“…In some projects, it is required to combine vacuum preloading with other improvement methods to achieve a specific degree of consolidation during a certain period of time. For example, electro-osmosis [18][19][20], dynamic compaction effort [21][22][23], heat preloading [24,25], geosynthetic encased stone columns [26,27], pneumatic fracturing method [28], flocculant treatment [10,29], lime treatment [8,11], and air booster systems [30][31][32] are the conventional techniques can be accompanied by vacuum preloading.…”