Results 31 to 40 of about 2,438 (186)

Ultra-high-performance concrete: Constituents, mechanical properties, applications and current challenges

open access: yesCase Studies in Construction Materials, 2021
Ultra-high-performance concrete (UHPC) is a new class of concrete developed in France in the 1990s with superior characteristics including high workability, high compressive strength, increased ductility, and high resistance to environmental attacks ...
Amin K. Akhnoukh, Chelsea Buckhalter
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

Effect of coarse aggregates and hybrid fibers on mechanical properties of ultra high performance concrete

open access: yes工程科学学报
The development direction of ultra high performance concrete (UHPC) is shifting toward realizing a balance between its comprehensive properties, such as low cost, high mechanical performance, and environmental friendliness, in a bid to facilitate its ...
Chen BIAN   +5 more
doaj   +1 more source

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

open access: yesStructural 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   +2 more
wiley   +1 more source

The Next Generation of UHPC

open access: yesSecond International Interactive Symposium on UHPC, 2019
In the 1980s, the laboratories of AALBORG PORTLAND A/S, in Denmark, conducted pioneering research to develop very dense cement-based binder-matrices, in order to fully exploit the performance of concrete. These efforts based on the AALBORG WHITE®Portlandcement resulted in the first ever patented ultra-high performance steel fiber ...
Carmen Maria Quist Batista   +2 more
openaire   +1 more source

Research on the design method of flexural capacity of RC beams strengthen by ultra-high-performance concrete [PDF]

open access: yesArchives of Civil Engineering
Due to the increase in traffic volume, load level, and service life of existing bridges, the bending bearing capacity of reinforced concrete beams (hereinafter referred to as RC beams) has decreased, leading to safety issues.
Jiawei Wang, Feifei Ying
doaj   +1 more source

Mix design and performance of lightweight ultra high-performance concrete

open access: yesMaterials & Design, 2022
The inferior mechanical properties and durability of conventional lightweight concrete restrict its wider application. This study intended to design a novel lightweight ultra high-performance concrete (L-UHPC) using a mathematical approach, with a view ...
Jian-Xin Lu   +3 more
doaj   +1 more source

Polymaterial Lattice Discrete Particle Model for the Optimization of Lightweight Aggregate Concrete: Intragranular Fracture and Compression Behavior

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 12, Page 4764-4779, 25 August 2026.
ABSTRACT Lightweight aggregate concrete (LWAC) offers clear advantages for sustainable construction, including reduced density and improved thermal insulation. However, its mechanical and fracture behavior is difficult to characterize due to the heterogeneity and brittle crushing of porous lightweight aggregates.
Yuhui Lyu   +7 more
wiley   +1 more source

Computational intelligence model for predicting the compressive strength of FRP‐confined concrete column

open access: yesStructural Concrete, Volume 27, Issue 3, Page 4398-4415, June 2026.
Abstract Fiber reinforced polymer (FRP) wrapping technology is commonly used to enhance the compressive strength (CS) of reinforced concrete (RC) members. Accurate prediction of the compressive strength of FRP‐confined concrete columns is crucial for optimizing structural design and helps reduce the time and costs associated with physical testing ...
XuanRui Yu   +5 more
wiley   +1 more source

Experimental investigation of the coordinated working performance of high-strength reinforcement and UHPC under varying parameters

open access: yesGrađevinar
The development of ultrahigh-performance concrete (UHPC) has prompted extensive research into the preparation and evaluation of UHPC performance. However, limited studies have explored the coordinated working performance of UHPC in conjunction with high ...
Shaofeng He, Linlin Tian, Meng Li
doaj   +1 more source

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