Regional Database for Superpave Binders Final rept. (21 Jul 00-30 Jun 02)

摘要

In order to develop a statistically valid acceptance and payment plan for asphalt binders, the testing done by the supplier to complete the Certificate of Analysis must present the same lot of material as the testing done by the user agency. This is very difficult to accomplish within the protocols that are used by most state agencies. The database described in this report is based upon a unique sample identification number that is assigned by the supplier and transferred to the hot mix plant via the Certificate of Analysis or the Bill of Lading. This unique sample identification number allows the testing done for certifying a lot of material to be related to acceptance testing based on samples obtained at the hot mix plant. The database contains two input screens, one for the supplier and one for the user. The unique sample number is automatically created from information entered into the supplier input screen. Test results obtained by the supplier, information identifying the supplier and the supplier's laboratory, and ancillary information are also entered by the supplier. The user input screen contains a field for the unique sample identification number, thereby allowing the test data from the supplier and user to be related. Test results obtained by the user, information identifying the user and the user's laboratory, and ancillary information are also entered by the user. The database generates a percent payment based on the user's test data and a payment schedule contained within the database. The database is useful for a number of other purposes, such as conducting round-robin test programs, split sampling programs, and research efforts needed to verify the validity of a quality assurance and payment plan developed as part of another study.