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LTPP (Long Term Pavement Performance) Data Analysis: Feasibility of Using FWD (Falling Weight Deflectometer) Deflection Data to Characterize Pavement Construction Quality.
| 题名： | LTPP (Long Term Pavement Performance) Data Analysis: Feasibility of Using FWD (Falling Weight Deflectometer) Deflection Data to Characterize Pavement Construction Quality. |
| 作者： | stubstad, r. n. |
| 关键词： | data analysis, feasibility studies, deflection, measuring instruments, stress analysis, loads(forces), fatigue(materials), quality |
| 摘要： | Good materials and construction practices are vital to producing high quality and long lasting pavements. Quality control and assurance techniques can provide the owner of the roadway the means to ensure that these desired ends are achieved. The objective of this research study is to determine whether the Falling Weight Deflectometer (FWD) can effectively be used to assist in the QC/QA process during pavement construction. The Long Term Pavement Performance (LTPP) study provided the data needed to accomplish this research. LTPP began, in about 1988, as the Strategic Highway Research Program (SHRP), and it included a subset of newly constructed or rehabilitated pavements called the Specific Pavement Studies (SPS). Some of these were targeted at pavement maintenance and rehabilitation, while others were for new construction. New construction was subdivided into three LTPP experiments, one for asphalt concrete (AC) surfaced pavements (SPS-1), one for Portland Cement Concrete (PCC) surfaced pavements (SPS-2), and one for both AC and PCC pavements under the influence of light traffic loads (SPS-8). In each case, several thickness and material designs were developed in an experimental design matrix. These SPS experimental design matrices were constructed under a variety of climatic conditions and material sources in several states. During construction of the SPS-1, -2 and -8 projects, a large number of field and laboratory tests were performed on each structural layer. These tests included densities, moisture contents, layer thickness measurements and others, along with FWD tests conducted at each layer interface. This report shows that the FWD data is of reasonable quality and certainly of sufficient quantity to carry out the research. The traditional test results, although not as extensive as FWD data, were also reasonable and appeared to cover most of the wide variety of pavement designs and construction locations represented by the LTPP/SPS database. Sixteen SPS-1, SPS-2 and SPS-8 test sites (each site represents between 2 and 12 test sections) were utilized for analyses during this research project. These sites represent a wide variety of materials, climates, and construction dates. / NOTE: Final rept. / Supplementary Notes: See also PB2007-106721, PB2007-106722 and PB2007-106730. Sponsored by American Association of State Highway and Transportation Officials, Washington, DC. and Federal Highway Administration, Washington, DC. / Availability Note: 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： | u0711；76p |
| 报告类型： | 科技报告 |
相关文献
- LTPP DATA ANALYSIS: FEASIBILITY OF USING FWD DEFLECTION DATA TO CHARACTERIZE PAVEMENT CONSTRUCTION QUALITY.
- MANUAL FOR FWD TESTING IN THE LONG-TERM PAVEMENT PERFORMANCE PROGRAM.
- LTPP MANUAL FOR FALLING WEIGHT DEFLECTOMETER MEASUREMENTS OPERATIONAL FIELD GUIDELINES VERSION 3.1.
- Study of Long-Term Pavement Performance (LTPP): Pavement Deflections.
- FALLING WEIGHT DEFLECTOMETER RELATIVE CALIBRATION ANALYSIS.
- TEMPERATURE CORRECTION OF MULTILOAD-LEVEL FALLING WEIGHT DEFLECTOMETER DEFLECTIONS.
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