FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2327733186> ?p ?o ?g. }

• W2327733186 endingPage "1836" @default.
• W2327733186 startingPage "1827" @default.
• W2327733186 abstract "Calcium silicate hydrate (C-S-H) is the main constituent of hydrated cement paste and determines its cohesive properties. Because of the environmental impact of cement industry, it is more and more common to replace a part of the clinker in cement by secondary cementitious materials (SCMs). These SCMs are generally alumina-rich and as a consequence some aluminum is incorporated into the C-S-H. This may have consequences on the cohesion and durability of the material, and it is thus of importance to know the amount and the location of Al in C-S-H and what the parameters are that control these features. The present paper reports the 29Si and 27Al MAS NMR analyses of well-characterized C-A-S-H samples (C-S-H containing Al). These samples were synthesized using an original procedure that successfully leads to pure C-A-S-H of controlled compositions in equilibrium with well-characterized solutions. The 27Al MAS NMR spectra were quantitatively interpreted assuming a tobermorite-like structure for C-A-S-H to determine the aluminum location in this structure. For this purpose, an in-house written software was used which allows decomposing several spectra simultaneously using the same constrained spectral parameters for each resonance but with variable intensities. The hypothesis on the aluminum location in the C-A-S-H structure determines the proportion of each silicon site. Therefore, from the 27Al NMR quantitative results and the chemical composition of each sample, the intensity of each resonance line in the 29Si spectra was set. The agreement between the experimental and calculated 29Si MAS NMR spectra corroborates the assumed C-A-S-H structure and the proposed Al incorporation mechanism. The consistency between the results obtained for all compositions provides another means to assess the assumptions on the C-A-S-H structure. It is found that Al substitutes Si mainly in bridging positions and moderately in pairing positions in some conditions. Al in pairing site is observed only for Ca/(Si+Al) ratios greater than 0.95 (equivalent to 4 mmol.L–1 of calcium hydroxide). Finally, the results suggest that penta and hexa-coordinated aluminum are adsorbed on the sides of the C-A-S-H particles." @default.
• W2327733186 created "2016-06-24" @default.
• W2327733186 creator A5004458118 @default.
• W2327733186 creator A5014413604 @default.
• W2327733186 creator A5062661716 @default.
• W2327733186 creator A5076581821 @default.
• W2327733186 creator A5078599843 @default.
• W2327733186 date "2012-01-25" @default.
• W2327733186 modified "2023-10-16" @default.
• W2327733186 title "²⁷Al and ²⁹Si Solid-State NMR Characterization of Calcium-Aluminosilicate-Hydrate" @default.
• W2327733186 cites W111018030 @default.
• W2327733186 cites W1801956409 @default.
• W2327733186 cites W1923012155 @default.
• W2327733186 cites W1965528691 @default.
• W2327733186 cites W1967181073 @default.
• W2327733186 cites W1991538367 @default.
• W2327733186 cites W1997734218 @default.
• W2327733186 cites W1997736505 @default.
• W2327733186 cites W1999496311 @default.
• W2327733186 cites W2005630758 @default.
• W2327733186 cites W2006717254 @default.
• W2327733186 cites W2009671442 @default.
• W2327733186 cites W2017234604 @default.
• W2327733186 cites W2022423446 @default.
• W2327733186 cites W2026511785 @default.
• W2327733186 cites W2031579129 @default.
• W2327733186 cites W2034020166 @default.
• W2327733186 cites W2036929306 @default.
• W2327733186 cites W2046401884 @default.
• W2327733186 cites W2048721396 @default.
• W2327733186 cites W2052316051 @default.
• W2327733186 cites W2061510462 @default.
• W2327733186 cites W2071133141 @default.
• W2327733186 cites W2072089722 @default.
• W2327733186 cites W2072838799 @default.
• W2327733186 cites W2074861254 @default.
• W2327733186 cites W2076329211 @default.
• W2327733186 cites W2079986499 @default.
• W2327733186 cites W2082875739 @default.
• W2327733186 cites W2084706686 @default.
• W2327733186 cites W2138384979 @default.
• W2327733186 cites W2139427645 @default.
• W2327733186 cites W2176694516 @default.
• W2327733186 cites W2321049040 @default.
• W2327733186 doi "https://doi.org/10.1021/ic202124x" @default.
• W2327733186 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22277014" @default.
• W2327733186 hasPublicationYear "2012" @default.
• W2327733186 type Work @default.
• W2327733186 sameAs 2327733186 @default.
• W2327733186 citedByCount "217" @default.
• W2327733186 countsByYear W23277331862012 @default.
• W2327733186 countsByYear W23277331862013 @default.
• W2327733186 countsByYear W23277331862014 @default.
• W2327733186 countsByYear W23277331862015 @default.
• W2327733186 countsByYear W23277331862016 @default.
• W2327733186 countsByYear W23277331862017 @default.
• W2327733186 countsByYear W23277331862018 @default.
• W2327733186 countsByYear W23277331862019 @default.
• W2327733186 countsByYear W23277331862020 @default.
• W2327733186 countsByYear W23277331862021 @default.
• W2327733186 countsByYear W23277331862022 @default.
• W2327733186 countsByYear W23277331862023 @default.
• W2327733186 crossrefType "journal-article" @default.
• W2327733186 hasAuthorship W2327733186A5004458118 @default.
• W2327733186 hasAuthorship W2327733186A5014413604 @default.
• W2327733186 hasAuthorship W2327733186A5062661716 @default.
• W2327733186 hasAuthorship W2327733186A5076581821 @default.
• W2327733186 hasAuthorship W2327733186A5078599843 @default.
• W2327733186 hasConcept C121332964 @default.
• W2327733186 hasConcept C127413603 @default.
• W2327733186 hasConcept C1276947 @default.
• W2327733186 hasConcept C161790260 @default.
• W2327733186 hasConcept C178790620 @default.
• W2327733186 hasConcept C185592680 @default.
• W2327733186 hasConcept C191897082 @default.
• W2327733186 hasConcept C192562407 @default.
• W2327733186 hasConcept C199289684 @default.
• W2327733186 hasConcept C2777335606 @default.
• W2327733186 hasConcept C2777409741 @default.
• W2327733186 hasConcept C2779666059 @default.
• W2327733186 hasConcept C2779850335 @default.
• W2327733186 hasConcept C2780300285 @default.
• W2327733186 hasConcept C2780816545 @default.
• W2327733186 hasConcept C2781060337 @default.
• W2327733186 hasConcept C42360764 @default.
• W2327733186 hasConcept C4839761 @default.
• W2327733186 hasConcept C513153333 @default.
• W2327733186 hasConcept C523993062 @default.
• W2327733186 hasConcept C544956773 @default.
• W2327733186 hasConcept C67787023 @default.
• W2327733186 hasConcept C8010536 @default.
• W2327733186 hasConcept C85704489 @default.
• W2327733186 hasConceptScore W2327733186C121332964 @default.
• W2327733186 hasConceptScore W2327733186C127413603 @default.
• W2327733186 hasConceptScore W2327733186C1276947 @default.
• W2327733186 hasConceptScore W2327733186C161790260 @default.
• W2327733186 hasConceptScore W2327733186C178790620 @default.
• W2327733186 hasConceptScore W2327733186C185592680 @default.

• next