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Case Study of the Design, Installation, and Early Performance of a Nineteen-Millimeter Superpave Mix; Final rept. Jul 95-Jun 99
| 题名： | Case Study of the Design, Installation, and Early Performance of a Nineteen-Millimeter Superpave Mix; Final rept. Jul 95-Jun 99 |
| 作者： | Maupin, G. W. |
| 关键词： | Hot mix paving mixtures; Voids; Coarse aggregates; Benders(Materials); Adhesives; Compacting; Case studies; Hot mix paving mixture |
| 摘要： | An attempt was made to design and construct a coarse matrix high binder (CMHB) mix. When the design of the CMHB mix was unsuccessful a coarse 19.0-mm Superpave mix was substituted. This report describes the attempted design of the CMHB mix, Construction problems with the Superpave mix included low gyratory voids on fields samples and tenderness during compaction. Mix adjustments in the gradation and asphalt content failed to remedy the problems. The tenderness also contributed to inadequate pavement density. Although field samples indicated low gyratory voids, no overconsolidation as would be evidenced by bleeding has been observed. Therefore, it appears that this mix was able to contain more asphalt than was predicted by the gyratory voids. The average rut depth of all sections was about 4 mm after 27 months. |
| 总页数： | 28p |
| 报告类型： | 科技报告 |
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