原文传递
Permanent Deformation of Subgrade Soils Phase 2: Repeated Load Testing of Four Soils; Final rept
| 题名： | Permanent Deformation of Subgrade Soils Phase 2: Repeated Load Testing of Four Soils; Final rept |
| 作者： | Elliott, R. P.; Dennis, N. D.; Qiu, Y. |
| 关键词： | Sugrades; Deformation; Soil tests; Arkansas; Tables(Data); Graphs(Charts); Loads(Forces); Triaxial tests; Soil water |
| 摘要： | This reports the second phase of a three-phase project to study the permanent deformation behavior of subgrade soils. Four Arkansas soils were tested in this phase to develop data that can be used in Phase III. Phase III will examine the effect of factors such as deviator stress, moisture content, first cycle freeze-thaw, density, load history, and soils type in subgrade permanent deformation. All the repeated load tests were conducted using the test protocol established during the first phase of this study. The test protocol consists of repeated load triaxial testing. The confining pressure of repeated load testing was set to a fixed value of 21 kPa (3 psi). Load frequency was 1 Hz with a duration of 0.1 second followed by a rest period of 0.9 second. Deviator stresses were varied to determine their effect on the deformation accumulation. Moisture contents were set to three levels to simulate the service range of highway subgrades in Arkansas. The moisture contents were 105%, 110%, and 120% of the soil's optimum moisture content. Some specimens were subjected to one cycle of freeze-thaw to gain data on the effect of this parameter. |
| 总页数： | 94p |
| 报告类型： | 科技报告 |
相关文献
- MODEL FOR RESILIENT MODULUS AND PERMANENT STRAIN OF SUBGRADE SOILS.
- EFFECT OF GEOTEXTILES ON PERMANENT DEFORMATION IN SALT-ENCRUSTED SUBGRADE SOILS.
- LABORATORY DETERMINATION OF RESILIENT MODULUS FOR FLEXIBLE PAVEMENT DESIGN.
- Spring Thaw Predictor & Development of Real Time Spring Load Restrictions
- Long-Term Pavement Performance. Protocol P46: Resilient Modulus of Unbound Granular Base/Subbase Materials and Subgrade Soils.
- Frameworks to Represent Uncertainty When Level of Service Is Determined.
检索历史
应用推荐
