IN-PLACE METHODS TO ESTIMATE CONCRETE STRENGTH
Guidance is provided on the use of methods to estimate the in-place strength of concrete in new and existing construction. The methods include: rebound hammer, penetration resistance, pullout, break-off, ultrasonic pulse velocity, maturity, and cast-in-place cylinders. The principle, inherent limitations, and repeatability of each method are reviewed. Procedures are presented for developing the relationship needed to estimate compressive strength from in-place results. Factors to consider in planning in-place tests are discussed, and statistical techniques to interpret test results are presented. The use of in-place tests for acceptance of concrete is introduced. The appendix provides information on the number of strength levels that should be used to develop the strength relationship and explains a regression analysis procedure that accounts for error in the independent variable.
Detroit, MI United States 48219
- Publication Date: 1996-1
- Features: Appendices; Figures; References; Tables;
- Pagination: 41 p.
- TRT Terms: Acceptance; Cast in place structures; Compressive strength; Concrete; Field tests; Penetration resistance; Pull out test; Pulses; Regression analysis; Statistical analysis; Strength of materials; Ultrasonics; Velocity
- Uncontrolled Terms: Concrete strength; Maturity; Pulse velocity; Repeatability
- Old TRIS Terms: Pullout; Test results
- Subject Areas: Data and Information Technology; Highways; Materials; I32: Concrete;
- Accession Number: 00722109
- Record Type: Publication
- Report/Paper Numbers: ACI 228.1R-95
- Files: TRIS
- Created Date: May 14 1996 12:00AM