Physico-Mechanical Characterisation of an Earth Bar and Bamboo Fiber Composite Material for Road Construction  

作　　者：Yvette Tankpinou Kiki Koffi Judicaël Agbelele Fernando Kpomahou Georgette Monleme Yvette Tankpinou Kiki;Koffi Judicaël Agbelele;Fernando Kpomahou;Georgette Monleme(Processes and Technological Innovation Laboratory (LaPIT), National University of Science, Technology, Engineering and Mathematics (UNSTIM), Lokossa, Benin;Multidisciplinary Research Laboratory for Technical Education (LARPET), National University of Technological Sciences, Engineering and Mathematics, Lokossa, Benin;Civil Engineering Test and Study Laboratory (L2EGC), National University of Technological Sciences, Engineering and Mathematics, Abomey, Benin)

机构地区：[1]Processes and Technological Innovation Laboratory (LaPIT), National University of Science, Technology, Engineering and Mathematics (UNSTIM), Lokossa, Benin [2]Multidisciplinary Research Laboratory for Technical Education (LARPET), National University of Technological Sciences, Engineering and Mathematics, Lokossa, Benin [3]Civil Engineering Test and Study Laboratory (L2EGC), National University of Technological Sciences, Engineering and Mathematics, Abomey, Benin

出　　处：《Open Journal of Composite Materials》2025年第1期31-43,共13页复合材料期刊(英文)

摘　　要：Road construction in Africa is faced with a shortage of quality materials, leading to delays and increased costs. Traditional materials, such as clay soils of the bar soil type, have inadequate properties for pavement sub-base layers, particularly in terms of bearing capacity. This study explores a composite material combining bar soil and bamboo fibers to improve the mechanical performance of bar soil, offering a sustainable and cost-effective solution. The Tori-Bossito bar soil was characterised by particle size analysis, Atterberg limits, Proctor compaction tests and the California Bearing Ratio (CBR). The results show that this material is a class A2 sandy-clay soil with a CBR of 18, which is insufficient for foundation layers requiring a CBR of over 30. To improve its performance, Sèmè-Kpodji bamboo fibers, 30 to 100 microns in diameter and 3 to 5 cm long, were incorporated at rates of 0.9% to 2.7%. The optimum mix, with 2.4% fiber, has a CBR of 35, a dry density of 1.92 t/m3 and a moisture content of 12.4%. This reinforced material is suitable as a base course for low-traffic roadways.Road construction in Africa is faced with a shortage of quality materials, leading to delays and increased costs. Traditional materials, such as clay soils of the bar soil type, have inadequate properties for pavement sub-base layers, particularly in terms of bearing capacity. This study explores a composite material combining bar soil and bamboo fibers to improve the mechanical performance of bar soil, offering a sustainable and cost-effective solution. The Tori-Bossito bar soil was characterised by particle size analysis, Atterberg limits, Proctor compaction tests and the California Bearing Ratio (CBR). The results show that this material is a class A2 sandy-clay soil with a CBR of 18, which is insufficient for foundation layers requiring a CBR of over 30. To improve its performance, Sèmè-Kpodji bamboo fibers, 30 to 100 microns in diameter and 3 to 5 cm long, were incorporated at rates of 0.9% to 2.7%. The optimum mix, with 2.4% fiber, has a CBR of 35, a dry density of 1.92 t/m3 and a moisture content of 12.4%. This reinforced material is suitable as a base course for low-traffic roadways.

关 键 词：Bamboo Fibers Bar Soil Sub-Base Low Traffic Mechanical Properties 

分 类 号：TB3[一般工业技术—材料科学与工程]