铁路施工废弃物环境属性及其再生产品性能影响浅析

王海舰

doi:10.13205/j.hjgc.202501005

铁路施工废弃物环境属性及其再生产品性能影响浅析

doi: 10.13205/j.hjgc.202501005

王海舰

中铁十五局集团有限公司, 浙江湖州 313009

详细信息

作者简介:
王海舰(1971-),男,高级工程师。253650278@qq.com

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- 文章访问数: 19
- HTML全文浏览量: 5
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2024-01-29
- 录用日期: 2024-05-26
- 修回日期: 2024-03-10
- 网络出版日期: 2025-03-21
- 刊出日期: 2025-03-21

Analysis on influence of environmental properties of rail transit construction waste and performance of recycled products

WANG Haijian

China Railway 15th Bureau Group Co., Ltd., Huzhou 313009, China

摘要

摘要: 面向我国铁路施工建设过程中所产生工程渣土、钻渣等废弃物对场地周边环境的污染风险,以钻渣、渣土和泥饼为研究目标,分析不同废弃物重金属元素构成、矿物成分等资源环境属性。以再生陶粒作为施工废弃物资源化目标产物,探究不同废弃物配比下,再生陶粒表观密度、堆积密度和浸出行为的变化规律,解析不同再生产品的微观形态。结果表明:1)不同施工废弃物中重金属元素含量以及矿物成分等资源环境属性具有明显差异;2)受不同施工废弃物掺和量影响,再生陶粒表观密度、堆积密度具有一定区别;3)相较于原材料,再生陶粒中重金属元素浓度存在有一定的上升,因此需考虑再生陶粒对于生态环境的污染性。
- 轨道交通 /
- 固体废弃物 /
- 资源环境属性 /
- 再生利用
Abstract: A substantial quantity of waste, including engineering residue, drilling residue, and mud cake, is inevitably generated during railway construction in China. Improper disposal of this waste not only consumes significant land resources but also poses severe environmental pollution risks. This study focuses on the drilling slag, slag, and mud cake produced during railway construction. Firstly, we analyzed the resource and environmental properties of these wastes, such as heavy metal content and mineral composition. Based on this analysis, different proportions of construction waste and ceramisite raw materials were mixed, and recycled ceramisite was prepared using a sintering method. By measuring physical properties including apparent density and bulk density, we examined the effect of varying waste ratio on the characteristics of recycled ceramics. Additionally, we investigated the leaching behavior of regenerated ceramics and evaluated the concentrations of heavy metals through leaching toxicity test to assess the potential ecological pollution risk. The results demonstrated that: 1) significant differences existed in heavy metal concentration and mineral composition among different types of construction waste, providing a basis for waste classification and resource utilization. 2) the physical properties of recycled ceramics, such as apparent density and bulk density, varied depending on the amount of construction waste, necessitating controlled waste ratios based on specific application requirements. 3) compared to the raw materials, the concentrations of heavy metals in reclaimed ceramics was increased, posing an ecological pollution risk that requires appropriate controlling measures.
- rail transit /
- solid waste /
- resource environment attribute /
- recycling

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