钢渣微粉对泡沫混凝土基本性能的影响  

Influence of steel slag on the performance of foam concrete

作　　者：贺婷[1,2] 廖洪强[1,2] 童震松[1] 宋存义[1] 邓德敏[3] 余广炜 巴特尔 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]首钢总公司能源环保产业事业部,北京100041 [3]首钢工学院建筑与环保工程系,北京100041

出　　处：《混凝土》2013年第11期75-78,共4页Concrete

基　　金：国家"863计划"重大项目(2011AA06A105)

摘　　要：研究了钢渣比表面积和掺量对钢渣复合水泥基泡沫混凝土基本性能的影响。结果表明:固定钢渣掺入量,泡沫混凝土砌块强度随钢渣比表面积增大总体呈现先增加后降低的"山"型变化,其中钢渣微粉比表面积为600 m2/kg时较为理想。固定钢渣比表面积,浆体的抗压强度随钢渣掺入量增大整体呈降低趋势。钢渣掺入量低于20%时,砌块28 d强度高于纯水泥泡沫混凝土的强度;继续增加钢渣掺入量,浆体强度降低且均低于水泥泡沫混凝土。钢渣最大掺入量达50%时,砌块28 d抗压强度仍可满足JG/T 266—2011标准对应C1级强度等级。同时,对泡沫混凝土浆体水化产物微观形貌进行SEM观察,以判断浆体的水化情况。The influence of specific surface area and quantity of steel slag on the performance of foam concrete was researched.The results indicate that the strength of foam concrete changed as the form of mountain, it means the strength increased first and then decreased with the specific surface area increasing of steel slag in the same quantity.The ideal strength appears with the specific surface area of 600 m^2/kg steel slag.When the quantity of slag is lower than 20% in the total mass, the 28 d strength of foam concrete was always higher than the pure ce-ment.However, the strength of the foam concrete decreases with increasing of slag quantity in same specific surface area.When the quantity of slag was lower than 50% in the total mass,the 28 d strength of foam concrete still can meet the C1 grade of JG/T 266-2011 standard. Meanwhile, the microstructure of hydration products of the foam concrete was observed by SEM to judge the hydration situation of the foam concrete.

关 键 词：钢渣 比表面积 掺入量 泡沫混凝土 强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]