Review article

Investigation of long-term strength of glass fiber reinforced concrete with active mineral additives








The article describes the research results of physical and mechanical properties of glass fiber reinforced concrete (GFRC), regarding different time periods of hardening, at different dosing of alkali-resistant fiber and MKZhL-2 metakaolin. There were obtained bending strength data of glass fiber reinforced concrete modified by metakaolin at the age of 28 and 180 days. It is shown that at adding metakaolin (in amount of 15% from Portland cement and more) the durability of glass fiber reinforced concrete subjected to bending continues to remain high at the age of over 180 days. The co-effect of metakaolin and microsilica dioxide on strength properties of fine-grained glass fiber reinforced concrete was studied. The obtained data testify a positive effect of complex additive, in which metakaolin prevails, on deformation properties of dispersion glass-fiber reinforced concrete.


Ryabova A. A. Saint Petersburg State University of Architecture and Civil Engineering

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