Characteristics of electro-osmosis consolidation and resistivity evolution in soft clay reinforced with recycled carbon fibers

IF 4.7 1区 工程技术 Q1 ENGINEERING, GEOLOGICAL Geotextiles and Geomembranes Pub Date : 2024-09-17 DOI:10.1016/j.geotexmem.2024.09.006
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Abstract

This study repurposed discarded carbon fiber fabric by mechanically cutting it into short-cut carbon fibers and utilized these fibers in electro-osmosis experiments with varying lengths (5 mm, 10 mm, and 15 mm) and mixing ratios (0.05%, 0.10%, and 0.25%). The results indicated that increasing the length and mixing ratio of recycled carbon fibers effectively reduced the soil resistivity. Furthermore, incorporating an appropriate amount of carbon fibers not only reduced the energy consumption coefficient but also enhanced the electro-osmotic drainage performance. Increasing the length and mixing ratio of carbon fiber also improved the vane shear strength after electro-osmosis consolidation. To promote the application of carbon fiber in electro-osmosis consolidation and to provide support for the development of electro-osmosis consolidation theory and numerical analysis, a resistivity calculation model of carbon fiber-reinforced soil during the electro-osmosis process was developed based on the Ohm's Law and tunneling transmission theory. The model elucidates that during the electro-osmosis process, soil resistivity is influenced by the increase in barrier thickness, which consequently raises the tunneling transmission resistance.

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用再生碳纤维加固的软粘土中的电渗固结和电阻率演变特征
本研究通过机械方法将废弃的碳纤维织物切割成短切碳纤维,并将这些纤维用于不同长度(5 毫米、10 毫米和 15 毫米)和不同混合比(0.05%、0.10% 和 0.25%)的电渗实验。结果表明,增加回收碳纤维的长度和混合比例可有效降低土壤电阻率。此外,加入适量的碳纤维不仅能降低能耗系数,还能提高电渗排水性能。增加碳纤维的长度和混合比还能提高电渗固结后的叶片剪切强度。为了促进碳纤维在电渗固结中的应用,并为电渗固结理论和数值分析的发展提供支持,基于欧姆定律和隧道传输理论,建立了碳纤维加固土壤在电渗过程中的电阻率计算模型。该模型阐明了在电渗过程中,土壤电阻率受屏障厚度增加的影响,从而提高了隧道传输阻力。
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来源期刊
Geotextiles and Geomembranes
Geotextiles and Geomembranes 地学-地球科学综合
CiteScore
9.50
自引率
21.20%
发文量
111
审稿时长
59 days
期刊介绍: The range of products and their applications has expanded rapidly over the last decade with geotextiles and geomembranes being specified world wide. This rapid growth is paralleled by a virtual explosion of technology. Current reference books and even manufacturers' sponsored publications tend to date very quickly and the need for a vehicle to bring together and discuss the growing body of technology now available has become evident. Geotextiles and Geomembranes fills this need and provides a forum for the dissemination of information amongst research workers, designers, users and manufacturers. By providing a growing fund of information the journal increases general awareness, prompts further research and assists in the establishment of international codes and regulations.
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