不同岩性岩石粉对外加剂的吸附性能研究

Adsorption Properties of Rock Powder with Different Lithology on Additive

通过采用聚羧酸减水剂、萘系减水剂、脂肪族减水剂研究了片麻岩石粉、玄武岩石粉、花岗岩石和石灰石粉对减水剂吸附性。结果表明,采用聚羧酸减水剂,花岗岩石粉-水泥胶砂的流动度为79%,片麻岩石粉-水泥胶砂的流动度比为87%,玄武岩石粉-水泥胶砂的流动度比最好为110%;另外不同岩石粉对不同减水剂的适应性不同。

This article studies adsorbability of rock flour of gneiss,basalt,granite,and limestone on water-reducer,including polycarboxylate water-reducer,naphthalene water reducer,aliphatic series water-reducer.The results are as follows:when adopting polycarboxylate water-reducer,fluidity ratio of granite powder to cement mortar is 79%,that of gneiss powder to cement mortar is 87%,that of basalt powder to cement mortar is 110%.In addition,different rock powder varies in adaptability to different water reducers.