| 摘要 |
<p>PROBLEM TO BE SOLVED: To profitably treat woody waste without causing environmental pollution or the like by incorporating slender pieces of woody waste as cement aggregate of cement structural material and decomposing the slender pieces by alkali in cement. SOLUTION: After a cement composition in which sawdust as woody waste is incorporated is put in a forming mold as hydraulic inorganic forming material to form blocs 1, the blocks 1 are laid on a slope such as a bank 3 of a river 2 as an embankment wall. When the blocks 1 are exposed to rain, alkali will be eluted from the cement thereof, however, the alkali is adsorbed by the sawdust, thereby gradually decomposing the sawdust. That is, the alkali is neutralized by this decomposition to prevent the alkali from leaking to outside the blocks 1. Furthermore, by the decomposition of the sawdust, void parts are formed in the blocks 1, and roots of a plant enter the void parts and a plant grows on the blocks 1 to make the normal plane of the bank 3 covered with the plant.</p> |
