Abstract：Due to the presence of phosphates and ammonium nitrogen compounds in manganese slag, its application lead to delayed hydration of the paste and the formation of voids in ordinary Portland cement, affecting the strength properties of the cement paste. This study uses the sulfates in electrolytic manganese slag as an activator to prepare supersulfated cement, and removes the ammonium nitrogen compounds through a drying process to explore the effect of the ammonium nitrogen compounds on the hydration reaction of the system. The results showed that when the amount of untreated manganese slag replaced in supersulfated cement was less than 4%, the compressive strength of the supersulfated cement increased with the increase in dosage. However, when the dosage exceeded 4%, the compressive strength deteriorated. After removing ammonium nitrogen through drying, the compressive strength of the manganese slag showed improvement at a replacement level less than 6%. The compressive strength of the supersulfated cement with 6% pretreatment manganese slag was 10.1 MPa higher than that of the blank sample at 3 days, and 8.3 MPa higher at 28 days
金 青, 马 明, 魏世红, 胡月阳. 电解锰渣对过硫水泥抗压强度性能和水化过程的影响[J]. 水泥杂志, 2025, 0(06): 8-.
JIN Qing, et al.. Influence of electrolytic manganese slag on compressive strength performance and hydration process of supersulfurized cement. Journal of Cement, 2025, 0(06): 8-.
2025, Vol. 0 
