THE 1999 CANADIAN ASPHALT EXCHANGE PROGRAM 1999 SUMMARY

摘要

This report documents the results of the 1999 CANADIAN ASPHALT EXCHANGE PROGRAM. Twenty-one agencies participated in the program. The exchange provides an opportunity for participants to compare their test results with those of other laboratories in order to provide a mechanism for reviewing and refining existing test procedures. The exchange also provides information to participants on their individual test procedures and equipment. Four types of binder material were tested in the 1999 exchange; a 150-200A asphalt cement, an MC-250 asphalt cutback, an HF 150S asphalt emulsion, and an HF 150P polymer modified asphalt emulsion. All participants were given identical material samples to evaluate. SHRP binder testing procedures for asphalt cement were also included as part of the Canadian Asphalt Exchange Program. The test result analysis was based on ASTM E691-92 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method. This procedure was used to evaluate the repeatability and reproducibility standard deviations for the different test procedures performed in the asphalt exchange. This information was used to determine the 95% repeatability and reproducibility limits for each test procedure. The analysis procedure also provided information for each participant to determine if their test results were consistent with those of the other laboratories.