Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Drainable Bases Under Asphalt Pavements
Providing adequate drainage to a pavement system has been considered as an important design consideration to prevent premature failures due to water related problems such as pumping action, loss of support, and rutting, among others. As a result, permeable bases with drainage efficiency and structural stability characteristics have been widely used by several state DOTs in the design and construction of pavements. Ohio Department of Transportation has adopted several types of materials specifications for use as permeable bases: (a) ODOT 307 base, including IA, NJ, and CE types, (b) ODOT 306 Cement Treated Base, (c) ODOT 308 Asphalt Treated Base. However, the effectiveness of these permeable base materials has not been conclusively established in previous ODOT studies, including DEL-23 and LOG-33. In LOG-33, nondiscernable difference in pavement performance has been observed for pavements with different types of permeable base materials. In DEL-23, high ground water table at the pavement location has resulted in full saturation of subgrade soils due to capillary action. Out of concerns with results from DEL-23 and LOG-33 projects, ODOT implemented a moratorium, in March 2001, to suspend the use of the drainable bases for any new or rehabilitation pavement construction. On the other hand, other states such as Missouri, Mississippi, Alaska, Iowa, Indiana, Alabama, California, Alabama, California, Kansas, and Kentucky have continuously used the drainable base. It was decided that a research project be carried out to provide additional data to assess the merits of the drainable bases in the asphalt pavement.
Evaluation of Drainable Bases Under Asphalt Pavements
Providing adequate drainage to a pavement system has been considered as an important design consideration to prevent premature failures due to water related problems such as pumping action, loss of support, and rutting, among others. As a result, permeable bases with drainage efficiency and structural stability characteristics have been widely used by several state DOTs in the design and construction of pavements. Ohio Department of Transportation has adopted several types of materials specifications for use as permeable bases: (a) ODOT 307 base, including IA, NJ, and CE types, (b) ODOT 306 Cement Treated Base, (c) ODOT 308 Asphalt Treated Base. However, the effectiveness of these permeable base materials has not been conclusively established in previous ODOT studies, including DEL-23 and LOG-33. In LOG-33, nondiscernable difference in pavement performance has been observed for pavements with different types of permeable base materials. In DEL-23, high ground water table at the pavement location has resulted in full saturation of subgrade soils due to capillary action. Out of concerns with results from DEL-23 and LOG-33 projects, ODOT implemented a moratorium, in March 2001, to suspend the use of the drainable bases for any new or rehabilitation pavement construction. On the other hand, other states such as Missouri, Mississippi, Alaska, Iowa, Indiana, Alabama, California, Alabama, California, Kansas, and Kentucky have continuously used the drainable base. It was decided that a research project be carried out to provide additional data to assess the merits of the drainable bases in the asphalt pavement.
Evaluation of Drainable Bases Under Asphalt Pavements
R. Y. Liang (Autor:in)
2007
604 pages
Report
Keine Angabe
Englisch
Highway Engineering , Soil & Rock Mechanics , Asphalt pavements , Drainable bases , Drainage , Monitoring , Resilient modulus , Soils , Laboratory tests , Hydraulic conductivity , Design , Construction , Structural analysis , Stability , Aggregates , Deformation , Ohio , Pumping , Rutting , Saturation , Research project
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