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首页> 外文期刊>Applied clay science >Swelling potential reduction of Spanish argillaceous marlstone Facies Tap soil through the addition of crumb rubber particles from scrap tyres
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Swelling potential reduction of Spanish argillaceous marlstone Facies Tap soil through the addition of crumb rubber particles from scrap tyres

机译：通过添加废旧轮胎中的碎屑橡胶颗粒，减少了西班牙泥质水硬岩相的溶胀潜力

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摘要

During construction of road and railway projects, expansive soils may be encountered. Their use as construction material for embankments presents difficulties, due to their tendency to swell or shrink. Traditional solutions include mixing soil with cement or quicklime, or to import materials from other locations. As an alternative to these solutions, the present paper proposes a less expensive and more sustainable solution, consisting in mixing the natural expansive soil with rubber particles obtained from scrap tyres. Especially, the "Facies Tap" (a typical soil of southeastern Spain) is studied in this paper. This soil, which is mainly a white argillaceous marlstone, is mixed with six different amounts of rubber content (2.5, 5, 10, 15, 20 and 25% in terms of weight) and submitted to several geotechnical tests, including compaction, free swelling, unidimensional consolidation, direct shear testing and undrained shear compression. The addition of rubber particles to the soil up to a 15% makes it lighter and less prone to swelling, while compressibility remains similar to the natural soil and the drained shear strength slightly increases. Based on experimental results, the optimum rubber content mixed with the soil to prevent its swelling is established at around 3%. (C) 2016 Elsevier B.V. All rights reserved.
机译：在公路和铁路项目的建设过程中，可能会遇到膨胀土。由于其膨胀或收缩的趋势，将它们用作路堤的建筑材料存在困难。传统解决方案包括将土壤与水泥或生石灰混合，或从其他位置进口材料。作为这些解决方案的替代方案，本文提出了一种更便宜，更可持续的解决方案，包括将天然膨胀土与从废轮胎获得的橡胶颗粒混合。特别是，本文研究了“ Facies Tap”（西班牙东南部的典型土壤）。这种土壤主要是白色的泥质灰泥岩，混有六种不同含量的橡胶（以重量计分别为2.5％，5％，10％，15％，20％和25％），并经过了多项岩土测试，包括压实，自由溶胀，一维固结，直接剪切测试和不排水剪切压缩。向土壤中添加最多15％的橡胶颗粒使其更轻，更不容易膨胀，而可压缩性仍与天然土壤相似，排水的剪切强度略有增加。根据实验结果，确定与土壤混合以防止其膨胀的最佳橡胶含量约为3％。 （C）2016 Elsevier B.V.保留所有权利。

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