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https://hdl.handle.net/11681/10403| Title: | In situ determination of flexural strength using seismic testing |
| Authors: | United States. Air Force Civil Engineer Support Agency Bell, Haley P., 1982- |
| Keywords: | Concrete aggregate Concrete properties Flexural strength Linear regression Modulus Portable Seismic Pavement Analyzer (PSPA) Seismic waves Seismic testing Splitting tensile strength |
| Publisher: | Geotechnical and Structures Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | ERDC/GSL TR ; 09-15. |
| Description: | Technical Report Abstract: Personnel of the U.S. Army Engineer Research and Development Center were tasked by Headquarters, Air Force Civil Engineer Support Agency, to update an existing relationship between the in situ pavement modulus as measured by the portable seismic pavement analyzer (PSPA) and flexural strength as determined in the laboratory. The PSPA is a nondestructive testing device that measures the Young's modulus of surface pavements using ultrasonic surface waves. An existing mathematical model between the PSPA-measured modulus and flexural strength was developed based on previous research involving seismic testing and concrete strength properties (Bell 2006). The existing correlation provided a correlation coefficient (R) of 0.73. Results from the current seismic testing research determined a slightly improved regression between the PSPA-measured modulus and flexural strength. The regression model developed and reported in this publication has a correlation coefficient (R) of 0.74. This report provides information about existing methods for predicting flexural strength in the field, procedures used for casting various small-scale concrete slabs using different aggregates in the laboratory, test procedures and results, data analysis, and recommendations for the use of the updated flexural strength prediction model. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/10403 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ERDC-GSL-TR-09-15.pdf | 7.77 MB | Adobe PDF |  View/Open |