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Soil Compaction of Four-Wheel Drive and Tracked Tractors Under Various Draft Loads
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Abstract
The soil response to traffic loads as affected by tire inflation pressure, track width and drawbar pull was measured. The change in soil physical properties caused by a John Deere 8870 tractor at two tire pressure settings and CATERPILLAR Challenger 65 and 75 tractors with 64 and 89 cm wide belt tracks, were measured at two load levels; no draft (tractor only) and tractor pulling a 12.5 m field cultivator. The Ohio State University Soil Physical Properties Measurement System was used to measure cone penetration resistance, air permeability, air-filled porosity, and bulk density. The results show the dual overinflated tires caused the greatest change, followed by the CATERPILLAR Challenger 65 track, then the CATERPILLAR Challenger 75 track, and finally dual correctly inflated tires caused the least effect on soil physical properties. These results were consistent at each depth. The effects of the two draft levels give the same ranking of the tractive units. In general, the percentage change of soil physical properties from untrafficked to trafficked was very similar for the load and no load comparison.
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Citation
Abu-Hamdeh, N., Carpenter, T., Wood, R., and Holmes, R., "Soil Compaction of Four-Wheel Drive and Tracked Tractors Under Various Draft Loads," SAE Technical Paper 952098, 1995, https://doi.org/10.4271/952098.Also In
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