200 MPA-GRADE STEAM-CURING-FREE ULTRA-HIGH PERFORMANCE CONCRETE CONTAINING COARSE AGGREGATE, AND PREPARATION METHOD THEREFOR

• Main Authors: XIE, Enhui, XU, Yingxuan, GAO, Yuan, FENG, Liangping, REN, Jinghua, TIAN, Haitao
• Format: Patent
• Language: Chinese; English; French
• Published: 30.11.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The present disclosure relates to the technical field of concrete, and provides 200 MPa-grade steam-curing-free ultra-high performance concrete containing coarse aggregate, and a preparation method therefor. The ultra-high performance concrete comprises the following raw materials, in parts by mass: 100 parts of cement, 15-20 parts of silica fume, 30-35 parts of fly ash, 95-105 parts of fine aggregate, 85-140 parts of coarse aggregate, 20-25 parts of water, 2-5 parts of a water reducing agent and 19-33 parts of steel fibers. The components of the ultra-high performance concrete provided in the present disclosure mainly comprise conventional materials and waste materials; there are few raw materials; and the materials are easy to obtain and low cost. According to the preparation method for the ultra-high performance concrete provided in the present disclosure, the ultra-high performance concrete is subjected to forming maintenance by using a solar accelerated maintenance method; the concrete can be ensured to