| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a concrete structure having antibacterial activity by preparing an antibacterial agent for inhibiting the growth of sulfur-oxidizing bacteria and/or sulfuric acid-producing bacteria, both of which bacteria are liable to cause deterioration of the concrete structure, while utilizing waste containing a silicic acid component and an aluminum component, as an effective resource, and mixing the prepared antibacterial agent with cement. SOLUTION: This antibacterial concrete production process comprises: mixing waste containing both a silicic acid component and an aluminum component or waste containing any one of such a silicic acid component and an aluminum component with waste containing at least one of such a silicic acid component and an aluminum component, to obtain a waste mixture having a desired Si/Al atomic ratio (or SiO2/Al2O3 molar ratio); further mixing the waste mixture with an alkali aqueous medium; reacting them with each other in a pressure reaction vessel while heating the mixture and/or applying a pressure to the mixture, to obtain a reaction product; depositing an antibacterial cation and/or an antibacterial organic compound on the reaction product; and mixing the resulting material with cement.</p> |
