| Test Plan for Spray Applied Polymer Surface Sealer Study The detailed test plans, project reports and test reports are in the Project Library. In summary, the project began with a user survey and the development of Expert Task Groups and State-of-the-Knowledge workshops at Myrtle Beach, South Carolina on March 1, 2001, Flagstaff, Arizona on September 11, 2001, Washington DC in January 2002 (at TRB), and in Minneapolis, Minnesota on August 21st, 2002. Test projects were placed in Michigan, Arizona, Minnesota and California with a number of different emulsions. The projects were open to any emulsion suppliers who agreed to donate materials and the application of their products. The plan was to reapply the same products on treated and untreated sections at defined time intervals with a variety of testing (including the methods described in the Tests section below) on the test and control sections. Based on early results and the constraints of the projects, the original test plan was modified. Some tests were discontinued, and others added as experimental findings dictated. Test elements added late in the project included friction testing of sanded surfaces, emulsion surface tension, emulsion particle size and Bending Beam Rheometer low temperature testing of mix specimens cut from test cores. The original planned application sequence is diagrammed below. Materials were to be placed at two year intervals, with some new and some overlapping applications, and varying application rates. Planned Application Sequence
The original test plan is given in the table.  Descriptions of the test sites are given below, and the table gives a summary of the treatments. (Construction reports for some of the projects may be found in the Project Library and photos in the Photo Gallery.) Arizona, US 87 (40 miles north of Winslow), application of CSS-1h, Reclamite, Pass QB, ERA-25 and ERA-1 on September 12, 2001. Friction testing was done pre-project and at 1 and 30 days. A second application of CSS-1h, Pass QB and Reclamite was made on October 19, 2006. All the materials were tested on three different surface types: a dense graded surface, a chip seal surface, and an open graded asphalt rubber surface (AR-ACFC). Friction tests with the portable devices and the trailer were done in 2006 a few days after application. Sand was also used on a portion of the 2006 treatments. California Interstate 5 (described as "Marysville, 10 miles north of Sacramento"), application of Reclamite, Pass QB, CQS-1h, CSS-1h and Topein C on 10/25/01. Friction and surface texture data was collected before construction and after 1, 42 and 272 days. California State Route 78 (Salton Sea), application of Reclamite, Pass QB, CQS-1h, SS-1h, and a control section. Each of the products was placed over an asphalt rubber surface. Friction testing was done pre-project and at 1 and 30 days, and cores taken in 2007. Test Site Summary
Minnesota State Route 251 (Maple Island), application of CSS-1h, CRF, Pass QB, GSB Type B, Reclamite, and a control section on August 22, 2002. The Minnesota DOT also placed a chip seal. Additional applications were made in July, 2004 and on September 14, 2006.
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