With the requirements for the ductility, toughness and durability of structures increasing and the promotion of sustainable development, low-cost and high-performance building materials are highly valued by the engineering community. In this work, 12 groups of engineered cementitious composites (ECC) made with polyvinyl alcohol fibre (PVAF) were prepared. The specimens were divided into two test groups according to the origin of the PVAF: group JK-II (a well-known commercial fibre) and group CL-C (low-cost fibre). Test group JK-II was used to study the effect of waste glass powder on uniaxial tensile and thin-plate flexural properties. The CL-C test group was used to study the coupled effect of curing condition and expansion agent on uniaxial tensile and flexural properties. The PVAF-ECC prepared in this study all showed good tensile and flexural properties. The enhanced effect of JK-II fibre on the uniaxial tensile and flexural properties of the PVAF-ECC was analysed and the advantages and disadvantages of the materials used in groups JK-II and CL-C were comprehensively investigated. Future research directions and application suggestions for the PVAF-ECC are introduced.

中文翻译：

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配合比和固化条件对聚乙烯醇纤维ECC力学性能的影响

随着对结构延展性、韧性和耐久性要求的提高以及可持续发展的推动，低成本、高性能的建筑材料受到工程界的高度重视。在这项工作中，制备了12组由聚乙烯醇纤维（PVAF）制成的工程水泥复合材料（ECC）。根据 PVAF 的来源，将样品分为两个测试组：JK-II 组（一种著名的商业纤维）和 CL-C 组（低成本纤维）。试验组JK-II用于研究废玻璃粉对单轴拉伸和薄板弯曲性能的影响。CL-C试验组用于研究固化条件和膨胀剂对单轴拉伸和弯曲性能的耦合影响。本研究制备的 PVAF-ECC 均表现出良好的拉伸和弯曲性能。分析了JK-II纤维对PVAF-ECC单轴拉伸和弯曲性能的增强作用，综合考察了JK-II和CL-C组材料的优缺点。介绍了PVAF-ECC未来的研究方向和应用建议。