在生物聚合物处理过的膨胀性土壤中可持续地再利用碎面膜

IF 2.6 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Kulanthaivel Ponnusamy, Krishnaraja Ammapalyam Ramasamy, Soundara Balu, Vinodhkumar Shanmugasundaram, Selvakumar Subburaj, Shakthivel Mukesh Thottipalayam, Rini Prathishtha Rajaram
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引用次数: 0

摘要

近年来,由于废旧口罩的不可生物降解性,其安全处置已成为一个难题。本研究的重点是废旧口罩作为加固材料的再利用潜力,以提高用黄原胶和瓜尔胶等生物聚合物处理过的膨胀土的工程特性。口罩被切碎成 5 × 5 毫米的碎片,以 0.5%的体积添加到膨胀土中。为评估用不同剂量的黄原胶和瓜尔豆胶处理的碎面膜片(SFMC)加固膨胀土的工程行为,进行了一系列实验室测试,如非收缩抗压强度(UCS)测试、劈裂拉伸测试、自由膨胀指数(FSI)测试、膨胀压力、膨胀潜能测试和加州承载比(CBR)测试。实验结果表明,SFMC 的加入明显改善了土壤的工程特性。在膨胀土中添加 2% 的黄原胶和瓜尔胶时,抗压强度和抗拉强度达到最大值。在黄原胶和瓜尔豆胶的最佳生物聚合物含量为 2% 时,抗压强度的最大值分别为 369-437 千帕。使用黄原胶和瓜尔豆胶稳定膨胀土的自由膨胀指数百分比分别降至 73.6%-75.9%。经处理土壤的膨胀压力降低了 90.2-94.1%。在所有测试中,瓜尔豆胶的效率都高于黄原胶。因此,研究结果证实了 SFMC 在生物聚合物稳定膨胀性土壤中的有效应用,这将为安全处理废旧口罩提供有益的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Sustainable Reuse of Shredded Face Mask in Biopolymer Treated Expansive Soil

Sustainable Reuse of Shredded Face Mask in Biopolymer Treated Expansive Soil

In recent years, the safe disposal of used face masks has become troublesome due to their non-biodegradable nature. This study focuses on the reuse potential of used face masks as a reinforcement to enhance the engineering properties of expansive soil treated with biopolymers such as Xanthan Gum and Guar Gum. The face masks were shredded into 5 × 5 mm chips and added to expansive soil at 0.5% by volume. A series of laboratory tests such as Unconfined Compressive Strength (UCS) Test, Splitting Tensile Test, Free swell Index (FSI) Tests, Swelling Pressure, Swelling Potential Tests, and California—Bearing Ratio (CBR) tests were performed for the evaluation of engineering behaviour of Shredded Face Mask Chips (SFMC) reinforced expansive soil treated with various dosages of Xanthan Gum and Guar Gum. The experimental test results showed that the inclusion of SFMC significantly improved the engineering characteristics of the soil. The maximum compressive strength and tensile strength have been attained at 2% inclusion of Xanthan gum and Guar gum into the expansive soil. The maximum values of compressive strength at optimum biopolymer content of 2% Xanthan gum and Guar gum were 369–437 kPa, respectively. The free swell index percentage for stabilized expansive soils with xanthan gum and guar gum decreased to 73.6–75.9%, respectively. The swell pressure of the treated soil showed up to a reduction of 90.2–94.1%. In all the tests, Guar Gum exhibited greater efficiency when compared to Xanthan Gum. Thus, the investigation results confirmed the efficient use of SFMC in biopolymer stabilization of expansive soil that would lead to the beneficial way for the safe disposal of used face masks.

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来源期刊
CiteScore
5.40
自引率
0.00%
发文量
104
审稿时长
1.7 months
期刊介绍: International Journal of Environmental Research is a multidisciplinary journal concerned with all aspects of environment. In pursuit of these, environmentalist disciplines are invited to contribute their knowledge and experience. International Journal of Environmental Research publishes original research papers, research notes and reviews across the broad field of environment. These include but are not limited to environmental science, environmental engineering, environmental management and planning and environmental design, urban and regional landscape design and natural disaster management. Thus high quality research papers or reviews dealing with any aspect of environment are welcomed. Papers may be theoretical, interpretative or experimental.
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