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Ground Penetrating Radar Study. Phase 1: Technology Review and Evaluation.
| 题名： | Ground Penetrating Radar Study. Phase 1: Technology Review and Evaluation. |
| 作者： | uddin, w. |
| 关键词： | thickness, layers, flexible pavements, rehabilitation, highway design, cost effectiveness, performance evaluation, mississippi, nondestructive testing |
| 摘要： | In December 2005 Mississippi Department of Transportation (MDOT) initiated State Study No. 182 on review and evaluation of ground penetrating radar (GPR) technology. This Phase I study has reviewed GPR equipment and data interpretation methodologies used for nondestructive determination of pavement layer thickness values. An extensive literature review was supplemented by review reports from two study consultants, and a comprehensive GPR technology evaluation survey of GPR manufacturer and users in the United States and abroad. There is adequate experience available with data interpretation methodologies and FCC certified or grandfathered GPR technologies for reliable and reasonably accurate field assessment of asphalt pavement layer thicknesses. The MDOT is planning to evaluate this technology together with the nondestructive falling weight deflectometer (FWD) tests to enhance the evaluation of asphalt highway pavements and rehabilitation design. A preliminary cost-effectiveness study shows a high benefit/cost ratio of 80-200 based on overlay thickness design of a 10-mile asphalt pavement section. Based on favorable assessment in this study, a follow up larger Phase II study is recommended for field evaluation of the candidate GPR technology with 1-GHz and 2-GHz air-launched horn antennas. A ground-coupled 400/500 MHz antenna is also recommended considering 30-inch or thicker pavements and the lime-treated subgrade layer. A pilot field study in Phase II should be conducted on a test section of a candidate asphalt highway pavement. Upon successful results and validation of improved pavement evaluation and resulting potential cost savings, the MDOT will consider implementing the GPR technology for routine use. / NOTE: Final rept. / Supplementary Notes: Sponsored by the Federal Highway Administration and the Mississippi Department of Transportation. / Availability Note: Available on CD-ROM and in color paper copy only. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0713；112p |
| 报告类型： | 科技报告 |
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