摘要
以硫酸盐为主要激发剂,辅以少量硅酸盐水泥激发矿渣,破坏矿渣玻璃体的空间结构,促进矿渣水化,研制出一种低污染环境友好型胶凝材料——磷石膏基超硫水泥。使用新型活性聚合铝为添加剂解决超硫水泥早期强度较低、凝结时间长的问题。对活性聚合铝改性超硫水泥的凝结时间、长期力学性能作了研究;使用水化热、XRD、SEM等测试技术分析其改性提升机理。研究结果表明:掺入活性聚合铝可显著加快超硫水泥早期水化速率,促进胶凝材料水化,提高硬化胶凝材料密实度。
The paper use the sulfate and PI cement as activator to stimulate the activity of slag. Destruct the spatial structure of the slag and developing a green cementitious material named phosphorus gypsum based super sulfated cement （SSC）. Aiming at the problem of SSC early strength is low and the setting time is longer, puts forward a new type of active poly-aluminum enhanced SSC. On the condition of poly-aluminum and alkali activator interaction, setting time and long-term mechanical properties of SSC improved. The heat of hydration, XRD and SEM technology were used to analysis mechanism. Study found that the incorporation of poly-aluminum can improve the early hydration rate, advance the hydration exothermic peak. Hydration products of cement slurry become richer, and cementitious material hydration like ettringite and C-S-H gel volume increased at 28 day.
出处
《武汉理工大学学报》
CAS
北大核心
2016年第2期1-6,共6页
Journal of Wuhan University of Technology
基金
中央高校自主创新研究基金(142201001)
关键词
矿渣
超硫水泥
聚合铝
水化机理
抗压强度
slag~ super sulfated cement
poly-aluminum
hydration mechanism
compressive strength
