Vicuña Lenin, Jaramillo-Fierro Ximena, Cuenca Paúl Eduardo, Godoy-Paucar Brenda, Inga-Lafebre Jorge Daniel, Chavez Torres Jose Luis, García Juan Fernando, Guaya Diana, Febres Juan Diego
Departamento de Producción, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador.
Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador.
Polymers (Basel). 2024 Apr 19;16(8):1151. doi: 10.3390/polym16081151.
This study aimed to investigate the sustainable use of recycled plastics, specifically polypropylene (PP) and high-density polyethylene (HDPE), in the manufacture of geogrids for geotechnical and civil engineering applications. Plastics were collected from a recycling center, specifically targeting containers used for food, cleaning products, and other domestic packaging items. These plastics were sorted according to the Möbius triangle classification system, with HDPE (#2) and PP (#5) being the primary categories of interest. The research methodologically evaluates the mechanical properties of PP/HDPE (0/100, 25/75, 50/50, 75/25 and 100/0% /) composites through tensile and flexural tests, exploring various compositions and configurations of geogrids. The results highlight the superiority of pure recycled HDPE processed into 1.3 mm thick laminated yarns and hot air welded for 20 to 30 s, exhibiting a deformation exceeding 60% in comparison to the PP/HDPE composites. Through SolidWorks Simulation, it was shown that the adoption of a trigonal geogrid geometry optimizes force distribution and tensile strength, significantly improving slope stabilization efficiency. Based on the results obtained, a laboratory-scale prototype geogrid was developed using an extrusion process. The results underscore the importance of careful composite design and yarn configuration selection to achieve the desired mechanical properties and performance in geogrid applications. It emphasizes the potential of recycled plastics as a viable and environmentally friendly solution for stabilizing slopes, contributing to the reduction in plastic waste and promoting sustainable construction practices.
本研究旨在调查再生塑料，特别是聚丙烯（PP）和高密度聚乙烯（HDPE），在制造用于岩土工程和土木工程应用的土工格栅中的可持续利用情况。塑料取自一个回收中心，特别针对用于食品、清洁产品和其他家庭包装物品的容器。这些塑料根据莫比乌斯三角形分类系统进行分类，其中HDPE（#2）和PP（#5）是主要关注的类别。该研究通过拉伸和弯曲试验，从方法学上评估了PP/HDPE（0/100、25/75、50/50、75/25和100/0%）复合材料的力学性能，探索了土工格栅的各种组成和结构。结果突出了纯再生HDPE加工成1.3毫米厚的层压纱并进行20至30秒热风焊接的优越性，与PP/HDPE复合材料相比，其变形超过60%。通过SolidWorks模拟表明，采用三角形土工格栅几何形状可优化力的分布和拉伸强度，显著提高边坡稳定效率。基于所获得的结果，使用挤出工艺开发了一个实验室规模的土工格栅原型。结果强调了精心设计复合材料和选择纱线结构对于在土工格栅应用中实现所需力学性能和性能的重要性。它强调了再生塑料作为一种可行且环保的边坡稳定解决方案的潜力，有助于减少塑料废物并促进可持续建设实践。
