A ready-mix load waits through a site access delay and arrives near the specification's maximum discharge time. Slump is low and the batch ticket shows no approved retarder. What should happen before placement?
Correct Answer
C) Verify acceptance under the specification with testing and authorization, or reject the load if it is out of limits
A delayed load near the time limit must meet the specification at discharge; testing and authorization are needed, and an out-of-limit load should be rejected. Other choices: ticket age alone, undocumented water, and unrecorded blending defeat quality control.
Why This Is the Correct Answer
A delayed load near the time limit must meet the specification at discharge; testing and authorization are needed, and an out-of-limit load should be rejected.
Why the Other Options Are Wrong
Option A: Place it quickly because the ticket proves it was once acceptable
The trap in A is Place it quickly because the ticket proves it was once acceptable. That selection is wrong because it points to Place it quickly because the ticket proves it was once acceptable, but.
Option B: Add water until slump returns and skip a ticket note
Choice B gives Add water until slump returns and skip a ticket note. Its specific error: the action skips the timing, documentation, or field-control step needed for Concrete time limits.
Option D: Blend the old load into the next truck without recording it
In concrete work, Blend the old load into the next truck without recording it is the wrong selection for Concrete time limits: it leaves the work at an informal or incomplete stage, while Concrete time limits requires Verify acceptance under the specification with testing and authorization, or reject the load if it.
Memory Technique
Tag the scene with concrete time limits: wrong actor or wrong timing means the fix is not Verify acceptance under the specification with testing and authorization, or reject the load if it is out of limits.
Reference Hint
Open The Contractor's Guide to Quality Concrete Construction, 4th Ed., 2018; use the index entry or section for "Ready-mix delivery acceptance" to confirm that A delayed load near the time limit must meet the specification at discharge; testing and authorization are needed, and an out-of-limit load should be rejected.
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