Resistance of Modified Hardened Cement Paste to Frost and De-Icing Salts

Authors

  • Gintautas Skripkiūnas Dept of Building Materials, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10223 Vilnius, Lithuania
  • Džigita Nagrockienė Dept of Building Materials, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10223 Vilnius, Lithuania
  • Giedrius Girskas Dept of Building Materials, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10223 Vilnius, Lithuania
  • Eugenijus Janavičius Dept of Building Materials, Kaunas University of Technology, Studentų g. 48, 51367 Kaunas, Lithuania

DOI:

https://doi.org/10.3846/bjrbe.2012.36

Keywords:

concrete, hardened cement paste, frost resistance, salt solution, sodium silicate solution, durability

Abstract

Concrete is widely used in the structures of bridges, flyovers, sidewalks and carriageways that are exposed to freeze-thaw cycles in wet conditions and are treated with de-icing salts. Tests were made to examine the effect of sodium silicate solution on the resistance of hardened cement paste to frost and de-icing salts. 5% sodium chloride, calcium chloride and manganese chloride solutions were used as de-icing salts. The deterioration of hardened cement paste was assessed by the changes in compressive strength, ultrasonic pulse velocity, specimen deformations and amount of scaled matter during cyclic freezing and thawing. Test results have revealed that hardened cement paste modified with sodium silicate solution is less subject to destruction when the surface of cement paste is treated with de-icing salt solutions under cyclic freeze-thaw conditions. The research has proved that sodium silicate solution increases the durability of concrete used in road structures.

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Published

27.12.2012

How to Cite

Skripkiūnas, G., Nagrockienė, D., Girskas, G., & Janavičius, E. (2012). Resistance of Modified Hardened Cement Paste to Frost and De-Icing Salts. The Baltic Journal of Road and Bridge Engineering, 7(4), 269-276. https://doi.org/10.3846/bjrbe.2012.36