Which of the following is not a characteristic advantage of Fibre Reinforced Polymer (FRP) when used for strengthening and repairing structural elements?
- AHigh strength-to-weight ratio
- BExcellent electrochemical corrosion resistance
- CHigh thermal conductivityCorrect
- DGood insulation properties
Solution
Concept
Advantages of fibre reinforced polymer
Formula
NONE
Step-by-step solution
1. Fibre Reinforced Polymers offer light weight, high strength, and non-corrosive properties. Answer: C
Explanation
Fibre Reinforced Polymers offer a high strength-to-weight ratio, excellent corrosion resistance, and low thermal conductivity, making them effective insulators. Therefore, listing high thermal conductivity as an advantage is incorrect, making option C the right choice.
Why the other options are wrong
B) Excellent corrosion resistance is a well-established advantage of FRP composites. D) Good thermal insulation is a characteristic advantage of FRP.
Shortcut
FRP materials are thermal insulators, so "high thermal conductivity" is false/not an advantage.
Common mistake
Misreading the prompt asking for what is "not a characteristic advantage" and selecting actual advantages such as option A or B.
Correct answer: C) High thermal conductivity