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Effect of curing time and temperature on hydration kinetics of superplasticized silica fume-blended cement
The blended cement used in this investigation was ordinary Portland cement (OPC) and silica fume. Addition of polycarboxylate superplasticizer enhances the rheological parameters. The admixture acts as lubrication materials, which increases the movement of these cement particles. The electrical behavior of polymer-blended cement mixes have been studied in the to correlate the time evolution of the electrical parameters with the chemical and microstructure modification. The change in electrical behavior is correlated to microstructure changes induced by the addition of polycarboxylate superplasticizer purposely formulated for cement composites. It was shown that the electrical conductivity of OPC pastes at 1 day exhibited a higher value than silica fume cement pastes. In absence of admixture, the chemically combined water increases, whereas the chemically combined water content decreases when the dosages of admixture increases. Compressive strength of OPC free from admixture is higher than 10 wt% SF-OPC cement pastes. But in the presence of 0,75-1,5 wt% polycarboxylate superplasticizer the compressive strength of 10 wt% SF-OPC ih higher than OPC cement pastes.
Effect of curing time and temperature on hydration kinetics of superplasticized silica fume-blended cement
The blended cement used in this investigation was ordinary Portland cement (OPC) and silica fume. Addition of polycarboxylate superplasticizer enhances the rheological parameters. The admixture acts as lubrication materials, which increases the movement of these cement particles. The electrical behavior of polymer-blended cement mixes have been studied in the to correlate the time evolution of the electrical parameters with the chemical and microstructure modification. The change in electrical behavior is correlated to microstructure changes induced by the addition of polycarboxylate superplasticizer purposely formulated for cement composites. It was shown that the electrical conductivity of OPC pastes at 1 day exhibited a higher value than silica fume cement pastes. In absence of admixture, the chemically combined water increases, whereas the chemically combined water content decreases when the dosages of admixture increases. Compressive strength of OPC free from admixture is higher than 10 wt% SF-OPC cement pastes. But in the presence of 0,75-1,5 wt% polycarboxylate superplasticizer the compressive strength of 10 wt% SF-OPC ih higher than OPC cement pastes.
Effect of curing time and temperature on hydration kinetics of superplasticized silica fume-blended cement
Einfluss der Erhärtungszeit und Temperatur auf die Hydratationskinetik von mit superplastifiziertem Silicafeinstaub gemischten Zement
Morsy, M.S. (author) / Aiad, I. (author) / Heikal, M. (author)
2003
12 Seiten, 9 Bilder, 2 Tabellen, 29 Quellen
Conference paper
English
| British Library Conference Proceedings | 2003
| British Library Online Contents | 2005
Simulation of silica fume blended cement hydration
| Springer Verlag | 2004