摘要
研究了20℃和5℃时硫铝酸盐基高水填充材料的强度发展规律及微观结构,通过XRD、孔结构测试等方法研究了高水充填材料的微观结构与强度的关系,并重点研究了亚硝酸钠对高水充填材料水化产物微观结构及强度的影响.研究表明:高水充填材料的水化产物主要是以钙矾石为主的胶凝材料;亚硝酸钠具有促进硫铝酸盐水泥熟料水化和改善高水充填材料硬化体孔结构的双重作用,在5℃时这种作用更加明显.以硫铝酸盐基填充材料代替木材、钢材作为可泵性支护材料,具有凝结硬化速度快、施工方便、价廉等优点,但施工温度低于20℃时材料的性能研究报道甚少.
The strength development and the microstructure of sulpholuminate cement-based material with high water content at 20 ℃ and 5 ℃,and the relationship between the microstructure of high water content material and its strength are studied by XRD and pole structure methods. The impact of sodium nitrite on the microstructure and strength of hydrate product of high water content material is investigated. Experimental results show that hydrate product of high water content material is mainly composed of ettringite and sodium nitrite plays a positive role in accelerating sulpholuminate cement hydration and in improving the pole structure of hardenite of high water content material, especially at 5 ℃.
出处
《材料科学与工艺》
EI
CAS
CSCD
2004年第1期8-11,共4页
Materials Science and Technology
关键词
硫铝酸盐基高水填充材料
强度
微观结构
亚硝酸钠
钙矾石
水泥
high water content material
sulpholuminate cement clinker
microstructure
strength
sodium nitrite
