Analysis of the performance improvement of sandy soil in roadbed by waste residue containing Ba2+
Journal: Journal of Building Technology DOI: 10.32629/jbt.v8i1.5094
Abstract
Barium slag is a solid waste generated as a by-product during the industrial production of barium carbonate. Classified as hazardous industrial waste due to its high content of barium oxide and other harmful constituents, it poses potential environmental risks. This research systematically characterized the fundamental physical and chemical properties of barium slag through an integrated approach of laboratory experiments and numerical simulation. Subsequently, a comprehensive experimental evaluation was conducted to assess its feasibility for utilization in road engineering, encompassing tests for slake durability, compaction characteristics, strength performance, deformation behavior, stability, resilient modulus, and shear strength. Furthermore, a processing technique was developed to convert barium slag into a sand-like material suitable for use as subgrade filler. The findings demonstrate that processed barium slag can effectively replace natural sandy soil as a subgrade material, meeting requisite road performance standards while offering advantages of enhanced strength and improved stability. separate 0-5 mm sized particles, control the dust content less than 1%.
Keywords
barium slag; feasibility analysis; sandy soil
Funding
Supported by Scientific and Technologial Innovation Programs of Higher Education Institutions in Shanxi
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[2] Chen P, Ma B G, Tan H B, et al. Utilization of barium slag to improve chloride-binding ability of cement-based material[J]. Journal of Cleaner Production, 2021, 283:124612.
[3] Yang T T, Wang N, Gu H N, et al. Froth flotation separation of carbon from barium slag: Recycling of carbon and minimization of slag[J]. Waste Management, 2021, 120:108-113.
[4] Cappuyns V. Barium (Ba) leaching from soils and certified reference materials[J]. Applied Geochemistry, 2018, 88:68-84.
[5] Vaidya R, Kodam K, Ghole V, et al. Validation of an in situ solidification/stabilization technique for hazardous barium and cyanide waste for safe disposal into secured landfill[J]. Journal of Environmental Management, 2010, 91(9):1821-1830.
[6] Mahedi M, Cetin B, Dayioglu A Y. Effect of cement incorporation on leaching characteristics of elements from fly ash and slag treated soils[J]. Journal of Environmental Management, 2020, 253:109720.
[7] Guo T F, Gu H N, Ma S C, et al. Increasing phosphate sorption on barium slag by adding phosphogypsum for non-hazardous treatment[J]. Journal of Environmental Management, 2020, 270:110823.
[8] Ministry of Ecology and Environment of the People's Republic of China. National List of Hazardous Wastes (2021)[J]. Gazette of the State Council of the People's Republic of China, 2021(4):18-46. (in Chinese).
[9] Department of Science and Technology Standards, State Environmental Protection Administration. Identification Standards for Hazardous Wastes — Identification of Leaching Toxicity: GB 5085.3—2007[S]. Beijing: China Standards Press, 2007. (in Chinese).
[10] Huang X, Xin C, Li J S, et al. Using hazardous barium slag as a novel admixture for alkali activated slag cement[J]. Cement and Concrete Composites, 2022, 125:104332.
[11] Xie Y J, Sun Z Y, Han T T, et al. Highly efficient utilization of industrial barium slag for carbon gasification in direct carbon solid oxide fuel cells[J]. International Journal of Hydrogen Energy, 2021, 46(74):37029-37038.
Copyright © 2026 Fuping Hu, Meilin Deng, Tiejun Shen, Dongdong Zhou
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