Correlation of Nondestructive Pavement Evaluation Test Results with Results of Conventional Quality Control and In-Situ Strength Tests on an MX Road Test Section. Volume 2. Appendix A.
Final Technical rept.,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
Pagination or Media Count:
The test philosophy of the MX Road program called for a basic extension of existing criteria as well as a development of site-specific criteria in terms of field soil conditions. To that end, subgrade soils were selected to provide tie points to tests used to develop the conventional criteria and to approximate anticipated field conditions. The test section consisted of five separate items with three separate traffic lanes to provide for a comprehensive spectrum of the soil and pavement types. Items 2, 3, and 4 contained Blends I and II materials. These materials were specially blended to represent field materials. Blend I was considered to be a median gradation sand-gravel combination representative of that often encountered in the uppermost 2 ft of the potential siting area. Blend II was also a sand-gravel combination blended to represent the median gradation of that material encountered below the 2-ft depth. Items 1, 2, and 5 contained heavy clay, crushed limestone, and silt. These materials have been used in previous tests where data gathered and analyzed in the development of the current Corps of Engineers CE pavement design criteria. Thus, their behavioral characteristics are known under certain wheel loads, and the data to be collected will provide for the analysis of MX transporter performance on similar materials and an extension of criteria in terms of these classical soils.
- Civil Engineering
- Test Facilities, Equipment and Methods