Title:
Prediction of Concrete Tensile Strength from its Compressive Strength: an Evaluation of Existing Relations for Normal Weight Concrete
Author(s):
Francis Oluokun
Publication:
Materials Journal
Volume:
88
Issue:
3
Appears on pages(s):
302-309
Keywords:
compressive strength; concretes; evaluation; prediction; splitting tensile strength; Materials Research
DOI:
10.14359/1942
Date:
5/1/1991
Abstract:
The 0.5 power relation adopted by ACI 318 for predicting the splitting tensile strength of concrete from its compressive strength has been under scrutiny for a long time. Since its adoption, many researchers have investigated its prediction accuracy, i.e., how well it correlates with or predicts test data. Research findings have consistently indicated that the 0.5 power relation adopted in ACI 318 does not agree particularly well with test results. Consequently, researchers have proposed several alternative relations. The research for this paper investigated the validity and accuracy of these alternate relations. Tensile strength predictions from these relations were compared with test results assembled from various sources. The splitting tensile strength was not proportional the 0.5 power of compressive strength. Although most of the alternate relations appear to be good, the assembled test data revealed that 0.69 is the most accurate power relation. Thus, a 0.69 power relation is proposed as an alternative to the ACI 318 relation.