- 目录
- 混凝土与制品
- 首页
高碳铬铁渣用作混凝土粗骨料的探索性研究
作者：周永祥1，2，贺阳1，2，刘晨3，郑旭3，马郁1，2，谢小元1，2
（1.中国建筑科学研究院有限公司，北京 100013；2.建筑安全与环境国家重点实验室，北京 100013；3.中国建筑材料科学研究总院有限公司，北京 100024）
摘要：研究了高碳铬铁渣粗骨料对混凝土工作性、抗压强度、受压弹性模量、电通量、长期收缩以及可浸出重金属含量的影响。结果表明，从体积安定性、重金属浸出毒性角度看，高碳铬铁渣用作混凝土骨料不存在重大技术风险；在适当的配合比下，高碳铬铁渣粗骨料对混凝土各方面性能均无明显不利作用。因此，高碳铬铁渣从技术性能角度具备作为粗骨料应用的可行性。
关键词：高碳铬铁渣；骨料；混凝土性能；可浸出重金属含量
中图分类号：TU528.041 文献标识码：A 文章编号：1001-702X（2021）01-0005-04
Exploratory research of high carbon ferrochromium slag as coarse aggregate in concrete
ZHOU Yongxiang1，2，HE Yang1，2，LIU Chen3，ZHENG Xu3，MA Yu1，2，XIE Xiaoyuan1，2
（1.China Academy of Building Research Co. Ltd.，Beijing 100013，China；
2.State Key Laboratory of Building Safety and Environment，Beijing 100013，China；
3.China Building Materials Academy Co. Ltd.，Beijing 100024，China）
Abstract：In this paper，the effects of high carbon ferrochrome slag as coarse aggregate on workability，compressive strength，modulus of elasticity under static compression，electric flux，long-term shrinkage and content of extractable heavy metal of concrete were investigated. The results indicate that serious risk on technology will not arise when regarding the high carbon ferrochrome slag as coarse aggregate in concrete from the perspective of volume stability and extractable heavy metal. Under the appropriate mix ratio，the high carbon ferrochrome slag，if acting as coarse aggregate，will not bring obvious adverse effects into concrete. Hence，it will be feasible to consider the high carbon ferrochrome slag as coarse aggregate of concrete from the technical point of view.
Key words：high carbon ferrochrome slag，aggregate，properties of concrete，content of extractable heavy metal