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

Figure 4

Surface change of CSA cement specimens under wet-dry cycles in 5% Na₂SO₄ solution.

(a) 0.50 w/c, 46 cycles

(b) 0.40 w/c, 46 cycles

(c) 0.30 w/c, 46 cycles

(d) 0.30 w/c, 119 cycles