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首页> 美国卫生研究院文献>Materials >A Novel Strengthening Method for Damaged Pipeline under High Temperature Using Inorganic Insulation Material and Carbon Fiber Reinforced Plastic Composite Material
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A Novel Strengthening Method for Damaged Pipeline under High Temperature Using Inorganic Insulation Material and Carbon Fiber Reinforced Plastic Composite Material

机译：无机绝缘材料和碳纤维增强塑料复合材料在高温下加固管道的新方法

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In this paper, a strengthening method for the damaged high-temperature steel pipeline using inorganic insulation material which was confined by carbon fiber reinforcement plastic (CFRP) composite materials was proposed. Two inorganic insulation materials were composed of magnesium phosphate cement (MPC) mixing with perlite and vermiculite powders, respectively. The influences of insulation material composites with various ratios of the perlite or vermiculite powder were discussed, in terms of compressive strength and thermal conductivity coefficients of inorganic insulation materials. The insulation materials confined by carbon fiber reinforced polymer jackets for enhancing the mechanical behavior were also investigated. From the experimental results, the main finding of the work was that the inorganic insulation materials added to the perlite powder represented greater insulation capability than added vermiculite ones under the condition of the same compressive strength. Different ratios of perlite inorganic insulation material cylinders with the dimension of ϕ 10 cm × 20 cm were confined by one layer and two layers of CFRP composite material. The compressive strength of the specimens increased by 258%–927% after using 1-layer CFRP composite material and increased by 480%–1541% after applying 2-layer CFRP composite material. A peak strength prediction model of insulation materials confined by CFRP was proposed, and it was found that the proposed model accurately predicted the peak strength of the inorganic insulation material cylinder. Finally, a verification test of the strengthening method for damaged high-temperature pipeline was performed to prove that the proposed strengthening method is feasible.
机译：提出了一种用碳纤维增强塑料（CFRP）复合材料限制无机绝缘材料加固高温钢管的方法。两种无机绝缘材料由分别与珍珠岩和ver石粉混合的磷酸镁水泥（MPC）组成。从无机绝缘材料的抗压强度和导热系数的角度，探讨了不同比例的珍珠岩或various石粉对绝缘材料复合材料的影响。还研究了由碳纤维增强聚合物护套限制的绝缘材料，以增强机械性能。从实验结果看，工作的主要发现是在相同的抗压强度条件下，添加到珍珠岩粉末中的无机绝缘材料比添加的ver石具有更高的绝缘能力。尺寸ϕ 10 cm×20 cm的不同比例的珍珠岩无机保温材料圆筒由一层和两层CFRP复合材料限制。使用1层CFRP复合材料后，样品的抗压强度提高了258％–927％，而使用2层CFRP复合材料后，样品的抗压强度提高了480％–1541％。提出了碳纤维增强塑料约束保温材料的峰值强度预测模型，发现该模型能够准确预测无机保温材料圆柱体的峰值强度。最后，对高温管道受损的加固方法进行了验证测试，证明了所提出的加固方法是可行的。

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