Title:
Evolution of ACI 562 Code—Part 6
Author(s):
F. Michael Bartlett
Publication:
Concrete International
Volume:
38
Issue:
7
Appears on pages(s):
36-39
Keywords:
compressive, factor, cast-in-place, precast
DOI:
10.14359/51689122
Date:
7/1/2016
Abstract:
This article is the sixth of a series of articles intended to explain the rationale behind some of the upcoming changes in the ACI 562 Code. It discusses the ACI 562 provisions, derived from the method presented in Section 9.4.2 of ACI 214.4R-10, for calculating in-place concrete compressive strength from core test results. It also provides example calculations using the procedures included in both documents.
Related References:
1. ACI Committee 562, “Code Requirements for Evaluation, Repair, and Rehabilitation of Concrete Buildings (ACI 562-13) and Commentary,” American Concrete Institute, Farmington Hills, MI, 59 pp.
2. ACI Committee 214, “Guide for Obtaining Cores and Interpreting Compressive Strength Results (ACI 214.4R-10),” American Concrete Institute, Farmington Hills, MI, 17 pp.
3. Canadian Standards Association, Canadian Highway Bridge Code (CAN/CSA S6-14), Canadian Standards Association, Toronto, ON, Canada, 894 pp.
4. ACI Committee 562, “Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures (ACI 562-16) and Commentary,” American Concrete Institute, Farmington Hills, MI, 86 pp.
5. Bartlett, F.M., and MacGregor, J.G., “Statistical Analysis of the Compressive Strength of Concrete in Structures,” ACI Materials Journal, V. 93, No. 2, Mar.-Apr. 1996, pp. 158-168.
6. ASTM C42/C42M-13, “Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete,” ASTM International, West Conshohocken, PA, 7 pp.
7. Larsen, R.J., and Marx, M.L., Introduction to Mathematical Statistics and Its Applications, fifth edition, Prentice Hall, Upper Saddle River, NJ, 2015, 928 pp.
8. Bartlett, F.M., and MacGregor, J.G., “Equivalent Specified Concrete Strength from Core Test Data,” Concrete International, V. 17, No. 3, Mar. 1995, pp. 52-58.