Concrete samples mishandled, board orders extra breaks and contingency testing
Owner's representative said testing technicians left cylinder samples on-site for four days, potentially exposing them to >80°F and lowering 7‑day breaks; the committee approved early breaking of spare cylinders this week and will perform nondestructive testing if results remain low.
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The owner's representative reported a procedural error by the materials‑testing vendor that left concrete cylinder samples in an on‑site cooler for four days rather than retrieving them the next day, possibly exposing the specimens to temperatures above the 80°F threshold and depressing 7‑day strength readings. “There were a couple instances where the technician left the cylinders in the cooler on‑site for 4 days instead of picking them up the next day,” the owner’s representative said.
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