Effect of Hydration of Unreacted Cement in Hardened Mortar with Low W/C on the Long-Term Strength

Abstract:

Through accelerating the hydration by heighening the curing temperature, the effect of the hydration of the unreacted cement in the hardened mortar with low W/C on the long-term strength was investigated. The results show that in the hardened mortar with low W/C, there exists a lot of unreacted cement at the age of 28 days, and when these cement particles hydrate again at the long age, it is disadvantageous to the long-term strength of the mortar. Moreover, the lower the W/C, the lower the hydration degree at the earlier age, and the more disadvantageous to the development of strength at the long age.

• Periodical: Key Engineering Materials (Volumes 405-406)
• Pages: 350-355
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.405-406.350
• Online since: January 2009
• Authors: Xiao Xin Feng, Xiao Hua Sun, Xiao Yan Wang, Qing Min Wei
• Keywords: Hydration, Long-Term Strength, Unreacted Cement, W/C

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