Effect of Aperture Size on the Performance of Bamboo Mat Reinforced Soil Bed

ABSTRACT

Soil reinforcement using natural materials has become popular due to the concern over the environmental issues associated with geosynthetics. Bamboo is one of the fine materials used as soil reinforcement in different forms. This paper investigates the efficacy of bamboo mats with different aperture sizes for soil reinforcement. In India, handwoven mats are utilized from ancient times onwards for various households and other applications. Bamboo mats with rectangular weaving patterns with and without aperture were used for the study. The aperture sizes are expressed in terms of the width of each strip in the bamboo mat (w). The bamboo mat with a square aperture of 0.5 w × 0.5 w, 1 w × 1 w, 2 w × 2 w, 3 w × 3 w and 4 w × 4 w were used for the study. Series of laboratory model tests were performed to assess the performance of bamboo mat reinforced soil bed. The test results show that the inclusion of bamboo mat improves the bearing capacity and reduces footing settlement. The effect of aperture size on the performance of bamboo mat reinforced soil is studied in detail and the results are presented in the paper. The formation of surface heave is considerably reduced and heave reduction factors for different mat types are also reported.

摘要

由于对土工合成材料相关环境问题的关注，使用天然材料加固土壤已成为一种流行的方法. 竹子是以不同形式加固土壤的优良材料之一. 本文研究了不同孔径的竹垫加固土壤的效果. 在印度，从远古时代起，各种家庭和其他应用都使用手摇垫. 研究中使用了有孔和无孔矩形编织图案的竹席. 孔径大小以竹席（w）中每条带的宽度表示. 研究使用的竹席的方形孔径为0.5w×0.5w、1w×1w、2w×2w、3w×3w和4w×4w. 通过一系列室内模型试验，对竹席加筋土垫层的性能进行了评价. 试验结果表明，竹席的加入提高了地基承载力，减小了地基沉降. 详细研究了孔径大小对竹席加筋土性能的影响，并给出了试验结果. 文中还介绍了不同垫面类型的减沉系数.

KEYWORDS:

• Reinforced soil
• Bamboo mat
• Laboratory model tests
• Aperture size
• Heave reduction factor