Results 51 to 60 of about 530,228 (260)
Formation of magnesium silicate hydrate cement in nature [PDF]
Journal of the Geological Society, 2017 Tillite lithified by magnesium silicate hydrate (M-S-H) cement has been formed at the surface of the Feragen Ultramafic Body in SE Norway. Serpentinization of olivine-rich rocks led to formation of brucite, which dissolves during weathering to form a high-pH (>9) Mg-rich fluid.
de Ruiter, Lisa, Austrheim, Håkon
openaire +4 more sources
Assessment of mechanical, thermal properties and crystal shapes of monoclinic tricalcium silicate from atomistic simulations [PDF]
Cement and Concrete Research. 140 (2021) 106269, 2020 The two most common polymorphs in industrial alite, $M_1$ and $M_3$, were characterized at the molecular scale. Different methods were employed and discussed to assess mechanical properties and specific heat of both polymorphs. The calculated homogenized elastic moduli and specific heat were found in good agreement with experimental measurements.
arxiv +1 more source
Study on properties and micro-properties of cement-sodium silicate double-liquid grouting material
Meikuang AnquanIn order to explore the internal relationship between the microstructure and macroscopic properties of cement-sodium silicate double-liquid grouting materials, Portland cement was used as the base cementing material and sodium silicate as the admixture ...
Qiuli LI +6 more
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The Effect of Red Mud on Sintering Processes and Minerals of Portland Cement for Roads
Crystals, 2021 As a solid waste generated in the alumina industry, red mud poses a significant environmental hazard and a storage problem. In this study, red mud was added to road cement clinker in order to utilize it.
Xiao Wang +4 more
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Tricalcium silicate-based cements: properties and modifications [PDF]
Brazilian Oral Research, 2018 Mineral trioxide aggregate (MTA) has been widely used for different reparative procedures in endodontics. The extensive use of this cement for pulp capping, apexifications, apical surgeries, and revascularization is related to its ability to induce tissue repair and to stimulate mineralization.
Duarte, Marco Antonio Hungaro +5 more
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Symmetry induced stability in alkali doped calcium-silicate-hydrate [PDF]
J. Phys. Chem. C. 2019, 123 (22), 14081 - 14088, 2018 CO$_2$ emissions originating from the construction industry have a significant impact on global warming where the production of ordinary Portland cement clinker is responsible for approximately 8\% of all human-made CO$_2$. Alkali doped calcium-silicate-hydrate (C-S-H) is a critical silicate material since the use of blended cements and alkali ...
arxiv +1 more source
Resistance of Modified Hardened Cement Paste to Frost and De-Icing Salts
The Baltic Journal of Road and Bridge Engineering, 2012 Concrete is widely used in the structures of bridges, flyovers, sidewalks and carriageways that are exposed to freeze-thaw cycles in wet conditions and are treated with de-icing salts.
Gintautas Skripkiūnas +3 more
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Effects of calcium silicate cements on neuronal conductivity
Restorative Dentistry & Endodontics, 2022 This study evaluated alterations in neuronal conductivity related to calcium silicate cements (CSCs) by investigating compound action potentials (cAPs) in rat sciatic nerves.Sciatic nerves were placed in a Tyrode bath and cAPs were recorded before, during, and after the application of test materials for 60-minute control, application, and recovery ...
Derya Deniz-Sungur +5 more
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Fracture toughness of calcium-silicate-hydrate grains from molecular dynamics simulations [PDF]
, 2014 Cement is the most widely used manufacturing material in the world and improving its toughness would allow for the design of slender infrastructure, requiring less material. To this end, we investigate by means of molecular dynamics simulations the fracture of calcium-silicate-hydrate (C-S-H), the binding phase of cement, responsible for its mechanical
arxiv +1 more source
Drying-Induced Atomic Structural Rearrangements in Sodium-Based Calcium-Alumino-Silicate-Hydrate Gel and the Mitigating Effects of ZrO$_2$ Nanoparticles [PDF]
Phys. Chem. Chem. Phys. 2018, 2017 Conventional drying of colloidal materials and gels (including cement) can lead to detrimental effects due to the buildup of internal stresses as water evaporates from the nano/microscopic pores. However, the underlying nanoscopic alterations in these gel materials that are, in part, responsible for macroscopically-measured strain values, especially at
arxiv +1 more source