Fire Protection of Concrete Tunnel Linings with Waste Tyre Fibres

Fire Protection of Concrete Tunnel Linings with Waste Tyre Fibres
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废旧轮胎纤维混凝土隧道衬砌的防火

DOI:
10.1016/j.proeng.2017.11.103
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发表时间:
2017
期刊:
Procedia Engineering
影响因子:
--
通讯作者:
Figueiredo F
Figueiredo F
中科院分区:
--
文献类型:
--
作者:
Figueiredo F

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火灾引起的隧道混凝土爆炸剥落造成的损失可能是巨大的;它可能导致巨大的经济成本和潜在的人员伤亡。因此,混凝土隧道衬砌的结构防火在隧道设计中占有重要地位。聚丙烯纤维已用于混凝土中,以防止混凝土暴露在火中发生爆炸性剥落。另一方面,全世界产生了数千吨聚合物纤维,作为报废轮胎回收的副产品。这些纤维的储存是一个问题,因为它是易燃的、密度低(因此体积非常大)并且可以被风带走并污染周围环境。它们也太结块或被橡胶污染而无法找到任何替代用途,并且通常通过焚烧进行处理。从轮胎中回收的聚合物纤维具有与制造纤维相同的高质量和耐用性。寻找在混凝土中引入这些纤维的方法可能会减少原生纤维的使用,并提供更环保的缓解剥落解决方案。本文展示了这项研究的初步结果,表明使用这些再生纤维代替人造聚丙烯来防止火灾剥落的潜力。
The damages caused by fire-induced explosive spalling of concrete in tunnels can be tremendous; it could result in enormous economic cost and potential loss of human life. For this reason, the structural fire protection of concrete tunnel linings plays an important role in the tunnel design. Polypropylene fibres have been used in concrete to prevent explosive spalling of concrete exposed to fire. On the other hands, thousands of tonnes of polymer fibres are generated worldwide as a by-product of the recycling of end-of-life tyres. Storage of these fibres is a problem, since it is flammable, of low density (and so very large in volume) and can be carried away by wind and pollutes the surrounding environment. They are also too agglomerated or contaminated with rubber to find any alternative use, and are generally disposed of by incineration. The polymer fibre recycled from tyres has equal high quality and durability as manufactured fibres. Finding ways of introducing these fibres in concrete can potentially reduce the use of virgin fibres and delivery a more environmental-friendly spalling-mitigation solution. This paper shows the preliminary outcomes of this research, which indicates the potential of using these recycled fibres to prevent fire spalling instead of manufactured polypropylene.
DOI: 10.14359/51682362
发表时间: 2011
期刊: SP-276: Durability Enhancements in Concrete with Fiber Reinforcement
影响因子: --
作者:
J. Barros;L. Lourenço;A. Alves
通讯作者: A. Alves
再生轮胎聚合物纤维可减少火灾剥落
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
Shan;Harris Angelakopoulos;K. Pilakoutas;I. Burgess
通讯作者: I. Burgess
标题:废轮胎纤维在混凝土火灾剥落缓解中的再利用
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
Shunqi Hou;Shan;K. Pilakoutas;I. Burgess
通讯作者: I. Burgess
使用废轮胎再生纤维减轻火灾中的混凝土剥落
DOI: --
发表时间: 2017
期刊: --
影响因子: --
作者:
Figueiredo F
通讯作者: Figueiredo F