摘要
选取了4种粉煤灰,根据化学组成、矿物组成及特性指标将其分为高钙型、中钙型、低钙高铝型及低钙中铝型粉煤灰。采用化学选择性溶解法研究了不同粉煤灰在水泥浆体中反应程度的差异。结果表明,在3d龄期时,不同粉煤灰在水泥浆体中的反应程度均很小;在7d龄期时,各粉煤灰的反应程度大小顺序为:高钙型>中钙型>低钙高铝型>低钙中铝型;28d龄期时,各粉煤灰的反应程度大小顺序为:中钙型>高钙型>低钙高铝型>低钙中铝型;至90d龄期时,各粉煤灰的反应程度大小顺序变为:低钙高铝型>中钙型>高钙型>低钙中铝型。
Four different composition fly ash, high calcium content, medium calcium content, low calcium high aluminum content, and low calcium median aluminum content, had been selected to compare their degree of hydration with the selective solution method. The results showed that the reaction degree of fly ash in cement-fly ash system with all of these different composition were very low at 3d. The sequence of reaction degree of different fly ashes were： high calcium type〉median calcium type〉 low calcium high aluminum type〉low calcium median aluminum type （7d）; medium calcium type〉high calcium type〉low calcium high aluminum type〉low calcium medium aluminum type （28d）; and low calcium high aluminum type 〉 medium calcium type〉 high calcium type〉low calcium medium aluminum type（90d）.
出处
《水泥》
CAS
2015年第4期7-10,共4页
Cement
基金
国家自然科学基金项目(51102221
51272244)
关键词
粉煤灰
选择性溶解法
反应程度
fly ash
selective solution method
reaction degree
