Evaluation of Two Vacuum Preloading Techniques Using Model Tests

Several vacuum preloading systems have been developed over the years. Each has its advantages and limitations. Two vacuum preloading techniques, namely the Menard and the Beaudrain systems, have been evaluated using model tests. Comparison between using two different drain types, circular and band drain has also been conducted. The test results are presented in this paper. The model tests show that the Menard preloading system is more effective under the test conditions; on the other hand, not much difference is observed between the consolidation results of the circular and band drain. The implication of the model tests to large scale field conditions is also discussed.