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Influence of cellulose ethers on hydration products of portland cement

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Abstract

Cellulose ethers are widely used to mortar formulations, and it is significant to understand the interaction between cellulose ethers and cement pastes. FT-IR spectra, thermal analysis and SEM are used to investigate hydration products in the cement pastes modified by HEMC and HPMC in this article. The results show that the hydration products in modified cement pastes were finally identical with those in the unmodified cement paste, but the major hydration products, such as CH (calcium hydroxide), ettringite and C-S-H, appeared later in the modified cement pastes than in the unmodified cement paste. The cellulose ethers decrease the outer products and increase inner products of C-S-H gels. Compared to unmodified cement pastes, no new products are found in the modified cement pastes in the present experiment. The HEMC and HPMC investigation shows almost the same influence on the hydration products of Portland cement.

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Authors and Affiliations

  1. Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan, 430070, China

    Baoguo Ma  (马保国), Zhihua Ou  (欧志华), Shouwei Jian & Rulin Xu

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  1. Baoguo Ma  (马保国)
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  2. Zhihua Ou  (欧志华)
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  3. Shouwei Jian
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  4. Rulin Xu
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Corresponding author

Correspondence to Zhihua Ou  (欧志华).

Additional information

Funded by Youth Fund of National Natural Science Foundation of China (No.50902107), the 973 Program (No.2009CB623201) from Ministry of Science and Technology of China and the Fundamental Research Funds for the Central Universities.

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Ma, B., Ou, Z., Jian, S. et al. Influence of cellulose ethers on hydration products of portland cement. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 26, 588–593 (2011). https://doi.org/10.1007/s11595-011-0273-6

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  • DOI: https://doi.org/10.1007/s11595-011-0273-6

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