NOVEL CONCRETE MIXTURE AND CEMENT MIXTURE

摘要

PROBLEM TO BE SOLVED: To provide a high performance concrete, especially super high performance concrete, having sufficient compression resistance although there are no silica fumes.SOLUTION: There is provided a concrete containing Portland cement of 100 pts.wt., one kind of a single silica sand or a lime stone sand having a particle size distribution of D10 to D90 of 0.063 to 5 mm or a mixture of silica sand or lime stone sand having D10 to D90 of the finest fine sand of 0.063 to 1 mm and D10 to D90 of the coarsest sand of 1 to 4 mm (preferably 2 kinds of sands) of 50 to 200 pts.wt., a particulate substance which is a non-pozzolan material having an average particle diameter of less than 15μm of 10 to 50 pts.wt., a high performance water reducing agent of 0.1 to 10 pts.wt. and water of 10 to 30 pts.wt. and no silica fumes, and having 28 days compressive strength of 100 MPa or more.