Accelerated Testing For Studying Pavement Design And Performance Fy 99
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Accelerated Testing for Studying Pavement Design and Performance (FY 99)
This report describes the experimental investigation related to four experiments selected by the Midwest States Accelerated Testing Pooled Funds Program for FY 97 and FY 98. These experiments are: (1) ATL-97-1: Comparison of SM-2C and BM-2C Asphalt Overlays on Existing Portland Cement Concrete Pavement (PCCP); (2) ATL-97-2: Comparison of PCCP jointed slabs with Fiber Reinforced Polymer (FRP) and epoxy-coated steel dowels; (3) ATL-98-1: Comparison of an 8 in. (203 mm)-thick Asphalt Concrete (AC) with 5 in. (127 mm) AC on 5 in. (127 mm) Reclaimed Asphalt Pavement (RAP); and (4) ATL-98-2: Performance of a rehabilitation of the pavement sections of the experiment in (3). The report contains a discussion of the various experimental activities, a detailed description of the experiments and a summary of the results obtained. The report includes an overview of the facility followed by the accomplishments pertaining to the individual experiments (one chapter for each experiment).
Accelerated Testing for Studying Pavement Design and Performance (FY 2002)
This report covers the Fiscal Year 2002 project conducted at the Accelerated Testing Laboratory at Kansas State University. The project was selected and funded by the Midwest Accelerated Testing Pooled Fund Program, which includes Iowa, Kansas, Missouri and Nebraska. The objective of this research was to determine the effectiveness of the use of foamed asphalt stabilized Recycled Asphalt Pavement from full-depth reclamation (FAS-FDR) as base material for flexible pavements. The experiment consisted of constructing four pavements, one with a 9-in. conventional Kansas AB-3 granular base and three with 6-, 9-, and 12-in. FAS-FDR, and subjecting them to full-scale accelerated pavement test.
Accelerated Testing for Studying Pavement Design and Performance (FY 2003)
The Midwest States Accelerated Pavement Testing Pooled Fund Program, financed by the highway departments of Missouri, Iowa, Kansas and Nebraska, has supported an accelerated pavement testing (APT) project to compare the performance of stabilized clayey embankment soil when Portland cement, fly ash, lime and a commercial product were used as stabilizing agents. The project aimed to improve the practices related to the design of flexible pavements when the top of the subgrade is improved by chemical stabilization. The experiments were conducted at the Civil Infrastructure Systems Laboratory (CISL) of Kansas State University. The test program consisted of constructing four flexible pavement structures and subjecting them to full-scale accelerated loading test. The study indicated that cement and lime are the most effective stabilizers for the studied soil. These stabilizers resulted in lower vertical compressive stresses at the top of the subgrade and lower rut depth at the pavement surface than the fly ash-treated soil. After more than two million axle load repetitions, the pavement with cement stabilized embankment soil exhibited much less surface cracking than the pavement with fly-ash stabilized embankment. The commercial product proved not to be effective in stabilizing the non-sulfate clayey soil used in this experiment, when the embankment is constructed at the same moisture content and compaction level as for the other three chemicals. The unconfined compression strength measured on laboratory prepared samples of soil stabilized with the commercial chemical compound was very similar to that of the untreated soil.