用再生eps -水泥混合料保温CFRP/混凝土复合材料的防火性能

A. Selvaratnam, K. K. Arachchi, J. Gamage
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引用次数: 1

摘要

EPS(膨胀聚苯乙烯)是一种成熟的绝缘材料在土木工程行业。本文对碳纤维增强聚合物(CFRP) -混凝土复合材料的EPS胶凝保温材料进行了试验和数值研究。将EPS混合保温材料应用于CFRP/混凝土复合材料中,并在高温下进行了测试。本文还建立了一个数值模型来预测CFRP/混凝土复合材料在标准火灾条件下的传热行为。模拟结果表明,粘结线在较短的时间内达到玻璃化转变温度,而绝缘构件承受的时间更长。模型结果表明,与现有的市售保温材料相比,EPS较粗的CFRP/混凝土复合材料的耐火性能可提高75% ~ 94%,EPS较细的CFRP/混凝土复合材料的耐火性能可提高83% ~ 99%。
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Fire performance of CFRP/Concrete composites insulated with recycled EPS-cement blend
EPS (Expanded Polystyrene) is a well-established insulation material in the Civil Engineering Industry. This paper presents an experimental and numerical investigation of cementitious insulation developed using EPS for Carbon Fiber Reinforced Polymer (CFRP) – Concrete composites. An EPS blended insulation was applied to the CFRP/Concrete composites and tested at elevated temperatures. A numerical model was also developed to predict the heat transfer behavior of the CFRP/Concrete composites with the developed insulation under standard fire conditions. The simulations showed that the bond line has reached the glass transition temperature within a short period of time while the insulated members withstood more time. The model results indicated that the CFRP/Concrete which composites with coarser EPS can achieve 75% to 94% of fire resistance, and composites with finer EPS can achieve 83% to 99% of fire resistance than the insulation materials already commercially available.
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