High temperature properties of fiber reinforced polymers and fire insulation for fire resistance modeling of strengthened concrete structures

Concrete has remarkable fire resistance properties. In the case of fire, it is found that the concrete affected by fire depends to a great extent on the intensity and duration of fire. Previous experience has shown that concrete structures are likely to have a good fire rating than structures made of other materials. Nevertheless, concrete undergoes important chemical and physical changes, starting at 400°C - 500°C. As calcium hydroxide and other hydration products start to decompose, concrete tends to lose its strength, typically around 600°C - 700°C. In order to improve the high temperature properties of concrete, admixtures can be used in concrete. In the following, a study on the effects of different admixtures on the properties of concrete at high temperature is presented.

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Fiber-Reinforced Polymers Based Rebar and Stirrup Reinforcing Concrete Structures

Journal of Materials Science and Engineering A ◽

10.17265/2161-6213/2018.3-4.001 ◽

2018 ◽

Vol 8 (2) ◽

Author(s):

Marco Lindner ◽

Konrad Vanselow ◽

Sandra Gelbrich ◽

Lothar Kroll

Keyword(s):

Concrete Structures ◽

Fiber Reinforced Polymers ◽

Fiber Reinforced ◽

Reinforced Polymers

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Effect of Different Environmental Conditions on the Mechanical Properties of CFRP Composites

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.b7263.129219 ◽

2019 ◽

Vol 9 (2) ◽

pp. 2948-2951

Keyword(s):

High Temperature ◽

Carbon Fiber ◽

Environmental Conditions ◽

Weight Ratio ◽

Fiber Reinforced Polymers ◽

Fiber Reinforced ◽

Carbon Fiber Reinforced Polymers ◽

Reinforced Polymers ◽

Cfrp Composites ◽

Carbon Fiber Reinforced

Carbon Fiber–Reinforced Polymers (CFRP) are extremely strong and stiff. They possess high corrosion resistance and their usage increase where rigidity and high strength-to-weight ratio are needed. Therefore they have been gaining wide usage in number of applications such as aerospace, marine, defense, civil and automobile as of their greater advantages. However the performances of these composites suffer when they are exposed to adverse environmental conditions such as moisture and high temperatures. This study work has been carried out to investigate the effect of environment on carbon composites. The primary purpose of this research study is to explore the degradation of Carbon-Fiber-Reinforced Polymers CFRP composites under various environmental conditions. The environmental conditions have been limited to influence of water uptake and high temperature in this study and the effect of environmental conditions on the tensile strength and modulus of the CFRP composites. For the very purpose, laminates of IM7/977-2 are designed and manufactured. Tensile testing on dry/wet coupons under room/high temperature conditions are conducted to investigate the degradation in strength and modulus of CFRP composites.

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