Turning waste into treasure: Preparation, physical properties and microstructure of alkali-activated phosphorus tailings-based fully solid waste non-sintered lightweight aggregates
文献类型：期刊论文
| 作者 | Han, Rubin4; Leng, Hongxiu4; Luo, Hui1,4; Wu, Wenbo4; Zhao, Yunrui4; Song, Bukai4; Liu, Meng4; He, Bao-Jie2,3 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2025-10-10 |
| 卷号 | 527页码:17 |
| 关键词 | Phosphorus tailings Fly ash Artificial lightweight aggregates Microstructural features Heavy metals |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2025.146693 |
| 通讯作者 | Luo, Hui(water@njfu.edu.cn) ; He, Bao-Jie(baojie.he@cqu.edu.cn) |
| 英文摘要 | Based on the potential safety risks associated with the buildup of solid waste in Lianyungang City, Jiangsu Province, and the dual challenges of high energy consumption and resource scarcity in conventional building material production. Herein, adhering to the concept of "total solid waste utilization", phosphorus tailings based artificial lightweight aggregates (PT-LWA) were fabricated through multi-component collaborative design, using phosphorus tailings (PT), fly ash (FA), soda residue (SR), and granulated blast furnace slag (GGBS) as the 100 % raw material system. A comprehensive analysis was conducted to assess how varying proportions of raw materials and diverse curing conditions influence physical performance, microstructural features, durability, release characteristics of heavy metals. Additionally, economic costs and economic emissions from PT-LWA were analyzed. The findings showed that the artificial lightweight aggregates exhibited optimal efficiency when fabricated with a raw material ratio of PT: FA: SR: GGBS = 40 %:20 %:30 %:10 % under 80 degrees C steam curing conditions. Specifically, the bulk density, softening coefficient, and 1-h water absorption of the resultant PT-LWA were 1038 kg/m3, 0.942, and 14.1 %, respectively. Additionally, the cylinder crush strength attained a value of 9.7 MPa, surpassing the performance observed in conventionally cured samples. Microstructural analysis revealed that the dominant hydration phases primarily consisted of C-(A)-S-H gel formations. They are evenly distributed on particle surfaces and form a robust colloidal structure, which further enhances its strength. The concentration values of released heavy metals are well below the thresholds defined by China's hazardous waste identification standards (GB 5085.3-2007), suggesting that PT-LWA will not cause secondary environmental pollution. |
| WOS关键词 | PHOSPHATE MINE TAILINGS ; LIFE-CYCLE ASSESSMENT ; RED MUD ; CERAMSITE |
| 资助项目 | National Natural Science Foundation of China[52108322] ; Xinjiang Biomass Solid Waste Resources Technology and Engineering Center of China[KSUGCZX2022] ; Lianyungang Key Research and Development Plan (Social Development) project of China[SF2130] ; Lianyungang Key Research and Development Plan (Industrial Outlook and Key Technology Core) project of China[CG2207] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[22KJB560001] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001586772100002 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203542]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Luo, Hui; He, Bao-Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ New South Wales, Fac Built Environm, Sydney, NSW 2052, Australia 3.Chongqing Univ, Ctr Climate Resilient & Low Carbon Cities, Sch Architecture & Urban Planning, Chongqing 400045, Peoples R China 4.Jiangsu Ocean Univ, Sch Civil & Ocean Engn, Lianyungang 222005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Rubin,Leng, Hongxiu,Luo, Hui,et al. Turning waste into treasure: Preparation, physical properties and microstructure of alkali-activated phosphorus tailings-based fully solid waste non-sintered lightweight aggregates[J]. JOURNAL OF CLEANER PRODUCTION,2025,527:17. |
| APA | Han, Rubin.,Leng, Hongxiu.,Luo, Hui.,Wu, Wenbo.,Zhao, Yunrui.,...&He, Bao-Jie.(2025).Turning waste into treasure: Preparation, physical properties and microstructure of alkali-activated phosphorus tailings-based fully solid waste non-sintered lightweight aggregates.JOURNAL OF CLEANER PRODUCTION,527,17. |
| MLA | Han, Rubin,et al."Turning waste into treasure: Preparation, physical properties and microstructure of alkali-activated phosphorus tailings-based fully solid waste non-sintered lightweight aggregates".JOURNAL OF CLEANER PRODUCTION 527(2025):17. |
入库方式： OAI收割
来源：海洋研究所
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