COMPACTION CAPACITY RATING OF OFF-ROAD TIRES (FURTHER VERIFICATION AND PROCEDURES)

摘要

The compaction capacity rating of tires (further CC rating) is a numerical index expressing the risk of soft soil compaction by loaded wheels with tires and reflecting the tire parameters such as the size, load and inflation pressure. The compaction is defined in terms of soil dry bulk density. The CC rating is based on processed laboratory measurements of soil compaction by pressure plates and thus avoids dealing directly with complicated stress field in the ground. A tire itself is represented by a substituting plate of the same footprint area and mean contact pressure. CC rating compares the average soil compaction by an examined tire in layers between 20 and 50 cm under the ground surface with critical soil compaction. The paper informs about principals and use of the CC evaluation technique.