粉煤灰细度和掺量对胶凝材料需水行为的影响

Effect of the fineness and proportion of fly ash on the water demand behavior of cementitious material

通过单掺粉煤灰、双掺粉煤灰和矿渣粉,研究了粉煤灰不同细度和掺量、矿渣粉掺量固定与粉煤灰复合时胶凝材料的需水行为,进而为设计混凝土配合比时提供指导。研究表明,粉煤灰细度对胶凝材料需水行为影响显著,随着掺量的增加,需水量呈下降趋势。细度细、掺量大时胶凝材料需水行为明显改善。

Based on the single doped fly ash and double doped fly ash and slag powder,it studied the water demand behavior of cementitious material with different fineness and proportion of fly ash and slag powder fixed with fly ash,and provide guidance for design of concrete.Research showed that the fineness of fly ash has significant effects onthe water demand behavior of cementitiousmaterial,water demand was on the decline along with the increase of the proportion of fly ash.The waterdemend behavior of cementitious material was obviously improved when fly ash was low fineness and big proportion.