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Entrapped air normally exists in the form of relatively _________ air voids.

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Entrapped air normally exists in the form of relatively _________ air voids.

(a) Small

(b) Absent

(c) Large

(d) Medium

I had been asked this question during an online interview.

I'd like to ask this question from Damp Proofing Admixtures in chapter Admixtures and Construction Chemicals of Concrete Technology

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Right choice is (c) Large

Explanation: Entrapped air normally exists in the form of relatively large air voids, which are not dispersed uniformly throughout the mix, entrained air exists in the form of minute disconnected bubbles well distributed throughout the mix.

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