Results 111 to 120 of about 204,898 (308)

Study of hydration of cement pastes added with used catalytic cracking catalyst (FCC) from a colombian refinery

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2013
This paper analyzes the effect of the incorporation of industrial waste from an oil refinery in Colombia, known as used catalytic cracking catalyst (FCC), in the hydration process of cementitious pastes. For this purpose, ordinary Portland cement pastes
Jenny Johanna Trochez   +2 more
doaj   +1 more source

Development and experimental validation of an overlay mortar with biocide activity [PDF]

open access: yes, 2016
Biodeterioration of concrete by microorganism colonisation may be a problem in several structures, especially in irrigation and hydroelectric canals.
Aguado de Cea, Antonio   +4 more
core   +2 more sources

Complex Cryptographic and User‐Centric Physically Unclonable Functions Enabled by Strain‐Sensitive Nanocrystals via Selective Ligand Exchange

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates electromechanical PUFs that improve on traditional electric PUFs. The electron transport materials are coated randomly through selective ligand exchange. It produces multiple keys and a key with motion dependent on percolation and strain, and approaches almost ideal inter‐ and intra‐hamming distances.
Seungshin Lim   +7 more
wiley   +1 more source

Preliminary Investigation of Pozzolanic Properties of Calcined Waste Kaolin

open access: yesMedžiagotyra, 2018
Current research aims to investigate the influence of calcination temperature on the pozzolanic activity of the waste kaolin and the impact of calcination products on Portland cement hydration.
Yang HUANG   +4 more
doaj   +1 more source

Use of Hydration Inhibitors to Improve Bond Durability of Aluminum Adhesive Joints [PDF]

open access: yes, 1985
An investigation is conducted of the mechanisms by which nitrilotris methylene phosphonic acid (NTMP) and related compounds are adsorbed onto oxidized aluminum surfaces to inhibit hydration and increase the durability of adhesive bonds formed with ...
Ahearn, J. S.   +3 more
core   +1 more source

Light‐Responsive Enzyme‐Loaded Nanoparticles for Tunable Adhesion and Mechanical Wound Contraction

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a photoactivatable enzyme‐loaded mesoporous nanoparticle system (MPDA_PaTy) that enables light‐triggered tunable tissue adhesion and facilitates mechanical wound contraction. Controlled enzymatic crosslinking at tissue or hydrogel interfaces allows on‐demand adhesion.
Junghyeon Ko   +10 more
wiley   +1 more source

Study on Preparation of Autoclaved Aerated Concrete Using Lead-Zinc Tailings

open access: yesChemical Engineering Transactions, 2017
For comprehensive utilization of solid wastes, the autoclaved aerated concrete (ACC) were prepared by using lead-zinc tailings (LZT) as mainly siliceous materials.
Changlong Wang   +4 more
doaj   +1 more source

Effect of Additives on Mineral Trioxide Aggregate Setting Reaction Product Formation [PDF]

open access: yes, 2015
Introduction Mineral trioxide aggregate (MTA) sets via hydration of calcium silicates to yield calcium silicate hydrates and calcium hydroxide (Ca[OH]2). However, a drawback of MTA is its long setting time.
Berzins, David W.   +2 more
core   +1 more source

Tailoring the Properties of Functional Materials With N‐Oxides

open access: yesAdvanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich   +5 more
wiley   +1 more source

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