Effect of Limestone Powder on Thaumasite Form of Sulfate Attack (TSA) of Cement-Based Materials

Table 3

Corrosion damage grade of TSA [20].

Damage grades	Corrosion features
1	No visible deterioration
2	Some deterioration at corners
3	Deterioration at the corners and edges
4	Deterioration at the corners and some cracking along the edges
5	Cracking and expansion along the edges
6	Serious cracking, expansion, or spalling
7	Serious spalling or expansion of surfaces
8	Grey pulp at the corners, edges, and surface
9	Amount of grey pulp at the specimens
10	Complete damage