Tensile Strength Prediction in Concrete Using Nondestructive Testing Techniques

Field studies have suggested that wave velocities through concrete samples decrease with increasing damage. However, to date there has been no replication of this effect in a laboratory setting allowing for a controlled experiment to quantify this effect. The primary objective was to see how the exposure of concrete to sulfate solutions related to surfacewave velocity and through-wave velocity. The impact–echo method and the ultrasonic pulse velocity test were used to quantify these relationships, respectively. Laboratory research focused on correlating nondestructive test (NDT) data with destructive test results from field-sized concrete samples exposed to continuous sulfate attack over time. The intent was to evaluate the capabilities of the NDT techniques in identifying and quantifying damage due to sulfate attack. Prior research has shown that tension testing tends to be far more sensitive than compression testing to such damage. As a result, it was expected, and confirmed, that stress wave velocities from the two NDT techniques correlate better with tensile strength than with compressive strength.

1. T. W. Bremner, A. J. Boyd, T. A. Holm, and S. R. Boyd. Proc. Int. Workshop on Alkali–Aggregate Reactions in Concrete, CANMET=ACI, pp. 311–326, University of British Columbia Press, Vancouver, Canada (1995). 2. ASTM. Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens, C496-96. American Society for Testing and Materials. West Conshohocken, PA, USA. 3. A. J. Boyd and S. Mindess. The use of tension testing to investigate the effect of W/C ratio and cement type on the resistance of concrete to sulfate attack. Cem. Conc. Res. 34(3):373 (2004). 4. A. J. Boyd and S. Mindess. Proc. 3rd Int. Conf. Concrete Under Severe Conditions, ACI=CSCE, pp. 789–796 (2001). 5. W. Zheng, A. K. H. Kwan, and P. K. K. Lee. Direct tension test of concrete. ACI Mater. J. 98(1):63 (2001). 6. S. P. Pessiki and N. J. Carino. Setting time and strength of concrete using the impact-echo method REF 9—The effect of curing and deterioration on stress wave velocities in concrete. ACI Mater. J. 85(5):389 (1988). 7. S. Popovics. Strength and Related Properties of Concrete—A Quantitative Approach. Wiley, New York (1998). 8. ASTM. Standard Test Method for the Compressive Strength of Cylindrical Concrete Specimens, C39-01. 9. A. J. Boyd and C. C. Ferraro. J. Mater. Civ. Eng. 17(2):153 (2005). 10. ASTM. Standard Test Method for Pulse Velocity Through Concrete, C597-97. 11. ASTM. Standard Test Method for Measuring the P-Wave Speed and Thickness of Concrete Plates Using the Impact–Echo Method, C1383-04. 12. T. R. Naik, V. M. Malhotra, and J. S. Popovics. Nondestructive Testing of Concrete, 2nd ed., pp. 8–1. CRC Press, Boca Raton, FL (2004).
Usage Shares
Total Views
8 Page Views
Total Shares
0 Tweets
0 PDF Downloads
0 Facebook Shares
Total Usage