Results 61 to 70 of about 4,892 (215)

Antibacterial Properties of Dental Luting Agents: Potential to Hinder the Development of Secondary Caries

open access: yesInternational Journal of Dentistry, 2012
A modified direct contact test was used to evaluate the antibacterial properties of four commercially available dental luting agents (RelyX Unicem, Ketac Cem, Ceramir Crown & Bridge and Harvard Cement) and two reference materials (glass-ionomer cement ...
Erik Unosson   +5 more
doaj   +1 more source

Mechanical, rheological, and durability performances of GGBS‐based concrete for potential application to prestressed structures

open access: yesStructural Concrete, EarlyView.
Abstract Ground granulated blast‐furnace slag (GGBS) is a widely used clinker substitute in concrete, recognized for its potential to significantly reduce environmental impacts. However, its application in prestressed concrete remains limited in several countries, mainly due to concerns regarding early‐age mechanical performance and long‐term ...
D. Rolando Baldiviezo   +6 more
wiley   +1 more source

Geopolymers as a Sustainable Chemical Platform: From Building Materials to Advanced Functional Applications

open access: yesThe Chemical Record, EarlyView.
Geopolymers are presented as a chemically programmable platform whose properties emerge from activation chemistry, nanoscale disorder, and interfacial design. The review highlights sustainability challenges, the shift toward nanoengineered and hybrid systems, and the rise of halloysite‐based architectures enabling tunable structures across scales for ...
Martina Maria Calvino   +4 more
wiley   +1 more source

Improving the Radiopacity of Calcium Aluminate Cement Based Blends [PDF]

open access: yesMaterials Research, 2018
The radiopacity of CAC-based compositions containing additives (ZnO, Ag and Bi2O3) was evaluated by optical density measurements, cold crushing strength, apparent porosity, pore size distribution, in vitro apatite-formation ability (bioactivity) and cell
Ivone Regina de Oliveira   +7 more
doaj   +1 more source

In Situ X‐Ray Diffraction Study of a Microwave‐Based Hydrothermal Synthesis of Mayenite Ca12Al14O33

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
Microwave‐assisted hydrothermal synthesis enables rapid transformation of aluminium‐ and calcium‐hydroxide into mayenite with high surface area. Optimised synthesis conditions comprise a microwave step at 80°C for 5 min followed by calcination at 800°C. The reactions during calcination were studied via in situ XRD measurements.
Nils L. Kotschote   +3 more
wiley   +1 more source

Enterococcus faecalis and Endodontic Treatment Failure: A Qualitative Systematic Review of Its Role and Elimination Strategies

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT The aim of this study was to synthesize evidence on the influence of Enterococcus faecalis on endodontic treatment failure and strategies for its elimination. This study followed the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) guidelines and was registered in PROSPERO (CRD420251022741).
Francine Santos Fernandes de Lima   +1 more
wiley   +1 more source

Influence of mixing solution on characteristics of calcium aluminate cement modified with sodium polyphosphate [PDF]

open access: yes, 2020
This study investigated characteristics of a calcium aluminate cement modified with a phosphate (CAP) by changing an amount and concentration of mixing solution with sodium polyphosphate.
García-Lodeiro, Inés   +5 more
core   +1 more source

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

Characterization and separation resistance of an in-situ 2D nanocarbon/calcium aluminate composite synthesized via a combustion method

open access: yesJournal of Asian Ceramic Societies, 2021
In-situ 2D nanocarbon/calcium aluminate composite (NCAC) was synthesized via a combustion method designed based on aluminothermic reduction using calcium carbonate (CaCO3) as carbon source. The results demonstrate that compared with the pristine product,
Shoulei Yang, Guoqing Xiao, Donghai Ding
doaj   +1 more source

Study on the effect of activated coal gangue on the mechanical and hydration properties of cement

open access: yesFrontiers in Materials, 2023
This study aims to minimize the carbon emissions of cement and investigate the viability of employing activated coal gangue (CG) as an additional cementitious ingredient.
Zewen Zhu   +12 more
doaj   +1 more source

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