石膏对硫铝酸盐水泥水化特性的影响
发布时间:2018-03-28 07:15
本文选题:石膏 切入点:硫铝酸盐水泥 出处:《同济大学学报(自然科学版)》2017年06期
【摘要】:研究了无水石膏及脱硫石膏对硫铝酸盐水泥抗压强度、干燥收缩率、早期水化放热及浆体组成的影响.结果表明:石膏能加速硫铝酸盐水泥的早期水化,低掺量(≤20%,质量分数)时1 d抗压强度提高,干燥收缩有所降低;随石膏掺量增加,3 d和28 d抗压强度先增后减;掺量过高时硬化浆体的后期强度甚至会倒缩;抗压强度与钙矾石生成量并无直接关联,与铝胶量成正相关.脱硫石膏可替代无水石膏配制出更优良的硫铝酸盐水泥,具有广阔前景.
[Abstract]:The effects of anhydrous gypsum and desulfurized gypsum on the compressive strength , drying shrinkage , early hydration heat release and slurry composition of sulphoaluminate cement were studied . The results show that gypsum can accelerate the early hydration of sulphoaluminate cement , increase the compressive strength of 1 d when the content of low content ( 鈮,
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