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原文传递 Enhancement of Resilient Modulus Data for the Design of Pavement Structures in Florida.

题名：	Enhancement of Resilient Modulus Data for the Design of Pavement Structures in Florida.
作者：	ping, w. v. ling, c. c.
关键词：	design procedures, laboratory test, database, borrow pits
摘要：	The resilient modulus (MR) of pavement materials is an essential parameter for mechanistically based pavement design procedures. However, measuring the resilient modulus of a particular site has been a complex and difficult task. The process, as outlined in the 1993 American Association of State Highway and Transportation Officials (AASHTO) Guide for Design of Pavement Structures, calls for the resilient modulus to be measured using a carefully controlled laboratory test on a small sample of the pavement material. Because the laboratory test is complex and can produce inconsistent results, many highway agencies, such as the Florida Department of Transportation (FDOT), have been hesitant to conduct them. In view of the complexity and difficulty in conducting the resilient modulus measurement, a database is being developed to catalog available MR test results for facilitating soil MR evaluation and pavement design in Florida. The database will enhance the effort in implementing the MR test for design of pavement structures in Florida. However, the current database contains only some 100 data points (over 200 MR tests) of previously tested resilient modulus values. Thus, the capability and usefulness of the database would be limited to a certain level due to an insufficient databank. This project will populate the database with additional MR values. Borrow pits in each district around the state would be potential candidate sites for the MR testing. The additional MR values would be added to the database for future application and analysis. / NOTE: Final rept. / Supplementary Notes: Sponsored by Florida State Dept. of Transportation, Tallahassee. Research Center. and Federal Highway Administration, Tallahassee, FL. Florida 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.
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