EXPERIMENTAL STUDY ON ANTI-FREEZING AND THAWING PERFORMANCE OF REINFORCED CONCRETE OF BASALT FIBER UNDER CORROSION CONDITION

Basalt fiber reinforced concrete (BFRC) is a kind of new composite building materials. In order to study its engineering durability, the freeze-thaw performance of this new composite building material under corrosion-resistance conditions can be studied by experimental method. Tests were respectively carried out for the concrete life reinforced by anti-freeze-thaw basalt fiber in a non-corrosive environment, at 5% NaCl solution, 5% MgSO₄ solution and complex solution (5% MgCl₂ +5% Na₂SO₄). The results showed that: in above four cases, when the composite material experienced freeze-thaw cycles, the speed of elastic modulus would become lower in turn. Conclusions: Basalt fiber can significantly enhance the ability of freeze-thaw damage of concrete corrosion under freeze-thaw conditions and extend the cyclic lifespan of freeze-thaw concrete under corrosion resistance conditions.