The results indicate that ultrafined fly ash is a replacement of silica fame for producing DSP mateial, its hardened paste has a dense structure and a very high compressive strength.

• 结果表明； 用超细磨粉煤灰替代硅灰配制dsp材料是完全可行的，该硬化体结构密实，具有极高的抗压强度。