Method for preparing foam light soil through silt and prepared foam light soil

The invention discloses a method for preparing foam light soil through silt. The foam light soil comprises, by mass, 200-300 parts of cement, 85-129 parts of fly ash, 15-203 parts of water, 200-300 parts of the silt, 1.7-2.6 parts of water reducing agents and 35-90 parts of foam. On one hand, the silt is used for replacing part of gelling material, and preparation cost is reduced; on the other hand, the silt generated through excavation can be used on site, silt processing cost is reduced, the method is easy, convenient and quick to use, and energy conservation and environmental protection are achieved; the prepared silt foam light soil has good mechanical strength and volume stability. Besides, the preparation method is simple, low in cost and suitable for being used and popularized.