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Antagonistic effect...
Antagonistic effect of superplasticizer and colloidal nano-silica in the hydration of Alite and Belite pastes
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- Björnström, Joakim, 1976 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry
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- Panas, Itai, 1959 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2007-06-01
- 2007
- Engelska.
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Ingår i: Journal of Materials Science. - : Springer Science and Business Media LLC. - 0022-2461 .- 1573-4803. ; 42:11, s. 3901-3907
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The dependence on the hydration rate for Alite and Belite clinker phases in the presence of a polycarboxylate superplasticizer PC SP upon addition of colloidal nano-silica CNS were monitored by means of Diffuse Reflectance Infrared spectroscopy DR-FTIR. Spectral signatures of clinker dissolution and product formation were acquired for both materials. The rates for the build-up of product vibrational band intensities were found to depend sensitively on addition of CNS. The hydration product was proposed to be calcium-silicate-hydrate C-S-H. Details in the spectral signatures were found to differ. Quantum chemical calculations were employed and found to be consistent with the interpretation that small clusters dominate the Alite C-S-H spectrum, whereas the Belite C-S-H spectrum results from extended polymers.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
Nyckelord
- DENSITY
- TRICALCIUM SILICATE
- MOLECULES
- CEMENT
- CHEMISTRY
- TRICALCIUM SILICATE; CEMENT; DENSITY; MOLECULES; CHEMISTRY
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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