研究了混合材掺量40%下明矾石（石膏）-沸石不同比例对抗折强度、抗压强度及流动性的影响，阐明了明矾石（石膏）-沸石体系作为混合材对水泥水化的影响机制。研究表明，明矾石与石膏的最佳比例为2:1，在此比例下明矾石作为混合材的力学性能最优。沸石比例越小，相同龄期下硬化体强度越低。28d龄期，沸石掺量25%时抗压强度为47.03MPa，相对于空白样降低12.97%；沸石掺量35%时仍然能达到46.61MPa，与空白样相比下降了11.90%。流动性与沸石掺量呈线性关系，沸石掺量越高，流动性越差。综合力学性能及流动性，确定混合材掺量40%下明矾石（石膏）：沸石最佳配比为10(5):25。沸石越多，体系反应活性越高，相同龄期下水化产物越多，反应越快，强度越高。

The effects of different ratios of alunite (gypsum) to zeolite on flexural strength, compressive strength, and fluidity with a proportion of 40% are investigated, and the influence mechanism of alunite(gypsum)-zeolite system as a mixture on cement hydration is explained. The results show that the optimal ratio of alunite to gypsum is 2:1, and the mechanical properties of alunite as a mixture are the best at this ratio. The smaller the proportion of zeolite, the lower the strength of the hardened cement at the same age. At the age of 28-day, the compressive strength is 47.03MPa when the zeolite content is 25%, which is 12.97% lower than that of blank sample. When the zeolite content is 35%, the 28-day compressive strength can still reach 46.61MPa, which is 11.90% lower than that of the blank. The fluidity has a linear relationship with the zeolite content. The higher the zeolite content, the worse the fluidity. Based on the mechanical properties and fluidity, the optimal ratio of alunite (gypsum) to zeolite with a proportion of 40% is determined to be 10(5):25. The more zeolite, the higher the reaction activity of the system. The more hydration products at the same age, the faster the reaction and the higher the strength.

TU528

绿色建筑材料国家重点实验室自立项目（ZA-60）