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PREDICTION OF FATIGUE CRACKING AND RUTTING IN ASPHALT PAVEMENTS BY SMALL-SCALE CENTRIFUGE MODELS.
| 题名： | PREDICTION OF FATIGUE CRACKING AND RUTTING IN ASPHALT PAVEMENTS BY SMALL-SCALE CENTRIFUGE MODELS. |
| 作者： | Huang-YH; Drnevich-VP; Roghani-H |
| 关键词： | STRATEGIC-HIGHWAY-RESEARCH-PROGRAM; CENTRIFUGES-; RESEARCH-; PREDICTION-; FATIGUE-; ASPHALT-PAVEMENT; RUT-; MODEL-; REPEATED-LOADING; PAVEMENT-PERFORMANCE; INSTRUMENTATION-; ASPHALTIC-MIXTURES; SCALE-MODEL; COMPUTER-SIMULATION |
| 摘要： | This study investigated the possiblity of predicting the fatigue cracking and rutting of a full depth asphalt pavement by centrifuge modeling. This was done by constructing small scale models composed of a fine asphalt mix on a sand subgrade and testing them in the centrifuge under repeated loading. The resilient tensile strains at the bottom asphalt layer and the accumulated permanent deformations on the surfaces of the pavement were measured directly as the number of load repetitions increased. The study designed the instrumentation for centrifuge testing, and determined the resilient and permanent deformation properties of asphalt mixtures. Procedures were developed for fabricating small scale models in two different scale factors. Centrifuge model responses were studied. A prototype pavement was modeled and the strains and deformations were compared with those obtained from the model tests predicted by the VESYS computer model. |
| 总页数： | 1991/04. pp81 (Figs., Tabs., Refs.) |
| 报告类型： | 科技报告 |
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