199-198 “The specific surface area and volume fraction of pores are calculated, and the results are shown in figure 7.”From the text of the manuscript it is not clear what method was used to obtain the calculated data on the specific surface area and volume fraction of pores.
The authors mention cracks as well as voids. How are the cracks differentiated from the voids? Were voids observed? Could computed microtomography be used to confirm some of the experimental results?