A rough / Chalky surface of the cast is due to_______________?
Correct answer: B. All of the above
- A. Not waiting for 20 min before pouring
- B. All of the above
- C. Air incorporation in the mix
- D. High speed accelerator
Explanation
A rough or chalky cast surface may result from delayed pouring, a fast accelerator that causes premature surface setting, or air incorporated during mixing. Therefore, all the listed factors can contribute.
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