| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for economically and rationally designing concrete or mortar for use in an atmosphere of a sulfuric acid. SOLUTION: The concrete or the mortar is immersed in the sulfuric acid with a predetermined concentration; a correlationship between the product of the concentration of the sulfuric acid and an immersion period, and the depth of the erosion of the concrete or the mortar by the sulfuric acid is kept grasped (step S1); durable years and the concentration of the sulfuric acid in the assumed installation environment of the concrete or the mortar are assumed (step S2); and the thickness of cover concrete or mortar for reinforcements is designed based on the durable years and the concentration of the sulfuric acid, and the correlationship (step S3). COPYRIGHT: (C)2011,JPO&INPIT
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