Title:
Evaluation of Concrete Compression TestResults
Author(s):
L. R. Lauer
Publication:
Journal Proceedings
Volume:
62
Issue:
4
Appears on pages(s):
467-478
Keywords:
coefficient of variation, compressive strength, compression test, cylinder, evaluation, graphical method, mean strength, quality control, ready-mixed concrete, standard deviation
DOI:
10.14359/7705
Date:
4/1/1965
Abstract:
A graphical method is applied to the evaluation of actual compression cylinder test results of concrete from a large ready mixed concrete firm for its previous year of operation. These results are then utilized as a basis of design for succeeding jobs supplied by the firm. A graphical representation of data to obtain standard deviation, mean strength, and the coefficient of variation is shown and the results compared with the usual root mean square method of obtaining these values. The graphical method not only allows processing of data within a short time, but it also allows visual detection of deviate results.