【摘要】 通过在掺磨细矿渣粉配制的硅酸盐混合水泥中掺加0.5%～4%的氯化钠进行的试验研究表明,加入的氯离子约37%～64%与硅酸盐水泥和矿渣形成化学结合状态,24%～50%为游离状态,2%～10%为物理吸附状态;氯化钠掺量在1%以下时水泥石早期强度显著提高,具有明显的活性激发和早强作用;Cl-和SO42-互相取代产生复合化合物3CaO.Al2O3.(1-xCaCl2.xCaSO4).yH2O,其x值随水泥石中Cl-浓度的变化而变化。并且与C-S-H混合生长。更多还原

【Abstract】 The slag portland blend cement with 0.5%-4% sodium chloride was studied in this paper.It was found that:37%-64% original chloride ion with slag and portland cement formed chemical bonding state;24%-50%original chloride ion was free and 2%-10% original chloride ion was physical absorption.The early strength of cement paste was greatly increased when the content of sodium chloride was less than 1%.New product named hloride aluminum formed in the cement paste after chloride ion was added.It was also found that most calcium chloride aluminate was grown mixed with AFm and C-S-H gel,instead of existing separately.更多还原