Modification of Lateritic Soil Using Waste Plastics for Sustainable Road Construction

被引:0
|
作者
Obianyo, Ifeyinwa Ijeoma [1 ]
Taiwo, Ibitayo Akintayo [1 ]
Dayyabu, Abubakar [1 ]
Mahamat, Assia Aboubakar [1 ]
Amuda, Akeem [1 ]
Muoka, Anthony [1 ]
Mambo, Abdulhameed Danjuma [1 ]
Onwualu, Azikiwe Peter [2 ]
机构
[1] Nile Univ Nigeria, Dept Civil Engn, Abuja 900108, Nigeria
[2] African Univ Sci & Technol, Dept Mech Engn, Abuja 900107, Nigeria
关键词
plastic waste; road construction; California bearing ratio; soil addictive; optimum moisture content; waste management; maximum dry density; LIME; ASH;
D O I
10.3390/polym16192689
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Lateritic soil, a prevalent geological material in tropical regions, often exhibits poor engineering properties, leading to road pavement failures. Meanwhile, the alarming rise in plastic waste poses environmental concerns. This innovative study explores the potential of utilizing waste plastics as a lateritic soil addictive for sustainable road construction. Varying percentages by weight of shredded waste plastic (2%, 4%, 6%, 8%, and 10%) were incorporated into lateritic soil samples, evaluating its effects on soil geotechnical properties. The results revealed that lateritized plastic (shredded plastic waste and lateritic soil) containing 2% shredded plastic waste gave the optimum maximum dry density of 1.985 g/cm3, and the lateritized plastic containing 10% shredded plastic waste gave the highest optimum moisture content of 18%. However, the lower California bearing ratio obtained on the addition of plastic waste showed that the lateritized plastic is relatively weak and can only be used for roads with low traffic. The incorporation of shredded plastic waste into lateritic soil for stabilization is a promising polymer science-based method. By reducing the need for conventional materials and diverting plastic waste from landfills, this approach contributes to a more environmentally friendly infrastructure supporting the achievement of United Nation Sustainable Development Goals.
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页数:14
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