| abstract |
(57) [Problem] To facilitate a simple foundation work for greening by manual or air drop using a mortar-like lightweight cement material using lightweight fine aggregate. SOLUTION: The amount of lightweight fine aggregate is adjusted so that the kneading specific gravity becomes 2.0 or less, and an acrylic resin emulsion agent having an effect of forming a cured film is added to 2 to 5% (% by weight) of the added water volume. Mixing mortar-like lightweight cement material with talus sediment 1 For 0, it is sprayed and cured into a columnar shape 15, a vertical streak shape 16, and a horizontal streak shape 17 by air drop. After curing, the plant growth base material 20 containing seeds is sprayed to grow the introduced vegetation 21. As the lightweight fine aggregate, an organic material such as wood chip, coco pith fiber, synthetic fiber fiber, bark fiber or pulp fiber having an absolute dry weight of 0.3 or less or a specific gravity of surface dryness of 0.35 to 0.7 is used. |