Durability and Microstructural Evolution of PVA-Fiber-Reinforced Concrete Under Coupled Sulfate Attack and Freeze-Thaw Conditions.

As shown in Figure 11 , with the increase in the number of salt freezing cycles, the cube compressive strength loss rate of PF 0 S 5 , PF 0.1 S 5 , PF 0.3 S 5 and PF 0.5 S 5 specimens showed a trend of decreasing first and then increasing, and the rising rate gradually accelerated.

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