Results 1 to 10 of about 10,030 (149)

Effect of Graphene Oxide Nanosheets on Physical Properties of Ultra-High-Performance Concrete with High Volume Supplementary Cementitious Materials [PDF]

open access: yes, 2020
Nanomaterials have been increasingly employed for improving the mechanical properties and durability of ultra-high-performance concrete (UHPC) with high volume supplementary cementitious materials (SCMs).
Lambert, Paul   +4 more
core   +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

Experimental Investigation on Hydroabrasive Erosion of Steel Fiber UHPC and Rubber UHPC [PDF]

open access: yesAdvances in Materials Science and Engineering, 2020
Steel fiber ultrahigh performance concrete (UHPC) and rubber ultrahigh performance concrete (UHPC) adopt the methods of “rigidity overcomes rigidity” and “softness overcomes rigidity,” respectively, to resist the abrasion and cavitation erosion caused by water flow carrying large solid particles.
Shuangxi Li   +3 more
openaire   +2 more sources

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

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

Microstructural Characteristics of Cement-Based Materials Fabricated Using Multi-Mode Fiber Laser [PDF]

open access: yes, 2020
Cement-based materials are the most prevalent construction materials, and the conventional cutting techniques are still mostly used for fabricating the materials.
Lee, Dongkyoung   +2 more
core   +1 more source

A 2-pyridone-amide inhibitor targets the glucose metabolism pathway of Chlamydia trachomatis. [PDF]

open access: yes, 2014
UnlabelledIn a screen for compounds that inhibit infectivity of the obligate intracellular pathogen Chlamydia trachomatis, we identified the 2-pyridone amide KSK120.
Almqvist, Fredrik   +12 more
core   +4 more sources

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

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