原文传递
INVERTED FLEXIBLE PAVEMENT RESPONSE AND PERFORMANCE.
| 题名： | INVERTED FLEXIBLE PAVEMENT RESPONSE AND PERFORMANCE. |
| 作者： | Tutumluer-E; Barksdale-RD |
| 关键词： | FLEXIBLE-PAVEMENTS; CRUSHED-STONE; CEMENT-STABILIZATION; SUBBASE-; CEMENT-TREATED-BASES; SILTY-SANDS; LOADING-TESTS; PAVEMENT-PERFORMANCE; VERTICAL-STRESS; PAVEMENT-DEFLECTION; FINITE-ELEMENT-ANALYSIS; RESILIENCE-; DEFORMATION-; STRESS-STRAIN-CHARACTERISTICS; SENSITIVITY-ANALYSIS; THICKNESS-DESIGN; INVERTED-SECTIONS |
| 摘要： | An inverted section consists of an unstabilized crushed-stone base sandwiched between a lower cement-stabilized layer and the upper asphalt concrete (AC) surfacing. Two inverted full-scale instrumented pavement sections were tested to rutting or fatigue failure in a laboratory facility. One inverted section had a 152-mm (6-in.) cement-stabilized silty sand subbase. The inverted sections were loaded up to 4.4 million load repetitions at failure. A 28.9-kN (6,500-lb) uniform circular loading was applied to the surface and systematically moved to prevent a punching failure. The inverted sections exhibited better performance compared to conventional and full-depth AC sections also tested. The inverted sections had lower vertical stresses on the subgrade and lower resilient surface deflections than the other sections. The rigid cement-stabilized subbase was effective in bridging a weak subgrade. The inverted section made optimum use of the compressive characteristics of the unstabilized aggregate base where stresses were compressive. A nonlinear finite-element program, GT-PAVE, was used to calculate the resilient pavement response. GT-PAVE did a reasonable job of simultaneously predicting the measured deformation and stress and strain response at six points in the different layers of the inverted sections. A sensitivity analysis indicates the use of a 152-mm (6-in.) unstabilized aggregate base and a 152- to 203-mm-thick (6- to 8-in.) cement-stabilized subbase to be an attractive inverted section design. |
| 总页数： | Transportation Research Record. 1995. (1482) pp102-110 (6 Fig., 4 Tab., 20 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- PLASTICITY MODELING APPLIED TO THE PERMANENT DEFORMATION RESPONSE OF GRANULAR MATERIALS IN FLEXIBLE PAVEMENT SYSTEMS.
- LINCOLN AVENUE RECLAIMED ASPHALT PAVEMENT BASE PROJECT.
- LTPP (Long Term Pavement Performance) Analysis: Influence of Design and Construction Features on the Response and Performance of New Flexible and Rigid Pavements.
- ENVIRONMENTAL DETERIORATION MODEL FOR FLEXIBLE PAVEMENT DESIGN: AN ONTARIO EXAMPLE.
- FIELD VERIFICATION OF MOVING LOAD MODEL FOR PAVEMENT RESPONSE.
- Determining the Effects of Cross-Anisotropy on Pavement Response and Performance.
检索历史
应用推荐
