Results 31 to 40 of about 530,228 (260)
Mechanisms and kinetics of C-S-H nucleation approaching the spinodal line: Insights into the role of organics additives [PDF]
Cement and Concrete Research, 173, 2023, 107299, 2023 Wet chemistry C-S-H precipitation experiments were performed under controlled conditions of solution supersaturation in the presence and absence of gluconate and three hexitol molecules. Characterization of the precipitates with SAXS and cryo-TEM experiments confirmed the presence of a multi-step nucleation pathway. Induction times for the formation of
arxiv +1 more source
Physicochemical and Biological Properties of Mg-Doped Calcium Silicate Endodontic Cement
Materials, 2021 Calcium silicate-based cement has been widely used for endodontic repair. However, it has a long setting time and needs to shorten setting time. This study investigated the effects of magnesium (Mg) ion on the setting reaction, mechanical properties, and
Kyung-Hyeon Yoo +2 more
semanticscholar +1 more source
Do cement nanoparticles exist in space ? [PDF]
MNRAS 442, 1319 (2014), 2014 The calcium-silicate-hydrate is used to model properties of cement on Earth. We study cementitious nanoparticles and propose these structures as components of cosmic dust grains. Quantum density functional theory methods are applied for the calculation of infrared spectra of Ca4Si4O14H4, Ca6Si3O13H2, and Ca12Si6O26H4 clusters. We find bands distributed
arxiv +1 more source
Journal of Indian Society of Pedodontics and Preventive Dentistry, 2014 Background: Restoration of carious primary molars is still a major concern while treating the young children that too in deep carious lesion which extends below the cemento-enamel junction (CEJ) where pulp protection and achieving adequate marginal seal ...
Vignesh Guptha Raju +5 more
doaj +1 more source
Buildings, 2023 Double liquid grouting materials (DLGMs) are composed of slurry A and slurry B. In response to the need for sustainable development, there is currently a focus on improving the utilization rate of resources. In this paper, industrial solid waste fly ash,
Aiguo Wang +8 more
doaj +1 more source
International Journal of Nanomedicine, 2018 Mineral trioxide aggregate (MTA) is the most frequently used repair material in endodontics, but the long setting time and reduced mechanical strength in acidic environments are major shortcomings.
Bor‐Shiunn Lee +6 more
semanticscholar +1 more source
Modelling the Pb release during Portland cement alteration [PDF]
Advances in Cement Research 21, 1 (2009) 1-10, 2014 Complex cementitious matrices undergo weathering with environmental exchange and can release metallic pollutants during alteration. The molecular mechanisms responsible for metal release are difficult to identify, though this is necessary if such processes are to be controlled.
arxiv +1 more source
Journal of Functional Biomaterials, 2023 The liquid extract method is commonly used to evaluate the cytotoxicity and bioactivity of materials. Although ISO has recommended guidelines for test methods, variations in elution period, and shape of samples can influence the biological outcomes.
Valene Phang +6 more
doaj +1 more source
Chemo-mechanical characterization of hydrated Calcium-Hydrosilicates with coupled Raman and nanoindentation measurements [PDF]
Applied Geochemistry Volume 118, July 2020, 104582, 2020 Celitement is a new type of cement that is based on hydraulic calcium-hydrosilicate (hCHS) that possesses a potential for minimizing the ratio C/S from above 3 in OPC down to 1, which significantly reduces the amount of CO$_2$ released during processing.
arxiv +1 more source
Comparative Study of Soil Grouting with Cement Slurry and Cement-Sodium Silicate Slurry
Advances in Materials Science and Engineering, 2018 Cement slurry and cement-sodium silicate slurry are most widely applied for soil grouting reinforcement project. The viscosity change of cement slurry is negligible during grouting period and presumed to be time independent, while the viscosity of cement-
Mingting Zhu +3 more
doaj +1 more source