Development of ecosystem harmonic vegetation block with bio polyurethane made from used paper

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In the riverside, the industrial method naturally restored using the vegetation block is important. It thought about the porous block using the polyurethane resin made from the used paper. The purpose of this study is to clarify the properties of the vegetation block, and to propose the condition of moderate strength, modulus of elasticity, and the ecosystem harmony. Various strength tests of the resin and the biofouling examinations by the exposure, etc. were executed. As a result, it has been understood that the vegetation block can adjust strength to the extent not destroyed with the root, and has appropriate ecosystem harmony. However, water holding property was low, and the plant was not able to grow up enough because the pore size distribution was rough. If the viscosity of the resin is lowered, the pore diameter of the vegetation block becomes small. It will be thought that the examination is necessary in the future.