Fire Performance of Sustainable 3D-Printed Ultra-High-Performance Concrete with Recycled and Natural Materials

采用再生和天然材料的可持续 3D 打印超高性能混凝土的防火性能

• 批准号: 2882136
• 金额: --
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2882136
• 关键词: Fire; Performance; Sustainable; 3D; Printed

3D printing concrete has drawn increasing attention as they can substantially enhance the efficiency of construction, whereas it tends to have issues with ductility and re-bar provision. The use of UltraHigh-Performance Concrete (UHPC) can resolve these problems. But still, the embeddedcarbon of such 3D printed UHPC is very high and so there is an urgent need to lower it. In addition, the fire spalling performance of 3D printed UHPC with greener components has never been studied.This project will investigate the fire spalling behaviour of greener 3D printed UHPC with cement replacement materials, recycled aggregates and alternative fibres. The mechanisms of heat-induced spalling and mitigation measures will be studied. The work will also be complemented bythe development of a predictive model for heat-induced spalling and to produce design guidance for the proposed concrete.

3D打印混凝土由于可以显著提高施工效率而受到越来越多的关注，但它往往存在延性和钢筋供应方面的问题。超高性能混凝土(UHPC)的使用可以解决这些问题。但是，这种3D打印超高性能混凝土的嵌入碳非常高，因此迫切需要降低它。此外，更环保的3D打印超高性能混凝土的防火性能从未被研究过。本项目将研究使用水泥替代材料、再生骨料和替代纤维的更环保的3D打印超高性能混凝土的火灾剥落性能。将研究热致剥落的机理和缓解措施。这项工作还将通过开发热诱导剥落的预测模型来补充，并为拟议的混凝土制定设计指南。