Results 41 to 50 of about 14,253 (226)
Ain Shams Engineering JournalThis paper investigates the effect of a novel super-early-strength cement grout composite on water leakage in the shield section of metro tunnels in operation.
Xiaokai Niu +5 more
doaj +1 more source
Solid-state nuclear magnetic resonance spectroscopy of cements
Materials Today Advances, 2019 Cement is the ubiquitous material upon which modern civilisation is built, providing long-term strength, impermeability and durability for housing and infrastructure.
B. Walkley, J.L. Provis
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Materials & Design, 2020 In earlier publications it has been demonstrated that alginate and similarly structured biopolymers unexpectedly accelerate the hydration of calcium alumina cement. Here, this effect is investigated by applying 27Al MAS NMR spectroscopy and XRD technique
Alexander Engbert, Johann Plank
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Influence of calcium sulphoaluminoferrite on the cement stone structure [PDF]
E3S Web of Conferences, 2020 Usually to obtain expansive cements sulphoaluminate clinker or mix aluminate clinker with calcium sulphates (gypsum, hemihydrate, anhydrate) are used. This paper deals with the composition and properties of solid solution of calcium sulphoaluminoferrite.
Samchenko Svetlana, Zorin Dmitriy
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Estimation of cement thermal properties through the three-phase model with application to geothermal wells [PDF]
, 2018 Geothermal energy has been used by mankind since ancient times. Given the limited geographical distribution of the most favorable resources, exploration efforts have more recently focused on unconventional geothermal systems targeting greater depths to ...
Falcone, Gioia +2 more
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Australian Endodontic Journal, EarlyView.ABSTRACT This study aimed to compare the physicochemical properties of EndoSequence Root Repair Material (ERRM) Fast and CeraPutty with ProRoot MTA and Biodentine, focusing on setting time, radiopacity, microhardness, and pH. Setting time was measured using a Gilmore‐type indenter applied every 5 min until no indentation was observed (n = 15 per group).
So‐Mang Lee +3 more
wiley +1 more source
The impact of intrinsic anhydrite in an experimental calcium sulfoaluminate cement from a novel, carbon-minimized production process [PDF]
, 2017 Gulf Organisation for Research and Development EG016-RG11757 Open access via Springer Compcat Agreement The authors are grateful for the financial support of the Gulf Organization for Research and Development (GORD) through grant EG016-RG11757.
Galan, Isabel +5 more
core +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
Electronic band structure and carrier effective mass in calcium aluminates [PDF]
, 2007 First-principles electronic band structure investigations of five compounds of the CaO-Al2O3 family, 3CaO.Al2O3, 12CaO.7Al2O3, CaO.Al2O3, CaO.2Al2O3 and CaO.6Al2O3, as well as CaO and alpha-, theta- and kappa-Al2O3 are performed.
A. C. Tas +15 more
core +3 more sources
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