路面水泥混凝土抗折强度的研究

研究了硅粉对混凝土抗折强度的影响，根据试验数据总结出混凝土２８ ｄ 抗折强度与灰水比、硅粉掺量之间的定量关系；研究了硅粉和粉煤灰的复合效应，总结出水灰比为０－４５ 的情况下，混凝土２８ ｄ抗折强度随粉煤灰掺量和硅粉掺量的变化规律；并对粉煤灰混凝土的后期抗折强度进行了研究。

STUDY OF BENDING STRENGTH OF CEMENT CONCRETE FOR PAVEMENT

The effect ofsilica fume on the bending strength of concrete was studied.Accord ing to the dataobtained,the quantitative relationship between the 28day bending strength of concrete andwater binder ratio as well as the adding quantity of s ilica fume was summarized.Thecomposite effect of silica fume and fly ash on con c rete was studied.The quantitativerelationship between the 28day bending strengt h of concrete and the adding quantity offly ash as well as silica fume was summa rized(W/C is 0.45).The late bending strength offly ash concrete was also s tudied.