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API-936 Exam - Topic 1 Question 21 Discussion

Actual exam question for API's API-936 exam

Question #: 21
Topic #: 1

[All API-936 Questions]

[Installation Procedures]

Which of the following statements regarding curing of hydraulic bonded castables is true?

AApply a manufacturer approved membrane-type curing compound before the surface is dry to the touch

BThe membrane curing compound shall burn off at a temperature not less than 500F (260C)

CAfter remaining in place for 24 hours, forms shall be removed and a curing compound applied within 1 hour of form removal

DNo part of the lining shall be allowed to air dry more than 3 hours before application of a curing compound

Show Suggested Answer

Suggested Answer: D

by Elza at Jun 19, 2026, 02:55 AM

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Margery

1 day ago

I feel like we practiced a question similar to this one, and I think option D was emphasized as important to prevent air drying. That might be the right answer.

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Marg

6 days ago

I remember something about curing compounds needing to withstand high temperatures, so option B might be correct. But I’m not completely confident.

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Lyda

12 days ago

I think option A sounds familiar, but I’m not entirely sure if it’s the right choice. We talked about curing compounds in class, but I can’t recall the specifics.

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