Title:
Concrete Q&A: Acceptance Testing of Hardened Concrete
Author(s):
Publication:
Concrete International
Volume:
45
Issue:
8
Appears on pages(s):
71-72
Keywords:
strength, standard, lab, cylinder
DOI:
10.14359/51739103
Date:
8/1/2023
Abstract:
This month’s Q&A focuses on requirements for acceptance testing of hardened concrete. It discusses sampling, curing, and testing, as well as responsibilities for caring for concrete specimens and acceptance criteria for concrete strength, and emphasizes the importance of preplacement meeting to discuss responsibilities for curing and handling of test specimens.
Related References:
1. ACI Committee 318, “Building Code Requirements for Structural Concrete and Commentary (ACI CODE-318-19) (Reapproved 2022),” American Concrete Institute, Farmington Hills, MI, 2019, 624 pp.
2. ASTM C172/C172M-17, “Standard Practice for Sampling Freshly Mixed Concrete,” ASTM International, West Conshohocken, PA, 2017, 3 pp.
3. ASTM C31/C31M-22, “Standard Practice for Making and Curing Concrete Test Specimens in the Field,” ASTM International, West Conshohocken, PA, 2022, 7 pp.
4. ASTM C39/C39M-21, “Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens,” ASTM International, West Conshohocken, PA, 2021, 8 pp.
5. ASTM C1077-17, “Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation,” ASTM International, West Conshohocken, PA, 2017, 9 pp.
6. ACI Committee 228, “Report on Methods for Estimating In-Place Concrete Strength (ACI PRC-228.1-19),” American Concrete Institute, Farmington Hills, MI, 2019, 52 pp.
7. ACI Committee 132, “Responsibility for the Care of Test Specimens for Acceptance of Concrete—TechNote (ACI PRC-132.1-22),” American Concrete Institute, 2022, 5 pp.
8. “Pre-Construction Checklist: Concrete Acceptance Testing,” National Ready Mixed Concrete Association, Alexandria, VA, 2021, 5 pp., www.nrmca.org/wp-content/uploads/2021/06/4ConcreteAcceptanceTestingChecklist.pdf.