| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a slag hardened body production process by which problems such as strength deficiency of a slag hardened body produced by using converter slag and/or ladle-refining slag as a part of the raw material, generation of cracks in the hardened body and expansion of the hardened body due to free MgO, can be solved all at once. SOLUTION: This slag hardened body is produced by mixing water, granular steelmaking slag and an SiO2 -containing material having latent hydraulicity together to obtain a mix and hardening the mix, wherein, as the steelmaking slag, converter slag and/or ladle-refining slag, each containing <=1 mass % unslagged MgO and <=10 mass % crystallized MgO, is used; as the SiO2 - containing material having latent hydraulicity, a blast-furnace slag fine powder is used, and the ratio of the total content of fractions of the converter slag and/or ladle-refining slag, each of which fractions has <=1.18 mm granule size, to the total content of all the components excluding water of the mix is 10-90 mass %, and the ratio of the blast-furnace slag fine powder content to the total content of all the components excluding water of the mix, is 9-40 mass %.</p> |
