Results 91 to 100 of about 21,244 (276)
Journal of Taibah University for ScienceThis study explores the synthesis and evaluation of β-Dicalcium silicate and Dicalcium phosphate-based cements for biomedical use. β-Tricalcium phosphate was synthesized using microwave-assisted wet precipitation, while β-Dicalcium silicate was prepared ...
Ammar Z. Alshemary +6 more
doaj +1 more source
Structural Concrete, EarlyView.Abstract Cold weather conditions impose substantial constraints upon the performance and long‐term resilience of concrete materials. Alkali‐activated slag (AAS) presents itself as a promising substitute, exhibiting sustained hydraulic activity even when exposed to ambient conditions characterized by low temperatures.
Zeynep Bahçeci +3 more
wiley +1 more source
Influência de radiopacificadores na solubilidade e desintegração dos MTA'S [PDF]
, 2012 TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências da Saúde. Odontologia.O MTA apresenta como radiopacificador o óxido de bismuto (Bi2O3), que tem recebido críticas por não participar da presa do material e torná-lo mais poroso.
Silva, Jean Sérgio da
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Structural 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
Marine Anoxia and Ocean Acidification During the End‐Permian Extinction
Geophysical Monograph Series, Page 325-340., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui +4 more
wiley +1 more source
New accelerating admixture based on metal silicate hydrates [PDF]
, 2015 In the present paper a new accelerating additive for cement mixtures, based on transition metal silicate hydrates, is described. The new additive is highly effective in promoting the nucleation and growth of silicate phases of portland cement.
FAVERO, MARCO +8 more
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International Journal of Dentistry, 2012 This study compared the in vitro marginal integrity of open-sandwich restorations based on aged calcium silicate cement versus resin-modified glass ionomer cement. Class II cavities were prepared on 30
S. Koubi +4 more
doaj +1 more source
Bacterial healing of cracks in metakaolin‐based geopolymer concrete exposed to high temperatures
Structural Concrete, EarlyView.Abstract This study examined the bacterial healing of metakaolin‐based geopolymer concrete modified with colemanite (K) and red mud (RM) exposed to high temperatures. The metakaolin‐based geopolymer concrete samples modified with 4% K and 6% RM were prepared.
Harun Tanyildizi +3 more
wiley +1 more source
Retention of Root Canal Posts: Effect of Cement Film Thickness, Luting Cement, and Post Pretreatment. [PDF]
, 2015 The aim of this study was to investigate the effect of the cement film thickness of a zinc phosphate or a resin cement on retention of untreated and pretreated root canal posts.
Benetti, A R +3 more
core +1 more source
The 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