INFLUENCE OF RECONSTRUCTION SLAG ON THE PROPERTIES OF CEMENT-BASED MATERIALS

摘要：

　　Melting the mixture of municipal solid waste incineration(MSWI)fly ash and slag with mass ratio 3: 7 at 1400℃ for 60min,and then obtained reconstruction slag by air cooling.The effect of reconstruction slag with the dosages of 10%,30%,50%on the properties of cement-based materials were studied,and the activity of reconstruction slag and raw slag was also contrasted.Furthermore,the influence mechanism of reconstruction slag on the properties of cement-based materials was analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD).It turned out that the compressive strength showed a trend of decrease after the first increase of the specimen with the increased of reconstruction slag,the compressive strength reach to 45.0 MPa at curing 28 d with the dosage of 30%.The activity of reconstruction slag was higher than the raw slag.Microscopic analysis showed that reconstruction slag contains a certain amount of gehlenite crystals,under alkaline environment,second hydration occur to reconstruction slag,and it generate large numbers of hydration products to make a high strength.

关键词： cement-based materials MSWI fly ash reconstruction slag properties

作者: Lei Zhang Yanan Zhang Fangfang Wu Ruihua Liang

作者单位: College of Materials Science and Engineering,Tianjin Chengjian University,Tianjin 300384,China;Key L College of Materials Science and Engineering,Tianjin Chengjian University,Tianjin 300384,China

会议类型: 国际会议

会议名称: 2017 5th International Symposium on Computer and Electrical Engineering(2017年第五届计算机与电气工程国际学术研讨会)

会议地点: 长沙

会议语种:英文

页码: 71-76

在线出版日期: 2017-10-29（万方平台首次上网日期，不代表论文的发表时间）