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ASR Testing: A New Approach to Aggregate Classification and Mix Design Verification: Summary Report.
| 题名： | ASR Testing: A New Approach to Aggregate Classification and Mix Design Verification: Summary Report. |
| 作者： | Mukhopadhyay, A. K. |
| 关键词： | Aggregates; Alkali Silicon Reaction(asr); Alkalinity; Concretes; Contraction; Design; Fly Ash; Mixtures; Silica Fume; Testing |
| 摘要： | In the past 5.5 years, the Texas Department of Transportation (TxDOT) spent approximately $2 million for recasting precast concrete products that had alkali-silica reaction (ASR). Aggregates belonging to false positive and negative categories based on the current test methods are gradually growing. Therefore, the demand for a rapid and reliable test, which can assess aggregate ASR potential at various alkali loadings, is high. This study developed a fast, reliable test method to determine aggregate alkali-silica reactivity based on the time-dependent nature of the onset and speed of reaction. |
| 报告类型： | 科技报告 |
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