IMPROVEMENT IN CBR VALUE OF SOIL REINFORCED WITH JUTE FIBER
IMPROVEMENT IN CBR VALUE OF SOIL REINFORCED WITH JUTE FIBER
复制标题
黄麻纤维加固土壤 CBR 值的提高
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Bagra
中科院分区：
文献类型：
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作者：
H. Singh;M. Bagra
在土木工程中使用天然纤维来改善土壤性质是有利的，因为它们便宜，当地可获得，可生物降解和生态友好。天然纤维增强土的抗拉强度、抗剪强度和其它工程性质得到显著改善。在过去的十年中，随机分布的天然和合成纤维的使用有了巨大的增长。考虑到这一点，对当地可用的（Doimukh，Itanagar，Arunachal Pradesh，印度）用黄麻纤维加固的土壤进行了实验研究。在这项研究中，土样制备在其最大干密度对应于其最佳含水量在CBR模具有和没有加强。黄麻纤维占土壤干重的百分比分别为0.25%、0.5%、0.75%和1%。在本研究中，纤维的长度取为30 mm、60 mm和90 mm，并且对于每个纤维长度考虑两种不同的直径，1 mm和2 mm。测定了土壤和黄麻纤维加固土壤的实验室CBR值。研究了纤维长度和直径对土的CBR值的影响。试验结果表明，随着纤维掺量的增加，土的CBR值增大。还观察到，增加纤维的长度和直径进一步增加了增强土壤的CBR值，并且对于直径为2mm的90mm纤维长度，这种增加在纤维含量为1%时是显著的。因此，有显着增加的CBR值与黄麻纤维增强的土壤和CBR值的增加将大大减少路面路基的厚度。
Use of natural fibre in civil engineering for improving soil properties is advantageous because they are cheap, locally available, biodegradable and eco-friendly. The natural fiber reinforcement causes significant improvement in tensile strength, shear strength, and other engineering properties of the soil. Over the last decade the use of randomly distributed natural and synthetic fiber has recorded a tremendous increase. Keeping this in view an experimental study was conducted on locally available (Doimukh, Itanagar, Arunachal Pradesh, India) soil reinforced with Jute fiber. In this study the soil samples were prepared at its maximum dry density corresponding to its optimum moisture content in the CBR mould with and without reinforcement. The percentage of Jute fiber by dry weight of soil was taken as 0.25%, 0.5%, 0.75% and 1%. In the present investigation the lengths of fiber was taken as 30 mm, 60 mm and 90 mm and two different diameters, 1 mm and 2 mm were considered for each fiber length. The laboratory CBR values of soil and soil reinforced with Jute fiber were determined. The effects of lengths and diameters of fiber on CBR value of soil were also investigated. Tests result indicates that CBR value of soil increases with the increase in fiber content. It was also observed that increasing the length and diameter of fiber further increases the CBR value of reinforced soil and this increase is substantial at fiber content of 1 % for 90 mm fiber length having diameter 2 mm.. Thus there is significant increase in CBR value of soil reinforced with Jute fiber and this increase in CBR value will substantially reduce the thickness of pavement subgrade.