College of Architecture and Civil Engineering, Qiqihar University, Qiqihar 161006, China.
College of Light-Industry and Textile Engineering, Qiqihar University, Qiqihar 161006, China.
Molecules. 2023 Jun 12;28(12):4710. doi: 10.3390/molecules28124710.
Geopolymer (GP) is environmentally friendly, has good mechanical properties and long-term workability, and has broad application prospects. However, due to the poor tensile strength and toughness of GPs, they are sensitive to microcracks, which limits their application in engineering. Fiber can be added to GPs to limit the growth of cracks and enhance the toughness of the GP. Plant fiber (PF) is cheap, easy to obtain, and abundant in source, which can be added to GP to improve the properties of composites. This paper reviews recent studies on the early properties of plant fiber-reinforced geopolymers (PFRGs). In this manuscript, the properties of PFs commonly used for GP reinforcements are summarized. The early properties of PFRGs were reviewed, including the rheological properties of fresh GPs, the early strength of PFRGs, and the early shrinkage and deformation properties of PFRGs. At the same time, the action mechanism and influencing factors of PFRGs are also introduced. Based on the comprehensive analysis of the early properties of PFRGs, the adverse effects of PFs on the early properties of GPs and the solutions were summarized.
地质聚合物（GP）具有环保、良好的机械性能和长期工作性能，具有广阔的应用前景。然而，由于 GP 的拉伸强度和韧性较差，它们对微裂纹敏感，这限制了它们在工程中的应用。可以向 GPs 中添加纤维来限制裂纹的生长并提高 GP 的韧性。植物纤维（PF）价格便宜、易于获取且来源丰富，可以添加到 GP 中以改善复合材料的性能。本文综述了近年来植物纤维增强地质聚合物（PFRG）早期性能的研究进展。在本文中，总结了常用于 GP 增强的 PF 的性能。综述了 PFRG 的早期性能，包括新拌 GPs 的流变性能、PFRG 的早期强度以及 PFRG 的早期收缩和变形性能。同时，还介绍了 PFRG 的作用机制和影响因素。通过对 PFRG 早期性能的综合分析，总结了 PF 对 GP 早期性能的不利影响及解决方案。
