实现超过13%的超延展性和成本效益的橡胶碱活化渣基无水泥复合材料

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment Pub Date : 2025-04-01 DOI:10.1016/j.dibe.2025.100677

Quang-Hiếu Lương , Huy Hoàng Nguyễn , Phương Hoàng Nguyễn , Se-Eon Park , Youngsang Kim , Bang Yeon Lee

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引用次数: 0

摘要

介绍了一种以普通聚乙烯（NPE）和绢聚乙烯（SPE）纤维为增强材料的新型超韧性碱活化渣基橡胶复合材料（UD-RSCs）。设计了5种不同砂胶比（s/b）和水胶比（w/b）以及纤维增强剂的混合料。然后测量UD-RSCs的密度、抗压强度和拉伸性能。通过矿物学分析确定UD-RSCs的典型形态和化学成分。当砂胶比为0.8时，PE纤维增强UD-RSC的拉伸应变能力可达15.6%，高于钢筋的最小拉伸能力。SPE纤维增强UD-RSC的拉伸应变容量为13.4%。通过综合比较，与pe - ud - rsc和其他再生纤维增强的韧性复合材料相比，SPE-UD-RSC在保持高机械性能的同时，表现出了更好的可持续性。通过矿物学分析，阐明了强健的纤维桥接行为，并证实C-A-S-H凝胶是UD-RSCs的主要水化产物。

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Achieving ultra-ductility exceeding 13 % and cost efficiency with rubberized alkali-activated slag-based cement-free composites

This study introduces novel ultra-ductile rubberized alkali-activated slag composites (UD-RSCs) reinforced by normal polyethylene (NPE) and selvage PE-based (SPE) fibers. Five mixtures with different sand-to-binder (s/b) and water-to-binder (w/b) ratios, as well as fiber reinforcements were designed. Then density, compressive strength, and tensile properties of UD-RSCs were measured. Mineralogy analysis was also performed to determine typical morphologies and chemical compositions of UD-RSCs. The PE fiber-reinforced UD-RSC with a sand-to-binder ratio of 0.8 showed a tensile strain capacity of up to 15.6 %, higher than the minimum extensibility of rebar. SPE fiber-reinforced UD-RSC also showed a tensile strain capacity of 13.4 %. Based on a comprehensive comparison, SPE-UD-RSC exhibited improved sustainability while maintaining high mechanical performance compared to PE-UD-RSCs and other ductile composites reinforced by recycled fibers. Through mineralogy analyses, robust fiber bridging behavior was elucidated and C-A-S-H gels were confirmed as the dominant hydration product of UD-RSCs.

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.