On March 11 in 2011, a very big earthquake occurred in Tohoku district in Japan. Huge tsunami was generated by this earthquake and the coastal area of Tohoku district had catastrophic damage. Many houses were destroyed by tsunami and huge amount of rubble was generated. At the same time, a large amount of tsunami sludge deposited on land. We carried out the actual construction to create the artificial ground by recycling tsunami sludge. The physical properties of tsunami sludge were different if the places were different. However, it was confirmed through the actual construction that creation of artificial ground was possible even if the properties of tsunami sludge were different.