钢渣–熟石灰碳化砖的特性  

Characteristics of Carbonated Steel Slag-slaked Lime Brick

作　　者：曹伟达[1] 杨全兵[1] 

机构地区：[1]同济大学材料科学与工程学院,先进土木工程材料教育部重点实验室,上海200092

出　　处：《硅酸盐学报》2013年第10期1395-1400,共6页Journal of The Chinese Ceramic Society

基　　金：国家科技支撑计划(2006BAF02A24)

摘　　要：研究了钢渣-熟石灰碳化砖的强度、干燥收缩、吸水率和安定性等特性。结果表明：钢渣-熟石灰砖在碳化后，强度可提高3～4倍，干燥收缩和吸水率显著降低，安定性问题得到解决。钢渣-熟石灰碳化砖的最优熟石灰／钢渣比为0．2，其质量指标满足MU20级建筑砖的要求。此外，采用X射线衍射，压汞法和热重差热分析法分析了钢渣-熟石灰碳化砖的碳化作用机理和环保效果。The characteristics of carbonated steel slag-slaked lime （SS-SL） brick （i.e., strength, drying shrinkage, water absorption and soundness） were mainly investigated. The results indicate that the strength of the SS-SL brick after carbonation is increased by 3-4 times, the drying shrinkage is significantly reduced and the soundness problem is solved. The optimal slaked lime/steel slag ratio for the carbonated SS-SL brick is 0.2. The properties of the as-prepared brick can meet the requirements for MU20 grade building bricks in the Chinese standard. Furthermore, the related mechanism of the carbonated SS-SL brick and the environmental effects were analyzed.

关 键 词：建筑砖 钢渣 熟石灰 性能 化学固碳 

分 类 号：X757[环境科学与工程—环境工程]