Effect of fly ash on strength of cinder lightweight aggregate concrete

摘要

The effect of fly ash content and particle size on the compressive strength of volcanic slag lightweight aggregate concrete was studied. Experimental results show that the mixed fly ash can reduce cinder early compressive strength of lightweight aggregate concrete, with the prolongation of continuously, the secondary hydration of fly ash is completely, the late compressive strength are improved significantly. The particle size of fly ash on cinder affect the strength of lightweight aggregate concrete a reasonable scope, when fly ash after 5-10 minutes of mechanical grinding with cinder of light aggregate concrete effect is best.