活性激发过程中粉煤灰硅氧多面体结构变化的核磁共振研究

NMR Research on Silicon-Oxide Polyhedron Structure in Activated Fly Ash

采用固相核磁共振 (NMR)技术 ,对粉煤灰在化学激发剂作用下硅氧多面体结构的变化进行了研究。结果表明 :激发剂使得粉煤灰玻璃体硅氧多面体网络结构部分由集中的高聚态向分散的低聚态转变 ,粉煤灰活性被有效地激发 ,水化产物中有较多的组群状硅氧结构体。

NMR technology was used to research the silicon-oxide polyhedron structure in activated fly ash. Test results indicated that the structure of fly ash glasses had been changed from concentrated high-polymerization to scattered low-polymerization by the role of activator. During this process of effectively activating, lots of silicon-oxide bodies with end groups were produced.