Sesay Taiwo, Xie Yuekai, Chen Yue, Xue Jianfeng
School of Engineering and Technology, UNSW, Canberra, ACT 2612, Australia.
Polymers (Basel). 2025 Apr 25;17(9):1170. doi: 10.3390/polym17091170.
Rammed earth (RE), despite being an ancient method of construction, has smoothly integrated into contemporary civil engineering due to its compatibility with current sustainability requirements for housing structures. However, typical RE needs some improvements to fully realize its potential as both a structurally effective and environmentally friendly building technique. As a result, multiple bio-inspired enhancement methods have been suggested to substitute traditional cement or lime stabilizers. This review examines the various efforts made in the past decade to biologically stabilize natural soil for the construction of RE. It provides a brief overview of the different bio-based materials utilized in this area but primarily concentrates on their effects on the mechanical strength and water durability of RE structures. The review also addresses current obstacles that prevent the widespread industrial adoption of this valuable earth-building method and identifies potential directions for future research. Overall, the available literature on the mechanical performance and durability of bio-based rammed earth (BRE) shows encouraging outcomes. Nonetheless, various issues, such as the absence of thorough data on the discussed topics, issues related to the inherent properties of soil and biomaterials, and doubts regarding the reliability of durability evaluation methods, have been identified as factors that could lead to a lack of confidence among RE practitioners in adopting bio-based treatments. This study will provide a solid foundation for future researchers aiming to advance BRE technology, thus enhancing sustainability within the construction sector.
夯土（RE）尽管是一种古老的建筑方法，但由于其与当前住房结构可持续性要求的兼容性，已顺利融入当代土木工程。然而，典型的夯土需要一些改进，以充分发挥其作为一种结构有效且环保的建筑技术的潜力。因此，人们提出了多种受生物启发的增强方法来替代传统的水泥或石灰稳定剂。本综述考察了过去十年中为生物稳定天然土壤以用于夯土建筑所做的各种努力。它简要概述了该领域使用的不同生物基材料，但主要关注它们对夯土结构机械强度和耐水性的影响。该综述还讨论了阻碍这种有价值的土方建筑方法在工业上广泛应用的当前障碍，并确定了未来研究的潜在方向。总体而言，关于生物基夯土（BRE）机械性能和耐久性的现有文献显示出令人鼓舞的结果。尽管如此，各种问题，如所讨论主题缺乏详尽数据、与土壤和生物材料固有特性相关的问题，以及对耐久性评估方法可靠性的疑虑，已被确定为可能导致夯土从业者对采用生物基处理缺乏信心的因素。本研究将为未来旨在推进生物基夯土技术的研究人员提供坚实基础，从而增强建筑行业的可持续性。
