掺混合材的硫铝酸盐水泥体系r强度效应研究

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.%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 ac-count for the strength improvement.