Gowthaman Sivakumar, Nakashima Kazunori, Kawasaki Satoru
Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
Materials (Basel). 2018 Apr 4;11(4):553. doi: 10.3390/ma11040553.
Incorporating sustainable materials into geotechnical applications increases day by day due to the consideration of impacts on healthy geo-environment and future generations. The environmental issues associated with conventional synthetic materials such as cement, plastic-composites, steel and ashes necessitate alternative approaches in geotechnical engineering. Recently, natural fiber materials in place of synthetic material have gained momentum as an emulating soil-reinforcement technique in sustainable geotechnics. However, the natural fibers are innately different from such synthetic material whereas behavior of fiber-reinforced soil is influenced not only by physical-mechanical properties but also by biochemical properties. In the present review, the applicability of natural plant fibers as oriented distributed fiber-reinforced soil (ODFS) and randomly distributed fiber-reinforced soil (RDFS) are extensively discussed and emphasized the inspiration of RDFS based on the emerging trend. Review also attempts to explore the importance of biochemical composition of natural-fibers on the performance in subsoil reinforced conditions. The treatment methods which enhances the behavior and lifetime of fibers, are also presented. While outlining the current potential of fiber reinforcement technology, some key research gaps have been highlighted at their importance. Finally, the review briefly documents the future direction of the fiber reinforcement technology by associating bio-mediated technological line.
由于考虑到对健康的地质环境和子孙后代的影响，将可持续材料应用于岩土工程的情况日益增多。与水泥、塑料复合材料、钢铁和灰烬等传统合成材料相关的环境问题，使得岩土工程需要采用替代方法。最近，天然纤维材料取代合成材料作为一种可持续岩土工程中的模拟土壤增强技术已得到广泛应用。然而，天然纤维与合成材料本质上不同，纤维增强土的性能不仅受物理力学性质影响，还受生化性质影响。在本综述中，广泛讨论了天然植物纤维作为定向分布纤维增强土（ODFS）和随机分布纤维增强土（RDFS）的适用性，并基于新趋势强调了RDFS的启发意义。综述还试图探讨天然纤维的生化组成对地下增强条件下性能的重要性。同时也介绍了提高纤维性能和寿命的处理方法。在概述纤维增强技术当前潜力的同时，突出了一些关键研究差距及其重要性。最后，通过关联生物介导技术路线简要记录了纤维增强技术的未来发展方向。
