Accelerators and retarders are used with gypsum products mainly to control_______________?
Correct answer: A. Setting time
- A. Setting time
- B. Setting expansion
- C. Hardness of the set product
- D. None of the above
Explanation
Accelerators shorten and retarders lengthen the working and setting periods of gypsum, so they are primarily used to regulate setting time. They do not mainly control setting expansion or final hardness.
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