Results 121 to 130 of about 61,202 (318)
Understanding silicate hydration from quantitative analyses of hydrating tricalcium silicates
Nature Communications, 2016 Despite its importance to the cement industry, tricalcium silicate hydration, with its sequence of induction, acceleration and deceleration steps, still hosts many open questions.
Elizaveta Pustovgar +6 more
doaj +1 more source
Australian Endodontic Journal, EarlyView.ABSTRACT The sealing performance of endodontic sealers may be influenced by environmental factors such as pH and blood‐derived proteins. This in vitro study evaluated the effects of pH variation and protein contamination on calcium ion (Ca2+) release and push‐out bond strength (BS) of a calcium silicate‐based sealer (Bio‐C Sealer) and an epoxy resin ...
Walter Raucci‐Neto +6 more
wiley +1 more source
Case Studies in Construction MaterialsThe present study evaluates the impact of calcium compounds on the reaction kinetics of alkali-activated construction demolition waste. Two materials, concrete and brick demolition waste, were milled to powders and supplemented with either carbonated ...
Isabelle Wichmann, Dietmar Stephan
doaj +1 more source
Australian Endodontic Journal, EarlyView.ABSTRACT The objective of this study was to assess the hydration, crystalline structure, and setting of bioceramic ready‐to‐use and powder/liquid sealers in dry and wet root canal dentine. Thirty‐two single‐rooted human teeth were embedded in acrylic resin and sectioned into 2‐mm segments.
Thiago Bessa Marconato Antunes +8 more
wiley +1 more source
Development of durable “green” concrete exposed to deicing chemicals via synergistic use of locally available recycled materials and multi-scale modifiers [PDF]
, 2018 From the economic and social perspectives, the use of waste materials would not be attractive until their costs and quality can satisfy the construction requirements.
Cui, Na, Xie, Ning
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Archaeometry, EarlyView.Abstract This paper presents the first direct evidence of the slags produced during the cementation alloying process of Cu with speiss inside ceramic crucibles, thus representing Cu alloying with As in Middle Kingdom Egypt. The settlement deposits from the Middle Bronze Age were excavated on Elephantine Island, within modern Aswan.
Jiří Kmošek, Martin Odler
wiley +1 more source
Multi-scale simulation of capillary pores and gel pores in Portland cement paste [PDF]
, 2015 The microstructures of Portland cement paste (water to cement ratio is 0.4, curing time is from 1 day to 28 days) are simulated based on the numerical cement hydration model, HUMOSTRUC3D (van Breugel, 1991; Koenders, 1997; Ye, 2003).
Gao, Peng +3 more
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Medicine for the Material World
Archaeometry, EarlyView.ABSTRACT It is clear that many of the inorganic materials of antiquity have been used both as medicines for human ills and also as agents in technological processes. This paper speculates that there might have been a stronger link between these two functions in the past, based on the concept of “active agents”—materials that are efficacious at curing ...
A. M. Pollard
wiley +1 more source
The initial stages of cement hydration at the molecular level
Nature CommunicationsCement hydration is crucial for the strength development of cement-based materials; however, the mechanism that underlies this complex reaction remains poorly understood at the molecular level.
Xinhang Xu +5 more
doaj +1 more source