In the test, the strength grade of concrete is C20 and C60, and the cementitious system contains 10%, 20%, 30% and 40% of fly ash in accord with weight.

• 实验中应用的混凝土的强度等级分别为C20和C60，其中粉煤灰的掺量（胶凝材料的质量分数）分别为未掺、10%25、20%25、30%25、40%25。