Discussion of the paper 'A new view on the kinetics of tricalcium silicate hydration,' by L. Nicoleau and A. Nonat, Cem. Concr. Res. 86 (2016) 1–11
| Autor: | Ellis Gartner |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Building & Construction
Chemistry Kinetics 0211 other engineering and technologies Mineralogy 1202 Building 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology 0905 Civil Engineering Chemical engineering Permeability (electromagnetism) Phase (matter) 021105 building & construction Anhydrous General Materials Science 0210 nano-technology Porosity Dissolution Afwillite Tricalcium silicate |
| Zdroj: | Cement and Concrete Research. 104:114-117 |
| ISSN: | 0008-8846 |
| DOI: | 10.1016/j.cemconres.2017.10.015 |
| Popis: | In contradiction to the proposition of Nicoleau and Nonat, it is shown that the rate of hydration of anhydrous tricalcium silicate (C3S) cannot be controlled by the rate of dissolution of the anhydrous phase in typical C3S pastes except at extremely early ages. The strongest evidence for this is the observation that the hydration of C3S in pastes is strongly accelerated by the addition of afwillite seeds, to the extent that it hydrates almost completely by 7 days. It is suggested that the hydration rate at later ages is primarily controlled by the porosity and permeability of the hydration products. |
| Databáze: | OpenAIRE |
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