Post Construction Evaluation of U.S. 69 Sulphur-Asphalt Pavement Test Sections in Lufkin, Texas (512-9)

This report is a part of the continuing post-construction evaluation of a sulphur extended asphalt field trial located on U.S. 69 near Lufkin, Texas. It contains a discussion of the background methods of testing. In-situ test results and laboratory test results on cores are presented in tabular form with respect to pavement age. No significant distress in any of the pavement subsections has been evident to date. Other reports on this test section include: (1) a construction report, (2) "Post Construction Evaluation of Sulphur-Asphalt Pavement Test Sections", Interim Report No. 1, January, 1976; (3) "Post Construction Evaluation of Sulphur-Asphalt Pavement Test Sections", Interim Report No. 2, October, 1976; (4) "Post Construction Evaluation of Sulphur-Asphalt Pavement Test Sections", Interim Report No. 3, May, 1977; (5) "Post Construction Evaluation of U.S. 69 Sulphur-Asphalt Pavement Test Sections in Lufkin, Texas", Interim Report No. 4, October, 1977; (6) "Post Construction Evaluation of U.S. 69 Sulphur-Asphalt Pavement Test Sections in Lufkin, Texas", Interim Report No. 5, September, 1978, (7) "Post Construction Evaluation of U.S. 69 Sulphur-Asphalt Pavement Test Sections in Lufkin, Texas", Interim Report No. 6. Additionally, another report has been prepared and submitted a final report on the first phase of the post construction evaluation covering the period September, 1975 through April, 1980.