Effects of Calcination Conditions on the Formation and Hydration Performance of High-Alite White Portland Cement Clinker
| Autor: | Lei Huang, Shaowen Huang, Geling Cheng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
sintering time Materials science Alite 0211 other engineering and technologies Sintering 02 engineering and technology Calorimetry white portland cement clinker Clinker (cement) lcsh:Technology Article sintering temperature law.invention chemistry.chemical_compound Differential scanning calorimetry law 021105 building & construction General Materials Science Calcination lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T technology industry and agriculture rietveld quantitative analysis equipment and supplies 021001 nanoscience & nanotechnology hydration performance Chemical engineering chemistry lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 White Portland cement |
| Zdroj: | Materials, Vol 13, Iss 3, p 494 (2020) Materials Volume 13 Issue 3 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13030494 |
| Popis: | The purpose of this study was to evaluate the effects of sintering temperature and sintering time on mineral composition of high-alite white Portland cement clinker and hydration activity of the clinker. Effects of sintering temperature and sintering time on clinker mineral composition, C3S polymorph and size and hydration heat release rate were analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM), differential scanning calorimetry& Thermogravimetric Analysis (DSC-TG) and isothermal heat-conduction calorimetry. Results shown that, with the increase of sintering temperature (1450&ndash 1525 ° C) and sintering time (60&ndash 240 min), free lime (f-CaO) in clinker decreased, C3S grain size increased, and C3S crystal type changed from T3 to M type and R type, which exhibits higher symmetry. The hydration activity of different C3S crystals ranged from high to low as follows: T3&rarr M1&rarr M3&rarr R@. |
| Databáze: | OpenAIRE |
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