Behaviour of Compacted Materials 1n the Light of Data From Some Big Dams

Abstract

Under the necessity of closing the experience cycle of predictions, from índex tests and conventional laboratory tests, to performance, the compressibility of some compacted earth and rock fills are analysed. Compaction's benefits interpred in the form of a nominal preconsolidation pressure are quantified through statistical regressions on oedometer test results from undisturbed block samples. The monitored behaviour of the dams evidences much higher moduli. Compacted sound angular rockfill also evidences nominal precompression pressures: moduli are, however, lower than would be predicted intuitively.