High-strength concrete composition using silica fume slurry and method for producing the same

摘要

PPROBLEM TO BE SOLVED: To provide a high-strength concrete composition using a silica fume slurry where a concrete structure has superior strength, especially not only the outer part of the concrete structure but also a core part are satisfied with a specified design standard strength (for example, 130 N/mmSP2/SP), and to provide a method for producing the same. PSOLUTION: The high-strength concrete composition using the silica fume slurry includes low-heat portland cement, moderate-heat portland cement, the silica fume slurry, a fine aggregate, a coarse aggregate, kneading water and a high performance AE water reducing agent. The content of silica fume composing the silica fume slurry is 8-15 mass% to the total amount of the low-heat portland cement, the moderate-heat portland cement and the silica fume. The blending ratio of the low-heat portland cement and the medium-heat portland cement is 4:6-6:4 in mass ratio. PCOPYRIGHT: (C)2011,JPO&INPIT