ļ»æ Gintautas Skripkiūnas, Džigita Nagrockienė, Giedrius Girskas, Eugenijus Janavičius - Resistance of modified hardened cement paste to frost and de-icing salts (Vol VII, No 4)

Vilnius Gediminas Technical UniversityRiga Technical UniversityTallinn University of TechnologyBaltic Road Association

 

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2015 Impact Factor: 0.519 ©2015 Thomson Reuters, 2015 Journal Citation Report®

ISSN 1822-427X print
ISSN 1822-4288 online
 

 

 
 

"The Baltic Journal of Road and Bridge Engineering"
Vilnius: Technika, 2012, Vol VII, No 4, p. 269-276


Gintautas Skripkiūnas, Džigita Nagrockienė, Giedrius Girskas, Eugenijus Janavičius

Resistance of modified hardened cement paste to frost and de-icing salts

DOI: 10.3846/bjrbe.2012.36
 
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.
 
Keywords: concrete, hardened cement paste, frost resistance, salt solution, sodium silicate solution, durability.

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