Abstract: Effects of deicer-frost on the mass loss, compressive strength, the dynamic elastic modulus, base frequency and the solution absorption of lithium slag concrete and steel-polypropylene hybrid fiber reinforced concrete were investigated under freezing thawing cycles. With the increase of the number of salt-freezing cycles, both LiC and HFC showed that the mass loss rate increased, the compressive strength first increased and then decreased, the early stability of dynamic elastic modulus decreased gradually, and the variation of solution absorption first decreased and then increased. The comparison can show that the steel-polypropylene hybrid fiber can reduce the internal damage of concrete in deicer-frost condition and improve the freezing thawing-resistant performance of concrete.
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2018, Vol. 32 
