A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sprayed concrete and preparation method thereof
The invention relates to the technical field of concrete, and discloses sprayed concrete and a preparation method thereof. According to the invention, an expanding agent is added, and the strong expansion operation of the expanding agent blocks a part of large cavities and defects in the high-performance concrete in the solidification and maintenance stage of the high-performance concrete, so that the anti-cracking and waterproof capabilities of the high-performance concrete structure are preliminarily improved. A waterproof nano powder is added, and the waterproof nano powder has a strong hydrophobic effect and a unique non-metal sheet structure, so that occlusion and connection among coarse and fine aggregates of the high-performance concrete can be effectively promoted, the contact area of a microstructure is enlarged, the porosity is reduced, and the compactness is improved; the movement of water in the high-performance concrete is reduced, the workability of a high-performance concrete mixture is improved, and bleeding and segregation are reduced; and movement of water and various acid radical ions in the high-performance concrete is effectively prevented, the high-performance concrete is protected against freeze-thaw damage and various severe environments, and the service life of the high-performance concrete is prolonged.
本发明涉及混凝土技术领域，公开了一种喷射混凝土及其制备方法。本发明通过加入膨胀剂，由于其强烈的膨胀作业在高性能混凝土凝固养护阶段就堵塞高性能混凝土中一部分比较大的空洞和缺陷，初步提高了高性能混凝土结构的抗裂防水能力。通过加入防水纳米粉，防水纳米粉具有强烈的憎水作用和独特的非金属片状结构，能有效促进高性能混凝土粗细骨料间的咬合、连接、扩大微观结构接触面积降低孔隙率提高密实性；减少高性能混凝土中水的移动，提高了高性能混凝土拌合物的合易性，降低泌水离析；有效阻止高性能混凝土中水及各种酸根离子的移动，保护高性能混凝土应对冻融破坏及各种恶劣环境，提高了高性能混凝土的使用寿命。
Sprayed concrete and preparation method thereof
The invention relates to the technical field of concrete, and discloses sprayed concrete and a preparation method thereof. According to the invention, an expanding agent is added, and the strong expansion operation of the expanding agent blocks a part of large cavities and defects in the high-performance concrete in the solidification and maintenance stage of the high-performance concrete, so that the anti-cracking and waterproof capabilities of the high-performance concrete structure are preliminarily improved. A waterproof nano powder is added, and the waterproof nano powder has a strong hydrophobic effect and a unique non-metal sheet structure, so that occlusion and connection among coarse and fine aggregates of the high-performance concrete can be effectively promoted, the contact area of a microstructure is enlarged, the porosity is reduced, and the compactness is improved; the movement of water in the high-performance concrete is reduced, the workability of a high-performance concrete mixture is improved, and bleeding and segregation are reduced; and movement of water and various acid radical ions in the high-performance concrete is effectively prevented, the high-performance concrete is protected against freeze-thaw damage and various severe environments, and the service life of the high-performance concrete is prolonged.
本发明涉及混凝土技术领域，公开了一种喷射混凝土及其制备方法。本发明通过加入膨胀剂，由于其强烈的膨胀作业在高性能混凝土凝固养护阶段就堵塞高性能混凝土中一部分比较大的空洞和缺陷，初步提高了高性能混凝土结构的抗裂防水能力。通过加入防水纳米粉，防水纳米粉具有强烈的憎水作用和独特的非金属片状结构，能有效促进高性能混凝土粗细骨料间的咬合、连接、扩大微观结构接触面积降低孔隙率提高密实性；减少高性能混凝土中水的移动，提高了高性能混凝土拌合物的合易性，降低泌水离析；有效阻止高性能混凝土中水及各种酸根离子的移动，保护高性能混凝土应对冻融破坏及各种恶劣环境，提高了高性能混凝土的使用寿命。
Sprayed concrete and preparation method thereof
一种喷射混凝土及其制备方法
ZHANG GUOMIN (author) / WANG WEIMIN (author) / GUO MIAOYING (author) / LI XINYUE (author) / SU YIFANG (author) / LI JIAXIN (author)
2021-11-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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