Sustainable Fire-Spalling-Resistant Concrete

可持续的耐火剥落混凝土

• 批准号: EP/N019555/1
• 负责人: Shan-Shan Huang
• 金额: $ 12.7万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FN019555%2F1
• 关键词: Sustainable; Fire; Spalling; Resistant; Concrete

Fire-induced spalling of concrete experienced by constructed facilities such as tunnels, buildings and bridges has been shown to cause catastrophic failure, and to lead to huge economic costs and potential loss of life. However, despite the consequences, fire-induced spalling remains one of the least well understood aspects of concrete behaviour. This project aims to develop an improved understanding of fire-induced spalling of modern high-performance concrete, and to find a sustainable spalling-mitigation solution by using fibres recovered from end-of-life tyres. To achieve this, X-Ray Computed Tomography (XRCT) will be used to detect the microstructural changes in concrete due to thermo-mechanical loading and to examine the underlying mechanics of spalling and the spalling-mitigation mechanism of polymer fibre in general and that of the Reused Tyre Polymer Fibre (RTPF) in particular (the latter offering major economic and sustainability benefits). Also, a state-of-the-art fire testing system will provide more controllable heating and hence more reliable and repeatable test results than provided by conventional furnace testing. The high-quality test results collected will form a database for use in this and future research projects. Numerical modelling will be performed, allowing key aspects of the experimentally observed behaviour to be simulated, and preparing the ground for the eventual development of a predictive spalling model. Preliminary design guidance for fire-spalling-resistant concrete with RTPF will also be developed, in order to expedite the uptake of this technology by practitioners.

隧道、建筑物和桥梁等已建设施所经历的火灾引起的混凝土剥落已被证明会导致灾难性的破坏，并导致巨大的经济损失和潜在的生命损失。然而，尽管有这样的后果，火灾引起的剥落仍然是混凝土行为中最不为人所知的方面之一。该项目旨在加深对现代高性能混凝土火灾引起的剥落的了解，并通过使用从报废轮胎中回收的纤维找到可持续的缓解剥落的解决方案。为此，将使用X射线计算机层析成像(XRCT)来检测混凝土在热机械载荷作用下的微观结构变化，并检查剥落的基本机理以及聚合物纤维，特别是可重复使用的轮胎聚合物纤维(RTPF)的剥落缓解机制(后者提供了重大的经济和可持续效益)。此外，最先进的火灾测试系统将提供更可控的加热，因此比传统的炉子测试提供更可靠和更可重复的测试结果。收集的高质量测试结果将形成一个数据库，用于本次和未来的研究项目。将进行数值模拟，以模拟实验观察到的行为的关键方面，并为最终开发预测剥落模型奠定基础。还将制定使用RTPF的耐火剥落混凝土的初步设计指南，以加快从业人员对这项技术的采用。

项目成果

Recycled Tyre Polymer Fibres to Mitigate Heat- induced Spalling of Concrete

再生轮胎聚合物纤维可减轻热引起的混凝土剥落

• 发表时间: 2017
• 作者: Figueiredo F

Mitigation of fire-induced spalling of concrete using recycled tyre polymer fibre

使用再生轮胎聚合物纤维减轻火灾引起的混凝土剥落

• 发表时间: 2019
• 作者: Yifan Li

Proceedings of the 6th International Workshop on Concrete Spalling due to Fire Exposure

第六届火灾引起的混凝土剥落国际研讨会论文集

• 发表时间: 2019
• 作者: Dr Shan-Shan Huang

Effects of Recycled Steel and Polymer Fibres on Explosive Fire Spalling of Concrete

• DOI: 10.1007/s10694-019-00817-9
• 发表时间: 2019-09-01
• 期刊: FIRE TECHNOLOGY
• 影响因子: 3.4
• 作者: Figueiredo, Fabio P.;Huang, Shan-Shan;Burgess, Ian
• 通讯作者: Burgess, Ian

Mitigation of concrete spalling in fire using recycled fibres from waste tyres

使用废轮胎再生纤维减轻火灾中的混凝土剥落

• 发表时间: 2017
• 作者: Figueiredo F