Results 31 to 40 of about 265,223 (351)

Mechanical Properties of Ultra-High Performance Concrete (UHPC) and Ultra-High Performance Fiber-Reinforced Concrete (UHPFRC) with Recycled Sand

open access: yesInternational Journal of Concrete Structures and Materials, 2023
Use of high-cost raw materials such as quartz sand can limit wider application of ultra-high performance concrete in concrete construction. In this experimental study, recycled sand was used to fabricate ultra-high performance concrete (UHPC) and ultra ...
Donguk Choi   +4 more
doaj   +1 more source

Sustainable construction through eco-efficient ultra-high performance concrete [PDF]

open access: yes, 2016
An innovative type of steel-fibre reinforced ultra-high performance concrete (UHPC), including its constituent materials and its mixing procedure, is reviewed in this paper.
Camões, Aires, Ferdosian, I.
core   +1 more source

Ultra-High-Performance Concrete Shear Keys in Concrete Bridge Superstructures [PDF]

open access: yesMATEC Web of Conferences, 2019
Many existing bridges have adjacent girders that utilize grouted shear keys to transfer loads laterally across the superstructure. Cracking and leaking often cause degradation of the shear key and the girder.
Flores Elsy Y.   +3 more
doaj   +1 more source

High-Power Fiber Laser Cutting for 50-mm-Thick Cement-Based Materials [PDF]

open access: yes, 2020
This experimental research highlights the applicability of laser cutting to cement-based materials using multimode fiber lasers. A 9 kW multimode fiber laser is used, and the experimental variables are the water-to-cement ratio, laser speed, and material
Lee, Dongkyoung   +2 more
core   +1 more source

Self-sensing ultra-high performance concrete: a review

open access: yesMeasurement Science and Technology, 2023
Abstract Ultra-high performance concrete (UHPC) is an innovative cementitious composite, that has been widely applied in numerous structural projects because of its superior mechanical properties and durability. However, ensuring the safety of UHPC structures necessitates an urgent need for technology to continuously monitor and ...
Yixuan Guo   +4 more
openaire   +2 more sources

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

open access: yes, 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 ...
A. Akhnoukh, Chelsea Buckhalter
semanticscholar   +1 more source

The Role of Supplementary Cementitious Materials (SCMs) in Ultra High Performance Concrete (UHPC): A Review

open access: yesMaterials, 2021
Although ultra high-performance concrete (UHPC) has great performance in strength and durability, it has a disadvantage in the environmental aspect; it contains a large amount of cement that is responsible for a high amount of CO2 emissions from UHPC ...
Sungwoo Park   +3 more
semanticscholar   +1 more source

Ultra-high-performance concrete: Impacts of steel fibre shape and content on flowability, compressive strength and modulus of rupture

open access: yesCase Studies in Construction Materials, 2022
The impact of three-shaped steel fibres (straight, hooked end, and corrugated) with varying steel fibre (SF) contents (0.75 %, 1.5 %, and 2.5 % by volume fraction) on the fresh and mechanical characteristics of ultra-high-performance concrete was ...
Bassam A. Tayeh   +3 more
doaj   +1 more source

Corrosion-fatigue synergy in steel bridges: Mechanisms and mechanical degradation

open access: yesResults in Engineering
This study pioneers the investigation of asynchronous corrosion-fatigue coupling effects on structural steel degradation, addressing a critical gap in understanding synergistic damage mechanisms under combined environmental and mechanical stresses ...
Lizhen Huang   +6 more
doaj   +1 more source

Improved forecasting of the compressive strength of ultra‐high‐performance concrete (UHPC) via the CatBoost model optimized with different algorithms

open access: yesStructural Concrete
This paper focuses on the applicability of CatBoost models constructed using various optimization techniques for improved forecasting the compressive strength of ultra‐high‐performance concrete (UHPC).
M. Katlav, Faruk Ergen
semanticscholar   +1 more source

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