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Evaluation of Non-Nuclear Density Gauges for HMAC: Year 1 Report.
| 题名： | Evaluation of Non-Nuclear Density Gauges for HMAC: Year 1 Report. |
| 作者： | sebesta, s. zeig, m. scullion, t. |
| 关键词： | *Hot-mix-paving-mixtures; *Asphalt-pavements.;Performance-evaluation; Road-materials; Pavement-overlays; Density-; Calibration-; Pavement-condition; Moisture-content; Gauges-; Thickness-; Test-procedures; Quality-assurance; Quality-control; Texas-. |
| 摘要： | This report describes research efforts to determine if commercially available non-nuclear density gauges can be used for TxDOT's density profile and joint density testing procedures. Researchers conducted testing with a Troxler 3450 nuclear gauge (operated in the thin-lift mode) and the Pavetracker (PT) and Pavement Quality Indicator (PQI) non-nuclear gauges. In a laboratory setting, research showed all the gauges could be affected by mix temperature, where gauge readings typically decreased with decreasing mix temperature. All gauges readings were also impacted by moisture, with the nuclear gauge least impacted. The precision of all gauges in the lab was good, with standard deviations below 0.5 pcf with the non-nuclear gauges and less than 1.0 pcf with the nuclear gauge. Field-testing showed the PQI was a suitable alternative to the nuclear gauge for density profiling and joint density testing. |
| 报告类型： | 科技报告 |
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