Ultra-high performance concrete applying machine-made sand and preparation method of ultra-high performance concrete

• Main Authors: WANG RONG, HAN TING, SU LIPING, QUE XIAOPING
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• 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 invention discloses ultra-high performance concrete applying machine-made sand and a preparation method of the ultra-high performance concrete. The technical problems that in the prior art, high-strength concrete is poor in corrosion resistance, poor in long-term durability and short in service life are solved. The sand comprises the following raw materials in parts by weight: 100-130 parts of machine-made sand; 40 to 60 parts of cement; 10 to 20 parts of silica fume; 15 to 20 parts of microbeads; 8-15 parts of mineral powder; 3-5 parts of an expanding agent; 16 to 20 parts of water; 3-5 parts of a water reducing agent; and 5-20 parts of steel fiber. The ultra-high performance concrete applying the machine-made sand has ultra-high mechanical properties and ultra-high durability. 本发明公开了一种应用机制砂的超高性能混凝土及其制备方法，解决了现有技术中高强度混凝土抗腐蚀性能较差、长期耐久性差、寿命较短的技术问题。它包括下述重量份的原料：机制砂100-130份；水泥40-60份；硅灰10-20份；微珠15-20份；矿粉8-15份；膨胀剂3-5份；水16-20份；减水剂3-5份；钢纤维5-20份。本发明中的应用机制砂的超高性能混凝土具有超高力学性能和超高耐久性。