用于减轻 3D 打印混凝土塑性收缩的原位交联纳米二氧化硅增强藻酸盐生物纺织品

IF 10.3 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Additive manufacturing Pub Date : 2025-03-25 DOI:10.1016/j.addma.2025.104753

Kailun Xia , Yuning Chen , Zedi Zhang , Wei Wang , Yu Chen , Lutao Jia , Zijian Jia , Shitao Quan , Yamei Zhang

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In-situ crosslinked nano SiO2 reinforced alginate bio-textile for mitigating plastic shrinkage in 3D printed concrete

Absence of formwork leaves 3D printed concrete (3DPC) with rapid water loss and plastic shrinkage. For water preservation, a strategy based on in-situ generated bio-textile film on 3DPC surface is proposed herein. The conception was achieved by adopting nano SiO₂ (NS) reinforced sodium alginate (NSSA) onto 3DPC surface. Triggered by calcium ions on 3DPC surface, in-situ crosslinking of NSSA can generate a water preservation film, where NS serves as reinforcer for film densification. Moreover, through pozzolanic reaction, NS can induce further crosslinking between C-S-H and alginate biopolymer matrix, forming a bio-textile film with enhanced water vapor impermeability, mechanical property and surface adhesion on 3DPC. Within 3 hours and 24 hours after concrete printing, this strategy significantly reduced 3DPC plastic shrinkage by 74 % and 59 %, and preserved water in 3DPC from evaporation by 72.8 % and 75.4 %. This study provides a promising new approach for mitigating plastic shrinkage of 3DPC.

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来源期刊

Additive manufacturing Materials Science-General Materials Science

CiteScore

19.80

自引率

12.70%

发文量

648

审稿时长

35 days

期刊介绍： Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.