Phase Transformations in Cement Matrix at Low Temperatures

Abstract:

The paper presents the results of the phase composition and structure of cement, hardened under alternating freezing/thawing. The fluctuation in the density of the cement through the number of freezing/thawing cycles was determined by the method of helium pycnometry. It is shown that the average size of micropores changes in the presence of plasticizing additives. It is determined that the type and size of pores in the cement effect on frost resistance. The positive effect of mineral slag on the frost resistance of the binder is demonstrated. The positive effect of mineral and polymer additives on the frost resistance of the binder has been discovered and presented in this work.

• Periodical: Materials Science Forum (Volume 992)
• Pages: 86-91
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.992.86
• Online since: May 2020
• Authors: Ekaterina Potapova, I. Korchunov, S. Perepelitsyna
• Keywords: Cement Matrix, Durability, Freezing-Thawing, Frost Resistance, Mineral Additives

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DOI: 10.1016/j.conbuildmat.2015.12.178