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Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine Aggregate. National Cooperative Highway Research Program (NCHRP) Report 805.
| 题名： | Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine Aggregate. National Cooperative Highway Research Program (NCHRP) Report 805. |
| 作者： | H., Azari; N. H., Tran; R. C., West |
| 关键词： | Absorbed Asphalt Binder; Aggregates; Aging; Asphalt Concretes; Asphalt Pavements; Design; Durability; Effective Specification Gravity; Evaluation; Film Thickness; Hot Mix Paving Mixtures; Road Materia |
| 摘要： | The objective of this project was to develop improved test methods for determining the specific gravity and absorption of coarse and fine aggregates for consideration by the AASHTO Highway Subcommittee on Materials. Development of the test methods aimed for balanced improvements in their (1) accuracy, precision, and ruggedness; (2) ease of use; (3) time of conditioning and testing; (4) cost; and (5) ability to deal with natural, crushed, recycled, and manufactured materials, compared with present standard methods. The ramifications of changes to the test methods on HMA mix design and PCC proportioning, other aggregate characteristics, and technician training and qualification were also addressed. |
| 报告类型： | 科技报告 |
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