Abstract
The hydration process, hydration product and hydration heat of blended cement paste mixed with mineral admixture and expansive agent at low W/B ratio are studied by XRD, thermo analysis, and calorimetry instrument, and they were compared with those of pure cement paste. The results show that pure cement and blended cement at low W/B ratio have the same types of hydration products, but their respective amounts of hydration products of various blended cements at same ages and the variation law of the amount of same hydration products with ages are different; The joint effect of tumefaction of gel-ettringite due to water absorption and the expansive pressure on the pore and rift caused by the crystalloid ettringite is the impetus of the volume expansion of cement paste, and the former effect is much greater than the latter one.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Breugel, K van. Numerical Simulation of Hydration and Microstructural Development in Hardening Cement-based Materials (II) Theory.Cement and Concrete Research, 1995, 25(2):319–331
Zhang Ying, Shi Mei-lun. Study of the Hydration Process of Cement-based Materials by AC Impedance Technique.Journal of Building Materials, 2000, 3(2):109–112(in Chinese)
Bentz, D P. Three-dimensional Computer Simulation of Portland Cement Hydration and Microsturcture Development.J. Am. Ceram. Soc., 1997, 80(1):3–21
Lu Linnu.Study on Pumpcrete and High-strength Concrete Expert System. [Thesis of Master's Degree]. Wuhan: Wuhan University of Technology, 1999
Ding Qing-jun, Lu Lin-nu, Hu Shu-guang, He Yong-jia. Preparation of High Impermeable and Crack-resistance Chemical Admixture and Its Mechanism.Journal of Wuhan University of Technology-Mater. Sci. Ed., 2002, 17(2):70–73
Deng Ming, Tang Ming-shu. Formation and Expansion of Ettringite Crystals.Cement and Concrete Research, 1994, 24(1):119
Author information
Authors and Affiliations
Additional information
HU Shu-guang: Born in 1957
Funded by 973 High-tech Project of China (No. 2001CB610704-2) and the Natural Science Foundation of Hubei Province(No. 2002AB075)
Rights and permissions
About this article
Cite this article
Shu-guang, H., Lin-nu, L., Yong-jia, H. et al. The hydration of blended cement at lowW/B ratio. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 18, 72–75 (2003). https://doi.org/10.1007/BF02838397
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02838397