Title:
Concrete Q & A: How Low Is Too Low for a 7-Day Cylinder Break?
Author(s):
Publication:
Concrete International
Volume:
32
Issue:
2
Appears on pages(s):
74-76
Keywords:
DOI:
Date:
2/1/2010
Abstract:
Specifications for our job require casting one cylinder to be tested at 7 days, two cylinders for testing at 28 days, and one backup cylinder to be tested at a later date if the results of the 28-day test don’t meet specification requirements. What action should be taken when 7-day results are unsatisfactory, but concreting beyond the member from which concrete was sampled has already progressed substantially?