordinary concrete beams can give full play to the performance of prestressed “high efficiency ...
Fan Feng, Pan Zuanfeng, Pan Hongcai
doaj   +1 more source

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