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MECHANISTIC EVALUATION OF ASPHALT CONCRETE MIXTURES CONTAINING RECLAIMED ROOFING MATERIALS.
| 题名： | MECHANISTIC EVALUATION OF ASPHALT CONCRETE MIXTURES CONTAINING RECLAIMED ROOFING MATERIALS. |
| 作者： | Ali-N; Chan-JSS; Potyondy-AJ; Bushman-R; Bergan-AT |
| 关键词： | RECLAIMED-ROOFING-MATERIALS; HOT-MIX-ASPHALT; ASPHALTIC-CONCRETE; MECHANISTIC-ANALYSIS; LABORATORY-TESTS; MECHANICAL-PROPERTIES; MODULUS-OF-RESILIENCE; CREEP-; DEFORMATION-; FATIGUE-MATERIALS; MOISTURE-SENSITIVITY; PAVEMENT-PERFORMANCE; PERFORMANCE-PREDICTION; COMPUTER-MODELS; RUT-DEPTH; CRACKING-FRACTURING; SERVICEABILITY-INDEX; FATIGUE-LIFE |
| 摘要： | Recycling of waste construction materials has gained popularity owing to increasing demands on landfill sites. This is evident by the use of ground rubber tire, glass, fly ash, and slag in asphalt pavements by various highway agencies in North America and around the world. Waste roofing materials also pose a heavy burden on landfill sites. Using reclaimed roofing materials (RRM) in hot mix asphalt (HMA) concrete pavements can lessen the demand on landfills. A study was carried out to determine the feasibility of using RRM in HMA pavement. This paper presents the results of a mechanistic evaluation of three asphalt concrete mixes containing 0, 15, and 25% RRM. By using laboratory prepared specimens of RRM mixes, mechanical properties such as resilient modulus, creep and permanent deformation, fatigue, and moisture sensitivity of these RRM mixes were determined. Performance of representative RRM pavements was modeled using the VESYS performance prediction model. Performance parameters, such as rut depths, cracking index, and the present serviceability index, were used to assess potential improvements of asphalt concrete mixes using RRM. The results indicated that the mix containing 25% RRM exhibited significant improvements in greater pavement rutting resistance, longer fatigue life, and better overall pavement performance compared with a conventional asphalt mix. |
| 总页数： | Transportation Research Record. 1995. (1515) pp28-36 (4 Fig., 9 Tab., 6 Ref.) |
| 报告类型： | 科技报告 |
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