- Author
-
Stone, W. C.
- Title
- Internal Strain, Deformation, and Failure of Large Scale Pullout Tests in Concrete.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
NBSIR 82-2484
May 1982
- Distribution
- Available from National Technical Information Service
- Keywords
-
reinforced concrete; crack propagation; strain measurement; stress analysis; strain measuring instruments; finite element analysis; mathematical models
- Identifiers
- pullout tests
- Abstract
- A study was performed to obtain detailed experimental data on crack propagation and internal strain distribution for the pullout test. A 12:1 scaled-up pullout test was designed, using a commercial pullout insert for the prototype dimensions, and was instrumented with small waterproof embedment strain gages so as to obtain internal strain profiles at critical locations. Two large scale specimens were tested with apex angles falling at the upper and lower bounds currently recommended in ASTM C-900. Two dimensional axisymmetric finite element analyses were performed for the two experimental specimens and the results were compared with measured strains for load stages below the onset of internal cracking.