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Effects of Pulverization on Properties of Stabilized Bases.
| 题名： | Effects of Pulverization on Properties of Stabilized Bases. |
| 作者： | geiger, a. yuan, d. nazarian, s. abdallah, i. |
| 关键词： | stabilizers, laboratory tests, gradation, strength |
| 摘要： | Pulverization of pavement base materials is routinely carried out for rehabilitation of roads through full-depth reclamation (FDR). The primary stabilizers currently used in TxDOT districts for FDR are cement, lime, and fly ash. The optimum stabilizer content is currently determined either based on experience or through a series of laboratory tests that evaluates the strength, stiffness and durability of the base-stabilizer mix. For lab testing, base materials are retrieved from the site way before pulverization. The change in gradation due to pulverization can significantly impact the base strength and stiffness. Phase I of this study consisted of an extensive laboratory study to determine the impact of changes in gradation on the desired stabilizer content of a base material. The impact of pulverization was also studied on an ongoing project. The results are provided in this report. It was found that the change in gradation indeed impacts the properties of the mix and should be considered in the design stages of FDR. In Phase II, the ways to address this matter will be investigated and reported. / NOTE: Technical rept. (Sept. 1, 2005-Aug. 31, 2006). / Supplementary Notes: Sponsored by Texas Dept. of Transportation, Austin. Research and Technology Implementation Office. and Federal Highway Administration, Austin, TX. Texas Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0713；119p |
| 报告类型： | 科技报告 |
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