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首页> 外文会议>The 22nd International Conference on Solid Waste Technology and Management(ICSW 2007) >Studies on Compacted Soil with Fiber Reinforcement as a Landfill Cover System
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Studies on Compacted Soil with Fiber Reinforcement as a Landfill Cover System

机译：纤维增强压实垃圾填埋系统研究

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Compacted clay soil is widely used in landfills and waste impoundments to cap new waste disposal units, and to close old waste disposal sites. The concept of reinforcing soil masses by including some kind of fiber to improve durability and strength of the soil. The present study focused on the influence of C_3H_6 (polypropylene) fiber reinforcement on compaction characteristics, strength and hydraulic conductivity. The percentage of fiber used is varied, and the test results are analyzed to search for the mix proportions that lead to an optimum soil-fiber mix. The results of this study indicate that the impact of fiber content on the result of compaction curves vary with the variation of fiber content. The optimum water content and the maximum dry density changed with addition of fiber. Initially dry density increased with increased in fiber content, reaching its peak at fiber content of 1.0%. The optimum water content varied within approximately 13% of the initial value of the natural soil. The unconfined compressive strength also increased significant with increasing fiber content. It was found that the unconfined compressive strength increased by about two and half times with the addition of 1.0% fiber content. Flexible-wall hydraulic conductivity tests were conducted to assess the hydraulic conductivity of the soil-fiber mixture. Fiber contents up to 0.8 % maintained the hydraulic conductivity within acceptable levels.
机译：压实的粘土被广泛用于垃圾掩埋场和垃圾场，以封盖新的废物处理单元，并关闭旧的废物处理场。通过包含某种纤维来提高土壤的耐久性和强度来增强土壤质量的概念。本研究集中于C_3H_6（聚丙烯）纤维增强对压实特性，强度和水力传导率的影响。所用纤维的百分比是变化的，并且分析测试结果以寻找导致最佳土壤纤维混合的混合比例。该研究结果表明，纤维含量对压实曲线结果的影响随纤维含量的变化而变化。最佳水含量和最大干密度随纤维的添加而变化。最初，干密度随纤维含量的增加而增加，在纤维含量为1.0％时达到峰值。最佳水分含量在天然土壤初始值的约13％范围内变化。随着纤维含量的增加，无侧限抗压强度也显着增加。已经发现，通过添加1.0％的纤维含量，无侧限抗压强度提高了约两倍和一半。进行了柔性壁水力传导率测试，以评估土壤纤维混合物的水力传导率。纤维含量高达0.8％，可将水力传导率保持在可接受的水平内。

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