【作者】 耿栋健； 周宗辉； 程新；

【Author】 GENG Dongjian,ZHOU Zonghui,CHENG Xin(School of Materials Science and Engineering,University of Jinan,Jinan 250022)

【机构】 济南大学材料科学与工程学院；

【摘要】 钢渣含有与硅酸盐水泥熟料相类似的胶凝性矿物,本文基于混合材用途,通过向钢渣中添加组分校正材料,如粘土、石灰石等工业原料,在不同温度下对钢渣组成和结构进行重构,优化其性能。采用SEM、XRD和化学分析等测定分析了重构钢渣的形貌特征、微观结构和化学组成。通过将重构钢渣掺入普通硅酸盐水泥中,并对其进行标准稠度需水量、初终凝时间、力学性能和安定性等测定,讨论了重构钢渣活性随校正材料添加量的变化规律。结果表明,合理配比校正材料添加量,可以明显提高钢渣活性和体积安定性,重构钢渣掺量<50%时可以满足作为水泥混合材的基本要求。更多还原

【Abstract】 Steel slag contains mineral gel similar with Portland cement clinker.Reconstruction of steel slag based on adding calibration materials was studied in this article,such as clay,limestone and other industrial materials.Morphology,microstructure and chemical composition of reconstructed steel slag were carried out through chemical analysis and microstructure study,which included the use of XRD patterns and SEM.Add reconstructed steel slag to ordinary Portland cement,then water demand for normal consistency,the beginning of final setting time,mechanical properties,determination of stability were measured and the change law for activity of reconstructed steel slag with the volume of calibration materials.The results show that a reasonable amount of material ratio correction can significantly increase the volume of activity and stability of steel slag,when reconstructed steel slag content<50%,It can meet the basic requirements as cement admixture.更多还原