硅酸盐通报2011，Vol.30Issue(1)：19-24,49,7.
硅藻土的火山灰活性研究
Study on the Pozzolanic Activity of Diatomite
摘要
Abstract
In this paper, the influence of calcined condition on the pozzolanic activity of diatomite was determined according to ICP-OES analysis. Phase transformation, microstructure of diatomite, and mechanism of pozzolanic activity during calcination were investigated using XRD, SEM, EDS and FT-IR methods. The results indicate that mircroporous structure and Si-OH cluster in diatomite favor the pozzolanic activity, especially when calcined at 800 ℃. Layered structure of clay minerals is destroyed as a result of removal of water, which leads to a lower pozzolanic activity. After being calcined at 800 ℃ for 1 h, the proportion of pozzolanic compositions increase from 22.15％ to 37.21％. Marco-pore structure,surface structure and crystal structure of diatomite are changed in high temperature, resulting in the level of pozzolanic activity.关键词
硅藻土/火山灰活性/煅烧/物相/结构Key words
diatomite/ pozzolanic activity/ calcination/ mineral phase/ structure分类
化学化工引用本文复制引用
王浩林,李金洪,侯磊,刘芳,马玺..硅藻土的火山灰活性研究[J].硅酸盐通报,2011,30(1):19-24,49,7.基金项目
教育部新世纪优秀人才支持计划资助(NCET-08-0828) （NCET-08-0828）
矿物岩石材料国家专业实验室开放课题(08A002) （08A002）
