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通过研究含有粉煤灰、沸石和矿渣的水泥胶砂试样因碱-硅酸反应所引起的膨胀和微观开裂特征表明:复合矿物材料(粉煤灰、沸石和矿渣)在低碱水泥和高活性集料中并不能完全消除水泥胶砂试样中的碱-硅酸反应,但减少了胶砂试样的膨胀率和膨胀破坏;且随着复合材料的增加,胶砂试样的膨胀率和膨胀破坏下降,微观结构得到改善。此外还研究了复合矿物材料对水泥胶砂流动性和强度的影响。
By studying the swelling and micro-cracking characteristics of cement mortar samples containing fly ash, zeolite and slag due to alkali-silicic acid reaction, the results show that the composite mineral materials (fly ash, zeolite and slag) The active aggregate can not completely eliminate the alkali-silicic acid reaction in the cement mortar samples, but reduces the swelling rate and expansion failure of the mortar samples. With the increase of the composite materials, the swelling rate And swelling damage decreased, the microstructure improved. In addition, the effect of composite mineral materials on the fluidity and strength of cement mortar was also studied.