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Low-shrinkage ultra-high performance concrete and preparation method thereof
The invention discloses low-shrinkage ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of concrete. The shrinkage ultra-high performance concrete is prepared from the following components in parts by mass: 100 parts of cement, 25 to 100 parts of mineral admixture, 2.1 to 3.5 parts of high-performance water reducing agent, 5 to 10 parts of expanding agent, 0.12 to 0.2 part of thickening time control agent, 2.5 to 4 parts of reinforcing agent, 100 to 160 parts of sand, 1.5 to 3 parts of fiber and 18 to 30 parts of water, the mineral admixture is a product obtained by cofiring the high-aluminum solid waste and CaO at 800-900 DEG C and then carrying out shock cooling treatment. The low-shrinkage ultra-high-performance concrete has excellent compressive strength and tensile property, meanwhile, a large proportion of high-aluminum solid waste replaces part of cement and all silica fume in existing ultra-high-performance concrete, large chemical shrinkage caused by the cement and the silica fume in the hydration reaction process is greatly reduced, and the volume stability of a matrix is improved. A large amount of solid hazardous waste with high aluminum oxide content is used, so that the production and construction cost is reduced, and meanwhile, a method for comprehensively utilizing solid hazardous waste resources is provided.
本发明公开了一种低收缩超高性能混凝土及其制备方法，属于混凝土技术领域。收缩超高性能混凝土，其制备原料按质量份数计包括如下组分：水泥100份、矿物掺合料25～100份、高性能减水剂2.1～3.5份、膨胀剂5～10份，调凝剂0.12～0.2份、增强剂2.5～4份、砂100～160份、纤维1.5～3份、水18～30份；所述矿物掺合料为高铝固废与CaO在800‑900℃下共烧后骤冷处理的产物。所述低收缩超高性能混凝土具有优越的抗压强度和拉伸性能，同时大比例的高铝固废取代现有超高性能混凝土中部分水泥与全部硅灰，大幅降低了水化反应过程中水泥和硅灰带来的较大的化学收缩，提升了基体体积稳定性。大量的使用了高氧化铝含量的固危废弃物，降低生产建造成本的同时，提供了一种固危废资源综合利用的方法。
Low-shrinkage ultra-high performance concrete and preparation method thereof
The invention discloses low-shrinkage ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of concrete. The shrinkage ultra-high performance concrete is prepared from the following components in parts by mass: 100 parts of cement, 25 to 100 parts of mineral admixture, 2.1 to 3.5 parts of high-performance water reducing agent, 5 to 10 parts of expanding agent, 0.12 to 0.2 part of thickening time control agent, 2.5 to 4 parts of reinforcing agent, 100 to 160 parts of sand, 1.5 to 3 parts of fiber and 18 to 30 parts of water, the mineral admixture is a product obtained by cofiring the high-aluminum solid waste and CaO at 800-900 DEG C and then carrying out shock cooling treatment. The low-shrinkage ultra-high-performance concrete has excellent compressive strength and tensile property, meanwhile, a large proportion of high-aluminum solid waste replaces part of cement and all silica fume in existing ultra-high-performance concrete, large chemical shrinkage caused by the cement and the silica fume in the hydration reaction process is greatly reduced, and the volume stability of a matrix is improved. A large amount of solid hazardous waste with high aluminum oxide content is used, so that the production and construction cost is reduced, and meanwhile, a method for comprehensively utilizing solid hazardous waste resources is provided.
本发明公开了一种低收缩超高性能混凝土及其制备方法，属于混凝土技术领域。收缩超高性能混凝土，其制备原料按质量份数计包括如下组分：水泥100份、矿物掺合料25～100份、高性能减水剂2.1～3.5份、膨胀剂5～10份，调凝剂0.12～0.2份、增强剂2.5～4份、砂100～160份、纤维1.5～3份、水18～30份；所述矿物掺合料为高铝固废与CaO在800‑900℃下共烧后骤冷处理的产物。所述低收缩超高性能混凝土具有优越的抗压强度和拉伸性能，同时大比例的高铝固废取代现有超高性能混凝土中部分水泥与全部硅灰，大幅降低了水化反应过程中水泥和硅灰带来的较大的化学收缩，提升了基体体积稳定性。大量的使用了高氧化铝含量的固危废弃物，降低生产建造成本的同时，提供了一种固危废资源综合利用的方法。
Low-shrinkage ultra-high performance concrete and preparation method thereof
一种低收缩超高性能混凝土及其制备方法
CHEN WEILE (author) / CUI BING (author) / LIU JIAPING (author) / ZHANG TAIKE (author) / KANG RUI (author) / HAN FANGYU (author) / WU LINGZHENG (author) / XU WEN (author) / XU JUN (author) / LU JINGYU (author)
2024-12-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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