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本文对不同比表面积、不同石膏掺量的硫铝酸盐水泥的膨胀性能进行了研究。结果表明,硫铝酸盐水泥的比表面积、比表面积/石膏掺量的比值影响着硫铝酸盐水泥的膨胀性能,比表面积越大、比表面积/石膏掺量比值越大,硫铝酸盐水泥的膨胀率越小。其机理在于比表面积、比表面积/石膏掺量的比值控制了钙矾石的生成速度、生成量以及形貌。
In this paper, the swelling properties of sulphoaluminate cement with different specific surface area and different gypsum content were studied. The results show that the specific surface area and the ratio of specific surface area to gypsum content of sulphoaluminate cement affect the swelling performance of sulphoaluminate cement. The larger the specific surface area is, the larger the specific surface area / gypsum content ratio is. Sulphoaluminate The smaller the expansion rate of cement. The mechanism lies in the specific surface area, the ratio of specific surface area / gypsum content controls the rate of formation of ettringite, formation and morphology.