project |
index |
Bending strength (MPa) |
≥40 |
Compressive strength (MPa) |
≥ 75 |
Wear resistance (750g/500r, g) |
≤0.02 |
Adhesion to concrete |
Concrete failure |
Pencil hardness (h) |
≥2 |
Surface stem(h) |
≤8 |
hard work(d) |
≥1 |