A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation of Compaction Criteria for Airport Pavement Subgrade Soils
A study was conducted to determine the effect of lowering soil density requirements for subgrades under airport pavements. The investigation was primarily a laboratory effort in which molded specimens of three different soil types, compacted to densities at and below those currently specified by FAA criteria, were subjected to repeated axial loadings in a triaxial compression chamber. The primary response parameters of interest were permanent and resilient axial strain. Test results were formulated into a statistical model to predict permanent soil strain based on soil characteristics such as density, clay content, compaction characteristics, and sheer strength. The strain model was used to calculate values of permanent soil deformation at the surface of the subgrade for various combinations of soil density. Results of the test indicated that the wide variation in soil response among the three materials tested precluded any general alteration in current FAA compaction criteria. (Author)
Investigation of Compaction Criteria for Airport Pavement Subgrade Soils
A study was conducted to determine the effect of lowering soil density requirements for subgrades under airport pavements. The investigation was primarily a laboratory effort in which molded specimens of three different soil types, compacted to densities at and below those currently specified by FAA criteria, were subjected to repeated axial loadings in a triaxial compression chamber. The primary response parameters of interest were permanent and resilient axial strain. Test results were formulated into a statistical model to predict permanent soil strain based on soil characteristics such as density, clay content, compaction characteristics, and sheer strength. The strain model was used to calculate values of permanent soil deformation at the surface of the subgrade for various combinations of soil density. Results of the test indicated that the wide variation in soil response among the three materials tested precluded any general alteration in current FAA compaction criteria. (Author)
Investigation of Compaction Criteria for Airport Pavement Subgrade Soils
W. N. Brabston (author)
1981
174 pages
Report
No indication
English
Civil Engineering , Soil & Rock Mechanics , Pavement bases , Soil mechanics , Runways , Soil dynamics , Compacting , Laboratory tests , Soil stabilization , Density , Deformation , Loads(Forces) , Strain(Mechanics) , Resilience , Structural response , Clay , Sand , Flexible structures , Statistical analysis , Rigidity , Moisture , Models , Airports , Axial strain , Subgrade soils
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