工业废渣改良泥水盾构渣土的路用性能试验研究
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作者:
作者单位:

1.东南大学 交通学院,南京 210096;2.佛山市交通科技有限公司,广东 佛山 528000

作者简介:

郭沁颖(1998- ),女,主要从事工业固废资源化利用研究,E-mail:220203407@seu.edu.cn。
GUO Qinying (1998- ), main research interest: resource utilization of industrial solid waste, E-mail: 220203407@seu.edu.cn.

通讯作者:

丁建文(通信作者),男,博士,教授,博士生导师,E-mail:jwding@seu.edu.cn。

中图分类号:

U416.1

基金项目:

国家自然科学基金(51978159);“十二五”国家科技支撑计划(2015BAB07B06)


Road performance investigation of slurry shield tunnel residue improved by industrial waste residues
Author:
Affiliation:

1.School of Transportation, Southeast University, Nanjing 210096, P. R. China;2.Foshan Transportat Sci & Technol Co. Ltd., Foshan 528000, Guangdong, P. R. China

Fund Project:

National Natural Science Foundation of China (No. 51978159); National Science and Technology Support Project in “Twelfth Five-Year” (No. 2015BAB07B06)

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    摘要:

    为实现泥水盾构废弃渣土的资源化利用,在石灰这一传统改良材料的基础上,通过掺入碱渣、脱硫石膏等工业废渣,以期将盾构渣土改良为路基填料。通过室内击实试验、CBR试验、无侧限抗压强度试验、干湿循环试验以及微观试验,研究石灰-碱渣、石灰-脱硫石膏改良盾构渣土的力学性能及其浸水稳定性与耐久性,并分析其改良机理。结果表明:掺入改良材料后,渣土的力学性能得到很大改善,水稳性与耐久性也大幅提高,具有较好的路用力学性能,其中石灰-脱硫石膏组的整体水稳性与耐久性优于石灰-碱渣组。干湿循环过程中,掺入3%脱硫石膏的试样耐久性相对较好,在循环期间仅出现细小裂缝并未贯穿试样。经过石灰与脱硫石膏等复合改良后,盾构渣土具有良好的路用力学性能,可以作为路基填筑材料使用。

    Abstract:

    This study is carried out to investigate the resource utilization of mud water shield residue. Industrial waste residues such as alkali slag and desulfurization gypsum are reasonably used to be combined with the traditional lime, in order to convert waste mud into qualified roadbed filling materials. Through the laboratory compaction tests, CBR tests, unconfined compressive strength tests, wetting-drying cycle tests and microscopic tests, the mechanical properties, immersion stability and durability of shield tunnel residue improved by lime-alkali slag and lime-desulfurization gypsum were studied, and the improvement mechanism was analyzed. The test results show that the mechanical properties of the soil were improved significantly after compound improvement. The water stability and durability were also greatly improved, with better mechanical properties for road use. Among them, the overall water stability performance and durability of the lime-desulfurization gypsum groups were better than the lime-alkali slag groups. During the wetting-drying cycles, the durability of the specimens mixed with 3% desulfurization gypsum was better, with only small cracks not penetrating the specimens during the cycles. The study shows that the shield tunnel residue has good mechanical properties after compound improvement of lime and desulfurization gypsum, and can be used as roadbed filling materials.

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郭沁颖,李白云,丁建文,陈剑刚,孙帅,马云龙.工业废渣改良泥水盾构渣土的路用性能试验研究[J].土木与环境工程学报(中英文),2025,47(2):66-75. GUO Qinying, LI Baiyun, DING Jianwen, CHEN Jiangang, SUN Shuai, MA Yunlong. Road performance investigation of slurry shield tunnel residue improved by industrial waste residues[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2025,47(2):66-75.10.11835/j. issn.2096-6717.2022.143

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  • 收稿日期:2022-09-27
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  • 在线发布日期: 2025-03-10
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