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Reinforced concrete columns (made with M50 grade concrete) of an industrial building were found inadequate to carry the intended design load.
The columns need to be repaired by enlarging their cross-section. Which of the following would be recommended as a repair material?
O Material C: Lower modulus of elasticity than substrate; low creep and shrinkage
Material A: Higher modulus of elasticity than substrate; low creep and shrinkage
O Material B: Similar modulus of elasticity as substrate; low creep and shrinkage
Material D: Similar modulus of elasticity as substrate; high creep and shrinkage
Finish C
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Answer 1

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Answer 2

Answer:

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what is depression ?

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