钢渣制备高强度人工鱼礁混凝土  

High Strength Artifical Reefs Concrete Made from Steel Slags

作　　者：李琳琳[1,2] 李晓阳[3] 苏兴文[3] 倪文[1,2] 王中杰[1,2] 

机构地区：[1]北京科技大学土木与环境工程学院 [2]金属矿山高效开采与安全教育部重点实验室 [3]鞍钢集团矿渣开发公司

出　　处：《金属矿山》2012年第3期158-162,共5页Metal Mine

基　　金：国家海洋局海洋公益性行业科研专项经费重点项目(编号:200805030)

摘　　要：以79%的矿渣1、5%的钢尾渣、5%的脱硫石膏以及1%的水泥熟料制备的胶凝材料代替水泥,以热闷法稳定化的钢尾渣为骨料,制备出了强度达到61 MPa的人工鱼礁混凝土。在该混凝土中,水泥熟料所占比例为0.16%,钢渣比例超过了99%。利用XRD和SEM方法分析净浆的水化过程,结果表明,体系水化主要生成AFt相和C-S-H凝胶,并对强度的增长起了主要作用。79% granulated high furnace slag and 15% steel slag and 5% flue gas desulphurization （ FGD ） gypsum was mixed with 1% cement clinker to produce a cementitious material. The ordinary portland cement can be totally substituted by such a mixed cementitious material with iron and steel slags as its major components in preparing the concrete for building high-strength artificial reefs. A concrete with a compressive strengh of 61 MPa can be prepared by using such a mixture as a cementitious material and steel slag grains as its fine and coarse aggregats which have been stubilized by a hotsimmering method. The cement clinker content of the concrete was 0.16%, and solid waste ratio reached over 99%. Hydration processes of net slurry were analysized by XRD and SEM methods. The results show that the early hydration products in the system are mainly AFt and C-S-H gel. The strength growth is mainly contributed by these two phases.

关 键 词：钢尾渣 胶凝材料 人工鱼礁混凝土 

分 类 号：TQ172.11[化学工程—水泥工业]