摘要
根据机械力化学原理,采用高能球磨技术处理矿渣,通过扫描电镜和X射线衍射分析以及强度试验,研究了处理后的矿渣粉体的粒度、密度、结构和形貌变化及强度特性.结果表明:球磨处理后的矿渣极度细化,大颗粒块状玻璃体破裂、表面粗糙化,水化活性明显提高;单纯矿渣的水化强度很低,掺入5%～15%的Ca(OH)2后强度显著提高,并且随粉磨时间的增加而不断增大,球磨1h时水化强度增幅最大,球磨6h后早期强度可提高5倍以上.
According to the theory of mechanochemistry, highenergy ball milling was used to treat the slag. SEM and XRD and compressive strength test were used to study the change of the particle size, density, morphology and activity of the slag powder. Results show that with increasing ball milling time the particle size of the slag decreases remarkably, the biggerhard lumpish slag glasses break, the surface become rougher, and the hydration activity of the slag is improved significantly. The compressive strength of pure slag is very low, but it is improved much when 5%～15% Ca(OH)2 is added. The compressive strength rises gradually with increasing ball milling time. The rising rate of compressive strength is maximum when the powder is treated for 1 hour. And the early strength of the slag treated for 6 hours increases by 5 times than that of the slag not treated.
出处
《建筑材料学报》
EI
CAS
CSCD
2003年第2期157-161,共5页
Journal of Building Materials
关键词
高能球磨
矿渣
显微结构
水化
机械力化学
胶凝材料
mechano-chemistry
high-energy ball milling
slag
micro-structure
hydration characteristics
