| 고성능감수제가 시멘트 초기 수화에 미치는 영향 |
| 나승현, 강현주, 송영진, 송명신 |
| 강원대학교 화학공학연구소 |
| Effect of Superplasticizer on the Early Hydration Ordinary Potland Cement |
| Seung-Hun Na, Hyun-Ju Kang, Young-Jin Song, Myong-Shin Song |
| Research Institute of Chemical Engineering, Kangwon National University |
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| ABSTRACT |
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To improve concrete quality one of the most widely used chemical admixtures is polycarboxylate type superplasticizer. Unlike lignosulfonate and naphthalene-sulfonate, it has high dispersion property and excellent sustainable dispersion property for cement and concrete. Thus, polycarboxylate type superplasticizer has been widely used as a high-performance water reducing admixture together with silica fume in high-performance concrete and other applications for the dispersion of high-strength concrete over 100 MPa. However, even though there have been many studied on the dispersion of concrete by the structure of polycarboxylate type superplasticizer, there have a few studied that clarified the relationships between its rheological properties and microstructure properties in the early hydration behavior of ordinary portland cement. To investigate the correlations between the rheological properties and microstructure of cementitious materials with polycarboxylate type superplasticizer, this study experimented on the rheology, pore structure, heat evolution, and consistency in early hydration as well as on the compressive strength by early dispersion characteristics. |
| Key words:
Cement, Polycarboxylate, Pore structure, Heat of hydration |
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