The invention relates to high-strength ultra-high-
toughness concrete and a preparation method thereof. The concrete is prepared from, by weight, 400-800 parts of
cement, 100-250 parts of
silica fume, 200-500 parts of
slag powder, 200-500 parts of
fly ash, 200-500 parts of
quartz powder, 800-1,000 parts of
quartz sand, 20-40 parts of a water
reducing agent, 180-250 parts of water and 15-25 parts of
polyethylene fibers. When the concrete is prepared, the
cement, the
silica fume, the
slag powder, the
fly ash, the
quartz powder and the quartz sand are added into a stirrer by weight, and the
dry powder is stirred for 2-3 min and fully mixed to be uniform; after stirring is finished, the mixed
dry powder is transferred into a mold, vibrating is conducted for 1-2 min for molding, curing and demolding are conducted, and then the high-strength ultra-high-
toughness concrete is prepared. Compared with the prior art, the concrete has the advantages that the
compressive strength reaches 120-150 MPa, the
breaking strength reaches 30-50 MPa, the tensile strength reaches 15-22 MPa, and the tensile elongation reaches 4%-8% and has the very good application prospect.