Study on the effect of fly ash on the salt-freezing resistance of high-strength concrete

The degradation of high-strength concrete after freeze-thaw cycles in 4% NaCl solution was investigated, and the effect of fly ash dosage on the durability of high-strength concrete in salt-freezing environment was analysed. The results showed that the concrete surface damage became more and more obvious with the increase of the number of freeze-thaw cycles. With the increase of the number of freeze-thaw cycles, the mass loss rate of the specimens gradually increased, and the upward trend was more and more obvious.