掺混合材的硫铝酸盐水泥体系强度效应研究

关键字：掺混合材,硫铝酸盐,水泥,体系,强度

（武汉科技大学 城市建设学院，湖北 武汉  430065）

    摘要：对纯硫铝酸盐水泥体系及硫铝酸盐水泥、矿粉、粉煤灰二元或三元复合胶凝材料体系在不同水胶比下的抗压强度进行研究。结果表明，当不同胶凝材料体系采用标准稠度对应的水胶比时，体系抗压强度最高；XRD、SEM分析证明，在该水胶比时，体系中的主要水化产物AFt（钙矾石）较多，体系结构也更为紧密，因而抗压强度最高。
    关键词：硫铝酸盐水泥；标准稠度；抗压强度；XRD；SEM
    中图分类号：TQ172.1+2     文献标识码：A        文章编号：1001-702X（2017）10-0035-04

Study on strength effect of sulphoaluminate cement paste with different admixtures
WANG Yanhao，LI Jie，LIAO Guosheng，WU Qiong，LIAO Yishun
（School of Urban Construction，Wuhan University of Science and Technology，Wuhan 430065，China）

    Abstract：The compressive strength of pure sulphoaluminate cement and sulphoaluminate cement binary or ternary composited with mineral powder or fly ash were investigated. The results showed that when water-cement ratio was the value corresponding to the standard consistency，the strength of paste was the highest. It was confirmed by XRD and SEM analysis that the hydration products in the paste seemed to be much more at this water-cement ratio，and the paste structure became denser，which was account for the strength improvement.
    Key words：sulphoaluminate cement，standard consistency，compressive strength，XRD，SEM