Assessment on eco-solidified alkali residue reinforced soft soils for intelligent subgrade constructions

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL Transportation Geotechnics Pub Date : 2025-02-09 DOI:10.1016/j.trgeo.2025.101516

Jianhua Li , Zicheng Zhang , Xu Liu , Xiaolei Jiao , Jiale Li

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Abstract

The realization of carbon neutrality can be effectively promoted by the utilization of industrial solid waste in road construction. The alkali residue (AR) is used to modify the soft soil to fulfill the requirement of subgrade construction. A series of compaction tests is performed by considering the coarse- and powdered-reinforced AR soils. The unconfined compressive strength (UCS) is tested with various contents of AR and curing ages. A dataset is established by summarizing the data from literature and laboratory tests. An intelligent model is proposed to design the treatment plan of filling soils in terms of UCS. The environmental impact of chloride diffusion is analyzed. Soluble chloride ions are immobilized using ground granulated blast slag (GGBS) and steel slag to achieve eco-friendly reinforcement of soft soil. The results of the study provide guidance for optimizing soft soil reinforcement performance for subgrade construction, improving resource utilization and reducing soil salinity.

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碱渣生态固化加筋软土智能路基施工评价

工业固体废物在道路建设中的利用可以有效地促进碳中和的实现。利用碱渣对软土进行改性，以满足路基施工的要求。对粗加筋和粉加筋AR土进行了一系列压实试验。试验了不同AR含量和不同龄期的无侧限抗压强度（UCS）。通过总结文献和实验室试验数据，建立数据集。提出了一种基于UCS的填筑土处理方案设计智能模型。分析了氯化物扩散对环境的影响。利用矿渣颗粒和钢渣对可溶性氯离子进行固定化，实现软土的生态加固。研究结果对优化软土地基加固性能、提高资源利用率、降低土壤盐分具有指导意义。

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来源期刊

Transportation Geotechnics Social Sciences-Transportation

CiteScore

8.10

自引率

11.30%

发文量

194

审稿时长

51 days

期刊介绍： Transportation Geotechnics is a journal dedicated to publishing high-quality, theoretical, and applied papers that cover all facets of geotechnics for transportation infrastructure such as roads, highways, railways, underground railways, airfields, and waterways. The journal places a special emphasis on case studies that present original work relevant to the sustainable construction of transportation infrastructure. The scope of topics it addresses includes the geotechnical properties of geomaterials for sustainable and rational design and construction, the behavior of compacted and stabilized geomaterials, the use of geosynthetics and reinforcement in constructed layers and interlayers, ground improvement and slope stability for transportation infrastructures, compaction technology and management, maintenance technology, the impact of climate, embankments for highways and high-speed trains, transition zones, dredging, underwater geotechnics for infrastructure purposes, and the modeling of multi-layered structures and supporting ground under dynamic and repeated loads.