Influence of Hydroxyethyl Methyl Cellulose on Early Hydration of Calcium Sulfoaluminate Cement

被引：0
|
作者：
Wu K. [1 ]
Kang W. [1 ]
Xu L. [1 ]
Hecker A. [2 ]
Ludwig H.-M. [2 ]
Wang P. [1 ]
机构：
[1] School of Materials Science and Engineering, Tongji University, Key Laboratory of Advanced Civil Engineering Materials, Shanghai
[2] F.A. Finger Institute, Bauhaus University Weimar, Weimar
来源：
Wang, Peiming (tjwpm@126.com) | 1600年 / Chinese Ceramic Society卷 / 48期
关键词：
Calcium sulfoaluminate cement; Cellulose ether; Early hydration; Transverse relaxation time; ζ; potential;
D O I：
10.14062/j.issn.0454-5648.20190625
中图分类号：
学科分类号：
摘要：
The influence of hydroxyethyl methyl cellulose (HEMC) on the early hydration of Portland cement and rapid-hardening calcium sulfoaluminate cement (CSA) was investigated by acoustic and electroacoustic spectrometer and low-field NMR instrument. The water retention and air void content of fresh mortars were analyzed. The results show that regardless of cement variation, the water retention and air void content are improved after the addition of HEMC. The change of zeta potential is related to cement type. For the Portland cement paste, the addition of HEMC greatly shortens the time of zeta potential becoming electropositive, and the absolute value of ζ potential for rapid-hardening CSA paste decreases slightly. In addition, the T2 distribution of HEMC containing cement pastes also appears a relaxation peak at 100-1 000 ms. Such a peak disappears after 3-d hydration for the Portland cement, while it only disappears in 120 min for rapid-hardening CSA, indicating that HEMC exerts a weak adsorption on the surface of rapid-hardening CSA particles. Unlike the retardation effect of HEMC on the Portland cement hydration, HEMC hardly affects the early hydration heat release of rapid-hardening CSA. © 2020, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：615 / 621
页数：6
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共 34 条
  • [1] Tadros M.E., Skalny J., Kalyoncu R.S., Early hydration of tricalcium silicate, Am Ceram Soc, 59, 7-8, pp. 344-347, (2010)
  • [2] Thomas J.J., Jennings H.M., Chen J.J., Influence of nucleation seeding on the hydration mechanisms of tricalcium silicate and cement, J Phys Chem C, 113, 11, pp. 4327-4334, (2009)
  • [3] Zhang G., Wang P., J Tongji Univ (Nat Sci), 37, 3, pp. 369-373, (2009)
  • [4] Bullard J.W., Jennings H.M., Livingston R.A., Et al., Mechanisms of cement hydration, Cem Concr Res, 41, 12, pp. 1208-1223, (2011)
  • [5] Weyer H.J., Muller I., Schmitt B., Et al., Time-resolved monitoring of cement hydration: Influence of cellulose ethers on hydration kinetics, Nucl Inst Methods Phys Res B, 238, 4, pp. 102-106, (2005)
  • [6] Pourchez J., Grosseau P., Ruot B., Current understanding of cellulose ethers impact on the hydration of C<sub>3</sub>A and C<sub>3</sub>A-sulphate systems, Cem Concr Res, 39, 8, pp. 664-669, (2009)
  • [7] Pourchez J., Grosseau P., Ruot B., Changes in C<sub>3</sub>S hydration in the presence of cellulose ethers, Cem Concr Res, 40, 2, pp. 179-188, (2010)
  • [8] Ma B., Ou Z., Jian S., Et al., Influence of cellulose ethers on hydration products of portland cement, J Wuhan Univ Technol (Mater Sci Ed), 26, 3, pp. 588-593, (2011)
  • [9] Ma B., Ou Z., Jian S., Et al., J Build Mater, 14, 6, pp. 798-802, (2011)
  • [10] Zhang G., Rui H., Lu X., Et al., Early hydration of calcium sulfoaluminate cement in the presence of hydroxyethyl methyl cellulose, J Thermal Anal Calorim, 9, pp. 1-10, (2018)
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