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A discontinuity that occurs during the casting of molten metal which may be caused by the splashing, surging, interrupted pouring is ___________

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A discontinuity that occurs during the casting of molten metal which may be caused by the splashing, surging, interrupted pouring is ___________

(a) Burst

(b) Cold shut

(c) Flaking

(d) Blow hole

I had been asked this question in exam.

The question is from Pulse Velocity Test in chapter Testing of Concrete of Concrete Technology

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The correct answer is (b) Cold shut

The best I can explain: A discontinuity that occurs during the casting of molten metal which may be caused by the splashing, surging, interrupted pouring, or the meeting of two streams of metal coming from different directions is called cold shut.

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