Table 7 Correlation between SAI and freeze–thaw cycles (n).

From: Study on the durability and mechanical properties of carbon fiber reinforced concrete for shaft lining under chloride salt freeze–thaw coupling environment

Group

Formula

R2

Freezing–thawing cycles

OC

SAI = 1.06 × 10−6n3 − 1.72 × 10−4n2 + 4.36 × 10−3n + 1.01

0.991

[0,100]

CFRC

SAI = 7.75 × 10−7n3 − 1.24 × 10−4n2 + 2.85 × 10−3n + 1.01

0.997

[0,100]

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