Results 11 to 20 of about 10,976 (216)

Experimental Investigations on the Temperature Increase of Ultra-High Performance Concrete under Fatigue Loading

open access: yesApplied Sciences, 2019
Leaner, more filigree, and resource-saving constructions are the development goal of the in the building industry. In reinforced concrete construction, a ultra-high strength concrete was developed to achieve these goals.
Melchior Deutscher   +2 more
doaj   +1 more source

Ultra-High-Performance Concrete Crack Propagation Based on Fiber Random Distribution Model

open access: yesFrontiers in Materials, 2022
The tensile strength, crack behavior, and strain-hardening properties of ultra-high-performance concrete (UHPC) are mainly affected by the steel fibers distributed in the matrix. In this study, a mesoscopic model of UHPC was established using a numerical
Ziruo Yu   +3 more
doaj   +1 more source

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

Parameter analysis and design method of ultra-high performance concrete shear strengthening RC beams [PDF]

open access: yesArchives of Civil Engineering
In recent years, bridge safety accidents caused by insufficient shear bearing capacity of bridges have attracted increasing attention. The main causes include internal factors such as insufficient bridge section and deterioration of steel bars, as well ...
Jiawei Wang   +3 more
doaj   +1 more source

Cannabis through the looking glass: chemo- and enantio-selective separation of phytocannabinoids by enantioselective ultra high performance supercritical fluid chromatography [PDF]

open access: yes, 2017
By using the Inverted Chirality Columns Approach (ICCA) we have developed an enantioselective UHPSFC method to determine the enantiomeric excess (ee) of (-)-Δ(9)-THC in medicinal marijuana (Bedrocan®).
Cavazzini, A   +7 more
core   +2 more sources

Experimental investigation on UHPC shrinkage of full-scale steel-UHPC composite bridge deck

open access: yesDevelopments in the Built Environment, 2023
Three full-scale composite bridge deck segments with various steel-to-UHPC area ratios, as well as free shrinkage specimens, were tested to investigate the restrained shrinkage and cracking behaviors. Based on the measured UHPC strain and temperature, the variations in shrinkage strain were analyzed, and a time-varying analysis theory for calculating ...
Chuanxi Li   +5 more
openaire   +2 more sources

Utilizing Full UHPC Compressive Strength in Steel Reinforced UHPC Beams

open access: yesSecond International Interactive Symposium on UHPC, 2019
Steel reinforced ultra-high performance concrete (R/UHPC) flexural members commonly fail by fracture of the steel reinforcement after crack localization rather than crushing of the cement-based matrix as expected in traditional reinforced concrete. When failing after crack localization, R/UHPC specimens show low drift capacity and the high composite ...
Y. Shao, S. L. Billington
openaire   +1 more source

A simulation-based approach to evaluate objective material parameters from concrete rheometer measurements

open access: yesApplied Rheology, 2019
Modern concretes such as ultra-high performance concrete (UHPC) show excellent strength properties combined with favorable flow properties. However, the flow properties depend strongly on process parameters during production (temperature, humidity etc.),
Gerland Florian   +4 more
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

Shear strengthening of concrete T-beams with lateral layers of UHPC [PDF]

open access: yesMATEC Web of Conferences, 2022
Concrete T-beams are commonly used in building slab systems and bridge decks. They may require strengthening in shear when they are deteriorated or when loading requirements increased. This research project studied the shear behaviour of concrete T-beams
Liu Tongxu, Charron Jean-Philippe
doaj   +1 more source

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