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Long Term Research on Bituminous Coarse Aggregate: Use of Micro-Deval Test for Project Level Aggregate Quality Control.
| 题名： | Long Term Research on Bituminous Coarse Aggregate: Use of Micro-Deval Test for Project Level Aggregate Quality Control. |
| 作者： | jayawickrama, p. w. hossain, s. hoare, a. r. |
| 关键词： | quality control, monitoring, road materials, abrasion, concrete durability, surface treatment, flexible pavements, magnesium sulfates, asphalts, texas, performance evaluation, testing |
| 摘要： | This research evaluated the feasibility of implementing the Micro-Deval (MD) test in the Texas Department of Transportation's (TxDOT) Aggregate Quality Monitoring Program (AQMP) for bituminous coarse aggregate. In particular, the research investigated the possibility of using this test as a project level quality control tool. The study included review and analysis of TxDOT's Materials and test lab's AQMP data as well as independent laboratory testing. The findings showed that the Micro-Deval and magnesium sulfate soundness (MSS) tests are not adequately well correlated to allow the MD test to be used as a surrogate test for the MSS test. Alternative variations of the MD test did not yield significant improvement in the strength of the MD-MSS correlation. Based on these findings, it is recommended that an additional specification be introduced based on the MD test and this specification limit used for the purpose of project level quality control. The excellent repeatability of the MD test allows a smaller tolerance to be used in stockpile testing. Because of this the short testing time, the MD test will be an effective project level quality control test. / NOTE: Technical rept. (Feb. 2003-Aug. 2006). / Supplementary Notes: See also PB2005-109981. 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： | u0715；89p |
| 报告类型： | 科技报告 |
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