Understanding silicate hydration from quantitative analyses of hydrating tricalcium silicates

Elizaveta Pustovgar, Rahul P. Sangodkar, Andrey S. Andreev, Marta Palacios, Bradley F. Chmelka, Robert J. Flatt and Jean-Baptiste d’Espinose de Lacaillerie ()
Additional contact information
Elizaveta Pustovgar: Institute for Building Materials, Environmental and Geomatic Engineering
Rahul P. Sangodkar: University of California
Andrey S. Andreev: Soft Matter Science and Engineering Laboratory, UMR CNRS 7615, ESPCI Paris, PSL Research University
Marta Palacios: Institute for Building Materials, Environmental and Geomatic Engineering
Bradley F. Chmelka: University of California
Robert J. Flatt: Institute for Building Materials, Environmental and Geomatic Engineering
Jean-Baptiste d’Espinose de Lacaillerie: Institute for Building Materials, Environmental and Geomatic Engineering

Nature Communications, 2016, vol. 7, issue 1, 1-9

Abstract: Abstract Silicate hydration is prevalent in natural and technological processes, such as, mineral weathering, glass alteration, zeolite syntheses and cement hydration. Tricalcium silicate (Ca3SiO5), the main constituent of Portland cement, is amongst the most reactive silicates in water. Despite its widespread industrial use, the reaction of Ca3SiO5 with water to form calcium-silicate-hydrates (C-S-H) still hosts many open questions. Here, we show that solid-state nuclear magnetic resonance measurements of 29Si-enriched triclinic Ca3SiO5 enable the quantitative monitoring of the hydration process in terms of transient local molecular composition, extent of silicate hydration and polymerization. This provides insights on the relative influence of surface hydroxylation and hydrate precipitation on the hydration rate. When the rate drops, the amount of hydroxylated Ca3SiO5 decreases, thus demonstrating the partial passivation of the surface during the deceleration stage. Moreover, the relative quantities of monomers, dimers, pentamers and octamers in the C-S-H structure are measured.

Date: 2016
References: Add references at CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/ncomms10952 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10952

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms10952

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().