Title:
Concrete Q&A: Moisture Conditioning of Core Samples
Author(s):
Publication:
Concrete International
Volume:
47
Issue:
2
Appears on pages(s):
66-68
Keywords:
strength, test, curing, gradient
DOI:
10.14359/51745617
Date:
2/1/2025
Abstract:
Should concrete core samples extracted from a structure be submerged in water until testing? This month’s Q&A provides answer to that question along with a discussion on proper and improper moisture conditioning of cores to be tested per ASTM C42/C42M.
Related References:
1. ASTM C42/C42M-20, “Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete,” ASTM International, West Conshohocken, PA, 2020, 7 pp.
2. ASTM C39/C39M-21, “Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens,” ASTM International, West Conshohocken, PA, 2021, 8 pp.
3. ACI Committee 214, “Obtaining Cores and Interpreting Core Compressive Strength Results—Guide (ACI PRC-214.4-21),” American Concrete Institute, Farmington Hills, MI, 2021, 20 pp.