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TEST METHODS FOR EVALUATION OF COLD-APPLIED BITUMINOUS PATCHING MIXTURES.
| 题名： | TEST METHODS FOR EVALUATION OF COLD-APPLIED BITUMINOUS PATCHING MIXTURES. |
| 作者： | Estakhri-CK; Button-JW |
| 关键词： | COLD-APPLIED-BITUMINOUS-MIXTURES; PATCHING-MAINTENANCE; TEST-METHODS; QUALITY-ASSURANCE; HOT-MIX-ASPHALT; STOCKPILES-; AGING-MATERIALS; WORKABILITY-; MATERIALS-SPECIFICATIONS; TRIAXIAL-TESTS; UNCONFINED-COMPRESSION-TESTS |
| 摘要： | A Texas Department of Transportation study performed by the Texas Transportation Institute was undertaken with a goal of providing methods to assure the quality of cold-applied, asphalt-stabilized maintenance mixtures. Test procedures and acceptance criteria were developed for hot-mix, cold-laid asphalt concrete patching mixtures. Two specific objectives were to develop a test procedure to simulate approximately six months of stockpile-aging and a test procedure to quantify workability of maintenance mixtures. The protocol developed is designed to estimate the relative ability of a maintenance mixture to retain adequate workability after outdoor stockpile storage. This protocol could be useful as part of a specification to promote quality. Two test procedures were evaluated regarding their potential to quantify the workability of maintenance mixtures: a triaxial test and an unconfined compression test. Test results indicated that both procedures provide a relatively good measure of workability before and after aging. Two laboratory aging procedures were evaluated for their ability to predict workability of a stockpiled maintenance mixture after six months of field aging. Procedure A appeared to provide a reasonable approximation of six months of field aging. |
| 总页数： | Transportation Research Record. 1997. (1590) pp10-16 (13 Fig., 12 Ref.) |
| 报告类型： | 科技报告 |
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