Results 21 to 30 of about 7,814 (231)

Vacuum mixing technology to improve the mechanical properties of ultra-high performance concrete [PDF]

open access: yes, 2015
Ultra-high performance concrete is an important evolution in concrete technology, enabled by the combination of a good particle packing density, a suitable mixing procedure and compatible binders and admixtures.
De Schutter, Geert, Dils, Jeroen
core   +2 more sources

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

Crack propagation speed in ultra high performance concrete (UHPC) [PDF]

open access: yesConstruction and Building Materials, 2016
Abstract This paper investigates crack speed in ultra-high performance concrete (UHPC) using pre-notched three-point bending specimens. The experimental parameters are fiber volume fraction and rate of loading. A hydraulic servo-controlled testing machine is used to apply lower notch tip strain rates, in the range of 0.025–1.0 1/s, while a newly ...
Pyo, Sukhoon   +2 more
openaire   +2 more sources

Experimental and Numerical Study on UHPC–RC Decks within Hogging Moment Region

open access: yesApplied Sciences, 2022
Steel–concrete composite continuous bridges can take full advantage of concrete and steel, but in regions with hogging moments, cracking of the concrete deck is a big issue affecting the durability of bridges.
Guanxu Long   +5 more
doaj   +1 more source

Effect of FC3R on the properties of ultra-high-performance concrete with recycled glass

open access: yesDyna, 2019
Ultra-high-performance concrete (UHPC) is the essential innovation in concrete research of the recent decades. However, because of the high contents of cement and silica fume used, the cost and environmental impact of UHPC is considerably higher than ...
Nancy Torres Castellanos   +2 more
doaj   +1 more source

Behavior of Hybrid Deep Beams Containing Ultra High Performance and Conventional Concretes [PDF]

open access: yesEngineering and Technology Journal, 2015
This paper presents an experimental investigation consisting of casting and testing twelve rectangular simply supported reinforced concrete deep beams. Three of the tested beams are made with conventional concrete (CC), three with ultra-high performance ...
Hassan Falah Hassan
doaj   +1 more source

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

Effect of Clay as a Nanomaterial on Corrosion Potential of Steel Reinforcement Embedded in Ultra-High Performance Concrete [PDF]

open access: yes, 2016
The effect of clay as nanomaterial or nanoclay (NC) on corrosion potential of steel reinforcement embedded in ultra-high performance concrete (UHPC) due to the early age properties of UHPC was investigated.
Hamidah, M. S.   +3 more
core   +1 more source

Ultra-high performance concrete: From fundamental to applications

open access: yesCase Studies in Construction Materials, 2018
Over the last twenty years, remarkable advances have taken place in the research and application of ultra-high performance concrete (UHPC), which exhibits excellent rheological behaviors that include workability, self-placing and self-densifying ...
N.M. Azmee, N. Shafiq
doaj   +1 more source

The Role of Iron Tailing Powder in Ultra-High-Strength Concrete Subjected to Elevated Temperatures

open access: yesAdvances in Civil Engineering, 2021
Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultra-high-performance concrete (UHPC). However, the performance of UHPC with the addition of ITP after exposure to high temperatures is more complex.
Kexin Huang   +5 more
doaj   +1 more source

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