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个人信息Personal Information
副教授
博士生导师
硕士生导师
任职 : 建筑材料研究所党支部书记、副所长,岩土与建材教研室副主任
性别:女
毕业院校:大连理工大学
学位:博士
所在单位:土木工程系
学科:材料学
办公地点:大连理工大学综合试验1#楼217室
电子邮箱:ahmei@dlut.edu.cn
Properties of Recycled-Cement Produced from Waste Concrete
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论文类型:会议论文
发表时间:2011-04-09
收录刊物:EI、CPCI-S、Scopus
卷号:194-196
页面范围:1170-1175
关键字:Waste Concrete; Thermal Treatment; Sintering; Recycled-Cement
摘要:This research aims to find a new way of "turning trash into treasure" for the waste concrete. In the research, waste concrete was first ground, then, after analyzing its mineral composition, combined with some other ingredients according to the modulus of the cement clinker to become raw materials of cement. Mixed raw materials were made to be a thin cake, and then sent into high temperature furnace (HTF) to sinter for a certain period of time. Properties of cement, such as the compressive strength, required water of standard consistence and setting time were tested. The composition and microstructure of clinker were analyzed with X-ray diffraction (XRD) analysis and scanning electron microscope (SEM) analysis. The experimental results showed that the main mineral components of clinker are C(3)S, beta-C(2)S, CA(2), CA, C(3)A, C(4)AF, the compressive strength of the recycled-cement is approximately equal to P.O32.5, there exists an optimum sintering temperature for the recycled-cement clinker with a given mix ratio of raw materials and content of seed crystal added and this temperature is usually much lower than the temperature adopted wildly in the cement plants.