The rapid setting rate and unstable strength development of sulphoaluminate cement in the late stage limit its further application in engineering.Accordingly,in this study,sodium gluconate(SG)was used as a retarder.The modified sulphoaluminate cement mortar was prepared by adding silica fume.Further,the mortar's working performance,mechanical properties,and chloride ion penetration resistance were systematically investigated.The study results show that an SG dosage of 0.4％can effectively prolong the setting time and improve the fluidity of sulphoaluminate cement mortar.Moreover,the mortar's resistance to chloride penetration is increased.The working properties,mechanical properties,and chloride ion penetration resistance of sulphoaluminate mortar first increase and then decrease with the increase in silica fume content(the optimal content is 20％).
关键词
硫铝酸盐水泥/葡萄糖酸钠/硅灰/工作性能/力学性能/抗氯离子渗透性能
Key words
sulphoaluminate cement/sodium gluconate/silica fume/working properties/mechanical properties/chloride ion penetration resistance
维普
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