DEVELOPMENT OF AN IMPACT CONE PENETRATION DEVICE FOR BACKFILL EVALUATION

The results of a series of preliminary studies that were conducted to develop a penetration device to be used in the assessment of the in situ condition of backfill materials behind the conduit wall of soil-steel structures and in other buried conduits are described. In particular, the methodologies associated with the design of an impact cone device and the results of a series of preliminary tests conducted on dense sand and loose granular soils are discussed.

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