YOUNG'S MODULUS OF ELASTICITY AND POISSON'S RATIO OF PLAIN CONCRETE.
Abstract
Dynamic and static determinations of Young's modulus and Poisson's ratio were made on concrete cylinders to establish a relationship between the two methods when applied to concrete test specimens. Three curing conditions, three sizes of cyliners, and two strengths of concrete were used; the cylinders were tested at 2, 4, 7, 12, and 24 weeks from the casting date. Dynamic values were calculated from the fundamental transverse, longitudinal, and torsional frequencies of the specimens. The static test results were not influenced by the cylinder size, and no difference could be found between the dynamic results for the cylinders. Dynamic values are affected slightly by prior static loading, the concrete cylinders exhibiting a small reduction in Young's modulus. The magnitude and recovery of this loss is dependent upon the age and/or the moisture content of the concrete at time of test. There is no constant relationship between the values for Young's modulus of elasticity and Poisson's ratio for concrete as determined by static and dynamic methods. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 03, 1964
- Accession Number
- AD0434917
Entities
People
- W. L. Cowell
Organizations
- Naval Facilities Engineering Service Center