CARBON DIOXIDE FIXING RETAINING WALL

PROBLEM TO BE SOLVED: To provide a carbon dioxide fixing retaining wall formed by effectively placing the surface capable of being easily formed in an optional slope and effectively fixing carbon dioxide in the atmosphere. SOLUTION: In the retaining wall formed in the surface of the ground, it can be obtained by hardening a concrete composition containing water, cement, an admixture and aggregate, a weep hole provided so as to contact the upper surface layer with the atmosphere is formed in a structural body having the upper surface layer section formed by having a gap of a diameter 10 μm to 200 μm or a cavity hole having the same diameter of a cross section of 0.05 volume% to 10 volume%. Carbon dioxide is gradually infiltrated from an opening section of the gap in the surface layer section having such a gap, reaction is made to calcium hydroxide as a reaction product of hydration reaction of cement in the concrete composition to form calcium carbonate, and fixation of carbon dioxide is made. COPYRIGHT: (C)2007,JPO&INPIT