- Author
- Carino, N. J.
- Title
- Statistical Methods to Evaluate In-Place Test Results.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- American Concrete Institute. New Concrete Technology: Robert E. Philleo Symposoum. SP-141-3. 1993, Liu, T. C.; Hoff, G. C., Editors, 39-64 p., 1993
- Keywords
- statistical analysis | compressive strength | construction | in-place testing | loads (forces) | pullout tests | regression analysis | repeatability | safety | strength | tests
- 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 uncertainities 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 uncertainities 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.