原文传递
MEASURING RESILIENT MODULUS OF GRANULAR MATERIALS IN FLEXIBLE PAVEMENTS.
| 题名： | MEASURING RESILIENT MODULUS OF GRANULAR MATERIALS IN FLEXIBLE PAVEMENTS. |
| 作者： | Ping-WV; Yang-Z; Liu-C; Dietrich-B |
| 关键词： | American-Association-of-State-Highway-and-Transp-Officials; Backcalculation-; Case-studies; Dry-density; Falling-weight-deflectometers; Field-tests; Flexible-pavements; Granular-materials; Laboratory-tests; Measurement-; Modulus-of-resilience; Moisture-content; Pavement-design |
| 摘要： | A comparison study from the experimental results of the falling weight deflectometer (FWD) backcalculated modulus values, laboratory-measured resilient modulus values under field and laboratory conditions, and laboratory limerock bearing ratio values for granular materials in flexible pavements is presented. Based on the measured results, a case study was conducted to illustrate the use of laboratory resilient modulus for pavement design through the American Association of State Highway and Transportation Officials (AASHTO) flexible pavement design procedure. The results indicated that the average laboratory resilient moduli at optimum compacted conditions were 1.1 times higher than the average laboratory determined resilient moduli under in situ conditions. The FWD backcalculated moduli were about 1.8 times higher than the laboratory resilient moduli for the granular materials. The laboratory optimum moisture content was comparable to the field-measured in situ moisture content, although the average laboratory-determined maximum dry density was slightly higher than the average field-measured in situ dry density. The flexible pavement design could be based on the resilient modulus values found in the laboratory. |
| 总页数： | Transportation Research Record. 2001. (1778) pp81-90 (2 Phot., 10 Fig., 2 Tab., 18 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- Strength Contribution of Select Subgrade Reinforcement Materials
- Development of Methodology to Include the Strength Contribution of Select Subgrade Materials in Pavement Structure.
- Resilient Moduli of Typical Missouri Soils and Unbound Granular Base Materials.
- Long-Term Pavement Performance. Protocol P46: Resilient Modulus of Unbound Granular Base/Subbase Materials and Subgrade Soils.
- TRIAXIAL CHARACTERIZATION OF MINNESOTA ROAD RESEARCH PROJECT GRANULAR MATERIALS.
- AASHTO DRAINAGE COEFFICIENTS FOR FLEXIBLE PAVEMENTS.
检索历史
应用推荐
