Title:
Statistical Methods to Evaluate in-Place Test Results
Author(s):
Nicholas J. Carino
Publication:
Symposium Paper
Volume:
141
Issue:
Appears on pages(s):
39-64
Keywords:
compressive strength; construction; loads (forces); pullout tests; regression analysis; safety; statistical analysis; strength; tests; General
DOI:
10.14359/3989
Date:
12/1/1993
Abstract:
In-place testing is used to estimate the compressive strength of concrete in a structure by measuring another related property. A strength relationship is used to convert the in-place test results to an estimate of the compressive strength. Statistical methods are needed for reliable estimates of in-place strength. Such methods should account for the uncertainties in the measured property, the uncertainty of the strength relationship, and the variability of the in-place concrete. Standard statistical procedures for dealing with these uncertainties have not yet been adopted in North American practice. Recommendations are provided for developing the strength relationship, and a reliable, easy-to-use approach is presented to estimate in-place characteristic strength.