Table 4.
Surfaces of mortars containing FBC I, FBC II and FBC III fly ashes, after testing the carbonized surface with the phenolphthalein solution.
| Type of Mortar | After 7 Days | After 28 Days | After 56 Days | After 90 Days |
|---|---|---|---|---|
| ZII (CEM I + 35% FBC I) |
 9.5% |
 28.4% |
 55.8% |
 100% |
| ZIII (CEM I + 70% FBC I) |
 24% |
 100% |
 100% |
 100% |
| ZIV (CEM I + 35% FBC I + 35% CFA) |
 12.0% |
 100% |
 100% |
 100% |
| ZV (CEM I + 35% FBC II) |
 6.3% |
 18.2% |
 44.6% |
 83.6% |
| ZVI (CEM I + 70% FBC II) |
 18.3% |
 83.0% |
 100% |
 100% |
| ZVII (CEM I + 35% FBC II + 35% CFA) |
 7.8% |
 24.8% |
 46.8% |
 100% |
| ZVIII (CEM I + 35% FBC III) |
 20.3% |
 39.4% |
 65.8% |
 100% |
| ZIX (CEM I + 70% FBC III) |
 35.0% |
 100% |
 100% |
 100% |
| ZX (CEM I + 35% FBC III + 35% CFA) |
 22.5% |
 100% |
 100% |
 100% |