無機聚合膠脂膠合纖維應用於RC梁剪力補強之耐高溫研究

劉金衡

doi:10.6841/NTUT.2009.00078

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College of Engineering > Graduate Institute of Civil and Disaster Prevention Engineering
Engineering > Civil Engineering & Architecture Engineering
Engineering > Municipal Engineering & Environment Engineering

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無機聚合膠脂膠合纖維應用於RC梁剪力補強之耐高溫研究

On the Heat Resistance of FRP Jacket Shear Strengthened RC Beams by Geopolymer

劉金衡 , Masters　　Advisor：吳傳威　　

繁體中文 DOI： 10.6841/NTUT.2009.00078

剪力補強；高溫；無機聚合膠脂；碳纖維；玻璃纖維； Shear strengthening ； High temperature ； Geopolymer ； CFRP ； GFRP

Abstract │ Reference (81) │ Times Cited (8) │ Altmetrics

Abstract 〈TOP〉

Parallel Abstract 〈TOP〉

In the last few decades, the most common repair material used in the practical structural retrofit is epoxy. Its excellent adhesive effect has been confirmed, however, its poor heat resistant property is also well known. Preceding researches have studied the possibility of replacing epoxy by a newly developed inorganic material, namely geoplymer. A series of experiments, including the strengthening of concrete cylinders and RC beams covered by carbon fiber reinforced plastic (CFRP) and glass fiber reinforced plastic (GFRP) using geopolymer, and followed by heating resistant experiments for the same. It was found that the strengthened effect was confirmed, while for the property of heat resistance, the performance of geopolymer was much better than that of epoxy.
    In the present work, A complete experiments and comparison study based on the former studies on the effect of shear strengthened RC beams with FRP jacket using geopolymer as bond material, as well as the property of heat resistance is attempted to accomplish the statement. The parameters of the experiments included seven different temperatures, i.e. room temperature, 100℃, 250℃, 400℃, 600℃ and 710℃, 900℃, two types of covered materials (CFRP/GFRP), and two different concrete strength(2000 and 4000 psi), and the trial application of geppolymer form. The results reveal that under room temperature, the overall shear strengthened effect of the RC beams is lower than those of using epoxy. However, in all cases the common requirements of shear strengthening are considerably fulfilled. On the other hand, it is worth noting that the strengthening effect still elaborated to certain grade under high-temperature for the cases of using geopolymer. The related research results in the recent years are then confirmed.

Reference ( 81 ) 〈TOP〉

[1] Abranms, M. S. , Compressive Strength of Concrete Inatitute, SP25, Temperature and Concrete,Detroit,1973, pp.33~58.
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[2] ACI Committee 318, ACI 318-95:Building Code Requirements for Reinforced Concrete and Commentary, American Concrete Institute, Appendix A, 1995.
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[3] Birch H, Clark H. , Thermal Conductivity of Rocks and Its Dependence on Temperature and Composition. American Journal of Science, 1940, pp.238~529.
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[10] Harada T. et al. , ”Strength、elasticity and thermal properties of concrete subjected to elevated temperatures”, ACI special publication SP 34, Detroit, 1972.
連結：
[12] J. Xiao and G. konig, ”Study on concrete at high temperature in China-an overview, ” Fire Safety Journal Volume:39, Issue:1, pp.89-103, February 2004.
連結：

Times Cited (8) 〈TOP〉

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