FINE AGGREGATE FOR CEMENT CONCRETE, CEMENT COMPOSITION, AND CEMENT CONCRETE USING THE CEMENT COMPOSITION

摘要

PPROBLEM TO BE SOLVED: To provide a fine aggregate for cement concrete capable of providing a mortar or concrete having a good fluidity-retaining performance and useful in civil engineering and construction industries, and to provide a cement composition including the fine aggregate and also the cement concrete using the cement composition. PSOLUTION: This fine aggregate has a particle size of 0.1-5 mm, particularly includes 0.5% or more of a non-sulfate sulfur, is 20 mg/L or higher in concentration of the eluted non-sulfate sulfur, and further includes a blast furnace annealed slag, the glass content of which is 30% or less. The fine aggregate passes 100% through a sieve of 4.75 mm nominal dimension, 95-100% through 2.36 mm, 80-100% through 1.18 mm, 35-80% through 0.6 mm, 15-50% through 0.3 mm and 2-20% through 0.15 mm. The cement composition includes a cement and the above fine aggregate, and the cement concrete is composed by using the cement composition. PCOPYRIGHT: (C)2004,JPO