Strength estimating method and strength estimating apparatus for soil cement

摘要

PROBLEM TO BE SOLVED: To provide a strength estimation method and strength estimation device for soil cement using blast furnace cement. SOLUTION: The amount of acid required to make a predetermined amount of blast furnace cement an apparent neutralization point in a predetermined time by neutralizing a sample of blast furnace cement used for soil cement with a predetermined concentration of acid. Step S1 to be obtained, Step S2 to obtain the content of the blast furnace slag fine powder in the sample from the predetermined relationship obtained in advance and the amount of acid obtained in Step S1, and the predetermined relationship obtained in advance to Step S2. The step S3 of determining the strength of the soil cement from the content of the blast furnace slag fine powder obtained in step 1 and the mass ratio of blast furnace cement and water in the cement milk used for soil cement is provided. [Selection diagram] Figure 1