Surface Corrosion and Microstructure Degradation of Calcium Sulfoaluminate Cement Subjected to Wet-Dry Cycles in Sulfate Solution

Figure 2

Surface change of CSA cement 0.50 w/c specimen under wet-dry cycles in 5% Na₂SO₄ solution.

(a) 18 cycles

(b) 22 cycles

(c) 25 cycles

(d) 31 cycles

(e) 39 cycles

(f) 41 cycles

(g) 43 cycles

(h) 46 cycles