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Performance comparison of conventional biplanar and low-cost alternative geocomposites for drainage

机译：常规双平面和低成本排水土工复合材料的性能比较

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摘要

Geocomposites for drainage are easy to transport and install in the field. Thesenadvantages are particularly important in regions of the world with poor transportation infrastructurenand less specialised labour. However, the cost of geocomposites for drainage can limit their use innsuch regions. In this context, alternative materials can be used for the production of low-cost andnenvironmentally friendly geocomposites for drainage. This paper compares the performance of somentypes of conventional biplanar low-discharge geocomposites and alternative geocomposites inntransmissivity tests. The conventional geocomposites had a geonet or a geospacer as drainage core,nwhereas the alternative geocomposites had drainage cores made of bottle caps or tyre strips. Thenresults showed similar performance for conventional and alternative geocomposites. It was alsonobserved that for the discharge capacity of the geocomposites, a sand layer over 0.8 m thick wouldnbe required in most cases for normal stresses up to 100 kPa and under confined flow conditions.nThe results validated the use of alternative core materials, which may reduce the cost ofngeocomposites for drainage, particularly in regions where these products are not available or arenexpensive.
机译：用于排水的土工复合材料易于在现场运输和安装。这些优势在世界上交通基础设施薄弱，劳动力少的地区尤其重要。然而，用于排水的土工复合材料的成本会限制其在此类地区的使用。在这种情况下，替代材料可用于生产低成本和环境友好的排水土工复合材料。本文比较了传统双平面低流量土工复合材料和其他土工复合材料在非透射率测试中的性能。常规的土工复合材料具有一个土工网或一个土工间隔层作为排水核心，而其他的土工复合材料具有由瓶盖或轮胎条制成的排水核心。结果表明，常规和替代土工复合材料的性能相似。还没有观察到，对于土工复合材料的排放能力，在大多数情况下，对于最大应力为100 kPa且在密闭流动条件下，都不需要超过0.8 m厚的砂层。排泄复合材料的成本，特别是在这些产品不可用或价格不贵的地区。

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  • 来源
    《Geosynthetics International》 |2013年第3期|226-237|共12页
  • 作者

    C. A. da Silva; and E. M. Palmeira;

  • 作者单位

    1Civil Engineer Engevix Engenharia S/A Alameda Mamore´ 989/218 Alphaville 06454-901 Barueri SPBrazil Telephone: +55 11 3336 3704 Telefax: +55 11 2106 0161 E-mail:cassio.andre.silva@gmail.com2Professor of Civil Engineering Department of Civil and Environmental Engineering University ofBrasilia 70910-900 Brasilia DF Brazil Telephone: +55 61 3107 0969 Fax: +55 61 3273 4644E-Mail: palmeira@unb.br (Corresponding author);

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  • 正文语种 eng
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  • 关键词

    Geosynthetics; Drainage; Geocomposites; Transmissivity; Alternative Construction materials;

    机译：土工合成材料;引流;土工复合材料;透射率替代建筑材料;

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