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A platform for research: civil engineering, architecture and urbanism
Spraying high-performance concrete and preparation method thereof
The invention discloses sprayed high-performance concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete comprises the following raw materials: cement, fly ash, silica fume, metakaolin, machine-made sand, water, a water reducing agent and steel fibers. The preparation method specifically comprises the following steps: mixing cement, fly ash, silica fume, metakaolin and machine-made sand, adding steel fibers, adding a water reducing agent and water to form slurry, and spraying the slurry to a sprayed surface to obtain the sprayed high-performance concrete. The obtained concrete is applied to tunnel lining. The sprayed high-performance concrete prepared by the invention overcomes the defects of low strength, poor toughness and poor durability of traditional sprayed concrete, and relieves environmental pollution caused by building construction; the springback rate is reduced, the one-time spraying layer thickness is increased, the performance of sprayed concrete is improved, then the engineering quality is effectively improved, material waste is reduced, and cost is reduced.
本发明公开了一种喷射高性能混凝土及其制备方法，属于混凝土技术领域。该混凝土的原料包括水泥、粉煤灰、硅灰、偏高岭土、机制砂、水、减水剂和钢纤维。具体为：将水泥、粉煤灰、硅灰、偏高岭土和机制砂进行拌合后，加入钢纤维，然后加入减水剂和水形成浆体，再喷射到受喷面上，即可得到喷射高性能混凝土。将得到的混凝土应用于隧道衬砌。本发明制备的喷射高性能混凝土改善了传统喷射混凝土所存在的强度低、韧性和耐久性差的缺陷，缓解了因建筑施工对环境的污染；降低了回弹率、增加一次喷层厚度，提高了喷射混凝土的性能，进而有效提升工程质量，减少材料浪费，且降低了成本。
Spraying high-performance concrete and preparation method thereof
The invention discloses sprayed high-performance concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete comprises the following raw materials: cement, fly ash, silica fume, metakaolin, machine-made sand, water, a water reducing agent and steel fibers. The preparation method specifically comprises the following steps: mixing cement, fly ash, silica fume, metakaolin and machine-made sand, adding steel fibers, adding a water reducing agent and water to form slurry, and spraying the slurry to a sprayed surface to obtain the sprayed high-performance concrete. The obtained concrete is applied to tunnel lining. The sprayed high-performance concrete prepared by the invention overcomes the defects of low strength, poor toughness and poor durability of traditional sprayed concrete, and relieves environmental pollution caused by building construction; the springback rate is reduced, the one-time spraying layer thickness is increased, the performance of sprayed concrete is improved, then the engineering quality is effectively improved, material waste is reduced, and cost is reduced.
本发明公开了一种喷射高性能混凝土及其制备方法，属于混凝土技术领域。该混凝土的原料包括水泥、粉煤灰、硅灰、偏高岭土、机制砂、水、减水剂和钢纤维。具体为：将水泥、粉煤灰、硅灰、偏高岭土和机制砂进行拌合后，加入钢纤维，然后加入减水剂和水形成浆体，再喷射到受喷面上，即可得到喷射高性能混凝土。将得到的混凝土应用于隧道衬砌。本发明制备的喷射高性能混凝土改善了传统喷射混凝土所存在的强度低、韧性和耐久性差的缺陷，缓解了因建筑施工对环境的污染；降低了回弹率、增加一次喷层厚度，提高了喷射混凝土的性能，进而有效提升工程质量，减少材料浪费，且降低了成本。
Spraying high-performance concrete and preparation method thereof
一种喷射高性能混凝土及其制备方法
WANG JING (author) / OH SONG-TAEK (author) / ZHANG YUNLONG (author) / QIAN XUESONG (author) / MA LIJUN (author) / GAO CHUNMEI (author) / ZHANG HUZHU (author) / QU XIAOLONG (author) / YU MIN (author) / ZHANG KE (author)
2023-05-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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