On the use of recycled polyethylene terephthalate fiber in one-part geopolymer stabilized soft soil: Tensile performance and sustainability analysis

IF 6.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment Pub Date : 2025-03-01 DOI:10.1016/j.dibe.2025.100641

Zihan Zhou , Shuo Li , Guo Hu , Jun Wu , Chuanqin Yao , Fujun Niu

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引用次数: 0

Abstract

Aiming to promote low-carbon transformation of construction materials and waste upcycling solutions, this study adopted one-part geopolymer (OPG) as a sustainable binder for stabilizing soft soil. The recycled polyethylene terephthalate (RPET) fiber was also incorporated to enhance the stabilized soil's tensile strength. The effects of fly ash (FA) content, RPET fiber content and length on the tensile performance of the stabilized soil were investigated to reveal the synergistic mechanism between FA and RPET fiber. Results showed that the FA enhanced fiber-matrix deformation compatibility and improved fiber dispersion through its lubrication effects, significantly boosting the contribution of RPET fibers to the improvement of tensile strength of the stabilized soil. Life cycle assessment indicated that OPG-stabilized soil reduced carbon emissions, energy consumption, and costs by 78%, 58%, and 50% compared to ordinary Portland cement (OPC)-stabilized soil. The findings support OPG and RPET fiber's practical application in eco-friendly ground improvement and waste management.

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再生聚对苯二甲酸乙二醇酯纤维在单组分地聚合物稳定软土中的应用：拉伸性能和可持续性分析

为了促进建筑材料的低碳转型和垃圾的升级利用解决方案，本研究采用单组分地聚合物（OPG）作为稳定软土的可持续粘合剂。加入再生聚对苯二甲酸乙二醇酯（RPET）纤维，提高稳定土的抗拉强度。研究了粉煤灰（FA）含量、RPET纤维含量和长度对稳定土拉伸性能的影响，揭示了FA与RPET纤维的协同作用机制。结果表明：FA通过其润滑作用增强了纤维-基质的变形相容性，改善了纤维的分散性，显著增强了RPET纤维对稳定土抗拉强度提高的贡献；生命周期评价表明，与普通波特兰水泥（OPC）稳定土相比，opg稳定土的碳排放、能源消耗和成本分别降低了78%、58%和50%。研究结果支持OPG和RPET纤维在环保地面改善和废物管理方面的实际应用。

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.