| 主权项 |
1. A method of effecting a stabilization of a portion of a footing of a building, said method comprising the steps of:
a) drying a portion of soil in a vicinity of a footing; b) introducing a water resistant plastic material into said portion of said soil and openings in said soil in said vicinity of said footing to seal said soil; c) introducing a two-part polyurethane plastic material to beneath said footing with a pump, said two-part polyurethane plastic material is introduced into said portion of said soil so as to substantially keep said portion of said soil in a position as to prior said step c); d) forming a balloon shape in said portion of said soil by introducing of said two-part polyurethane plastic material; and e) introducing into said balloon shape by successive injections of said two-part polyurethane plastic material to expand said balloon shape to produce a lifting of said footing; wherein said soil is selected from the group consisting of clay, and a clay composite soil; wherein said two-part polyurethane plastic material has a predetermined viscosity and a predetermined chemical set time, and wherein said pump is used with a predetermined rate of flow with said two-part polyurethane plastic material. |
