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In the soundness test a specimen of hardened cement paste is ___ for a fixed time.

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In the soundness test a specimen of hardened cement paste is ___ for a fixed time.

(a) Freeze

(b) Dry

(c) Boiled

(d) Dipped in water

This question was posed to me during an interview for a job.

I'd like to ask this question from Testing of Cement in chapter Types of Cement and Testing of Cement of Concrete Technology

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Correct option is (c) Boiled

The best explanation: A specimen of hardened cement paste is boiled for a fixed time so that if there is any tendency of increase or decrease in size can be detected.

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