Abstract
Based on the change of resistivity during hydration the induction period of Portland cement hydration was studied. By testing the paste's Ca2+ concentration, electrical resistivity, mass fraction and decomposition temperature of calcium hydroxide as well as the hydration heat at different hydration time, the various periods of cement hydration were studied. Results show that the change of the electrical resistivity of the paste exhibits certain regularity, and the time between the minimum resistivity and the resistivity at which rapid increase begins can be taken as the induction period. Moreover, both the beginning and the end of induction period are related to the growth of calcium hydroxide.
| Original language | English |
|---|---|
| Pages (from-to) | 132-135 |
| Number of pages | 4 |
| Journal | Jianzhu Cailiao Xuebao/Journal of Building Materials |
| Volume | 12 |
| Issue number | 2 |
| Publication status | Published - Apr 2009 |
Keywords
- Electrical resistivity
- Hydration
- Induction period
- Portland cement
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