摘要
研究了粉煤灰在碱性物质激发下,可以连续反应生成硅铝无机聚合物三维网络结构胶凝材料的特点,采用粉煤灰、复合激发剂、偏高岭土、普通硅酸盐水泥可制备出一种地聚合物水泥,对地聚合物水泥的强度、收缩率、抗冻性能进行了试验。结果表明,普通硅酸盐水泥∶复合激发剂∶偏高岭土∶粉煤灰=10%∶10%∶5%∶75%时,可获得最大激发效应的地聚合物水泥,其强度达到最大,同时具有很高的1d抗拉和抗压强度,收缩性能满足规范要求,抗冻性能远高于C40普通水泥混凝土的特种路面维修补强材料。
In this paper,the characteristics of three-dimensional network structure cementitious material of silica-alumina inorganic polymer produced by fly ash under the excitation of alkaline substances are studied.A geopolymer cement is prepared with fly ash,composite activator, metakaolin and ordinary portland cement,and its strength, shrinkage and frost resistance are also studied.It can be tested.The results show that when ordinary portland cement∶composite activator∶metakaolin∶fly ash=10%∶10%∶5%∶75%,the geopolymer cement with the maximum excitation effect can be obtained,and its strength reaches the maximum.At the same time, it has high 1d tensile and compressive strength,shrinkage performance meets the requirements of specifications, and the frost resistance of special pavement is much higher than that of C40 ordinary cement concrete.
作者
贾蓉蓉
JIA Rong-rong(Shanxi Transportation Research Institute, Taiyuan 030006,China)
出处
《北方交通》
2019年第5期67-70,共4页
Northern Communications
