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A platform for research: civil engineering, architecture and urbanism
Seawater sea sand high-performance overwater emergency repair concrete and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to emergency repair concrete which is prepared from Portland cement, sulphoaluminate cement, gypsum, stone powder, silica fume, a retarder, sea coarse sand, sea fine sand, a polycarboxylic acid high-efficiency water reducing agent and seawater according to a certain proportion. The high-performance rush-repair concrete prepared by adopting the modified cement-based gel composite material as the raw material and the seawater as the mixing water has the advantages that the setting time is short, the initial setting time is 37-45 minutes, the early strength is high, and the compressive strength in 4 hours is 12.7-31.6 MPa. The seawater-sea sand high-performance rush-repair concrete can be mixed with seawater, use of fresh water is reduced, meanwhile, due to the fact that the seawater-sea sand high-performance rush-repair concrete is high in condensation speed and early strength, a novel construction material is provided for rapid rush-repair of concrete, and the seawater-sea sand high-performance rush-repair concrete is especially suitable for high-performance repair of areas lacking fresh water and building sand and stone. And meanwhile, the material is also suitable for repair work of seaside city dams with rich seawater and sea sand resources, and the preparation method is simple and wide in application.
本发明属于建筑材料技术领域，具体涉及一种抢修混凝土，由硅酸盐水泥、硫铝酸盐水泥、石膏、石粉、硅灰、缓凝剂、海粗砂、海细砂、聚羧酸高效减水剂和海水按一定比例配制而成。本发明通过采用改性的水泥基胶凝复合材料作为原材料，海水作为拌合水所制得的高性能抢修混凝土，其凝结时间快，初凝时间为37‑45min，早期强度高，其4小时抗压强度为12.7‑31.6MPa。本发明海水海砂高性能抢修混凝土可用海水进行拌和，减少了淡水的使用，同时由于其凝结速度快，早期强度高，为快速抢修混凝土提供了一种新型的施工材料，特别适用于淡水较为匮乏，缺少建筑砂石的区域进行高性能修补，同时也适用于海水海砂资源较为丰富的海边城市堤坝抢修工作，本发明制备方法简单，应用广泛。
Seawater sea sand high-performance overwater emergency repair concrete and preparation method thereof
The invention belongs to the technical field of building materials, and particularly relates to emergency repair concrete which is prepared from Portland cement, sulphoaluminate cement, gypsum, stone powder, silica fume, a retarder, sea coarse sand, sea fine sand, a polycarboxylic acid high-efficiency water reducing agent and seawater according to a certain proportion. The high-performance rush-repair concrete prepared by adopting the modified cement-based gel composite material as the raw material and the seawater as the mixing water has the advantages that the setting time is short, the initial setting time is 37-45 minutes, the early strength is high, and the compressive strength in 4 hours is 12.7-31.6 MPa. The seawater-sea sand high-performance rush-repair concrete can be mixed with seawater, use of fresh water is reduced, meanwhile, due to the fact that the seawater-sea sand high-performance rush-repair concrete is high in condensation speed and early strength, a novel construction material is provided for rapid rush-repair of concrete, and the seawater-sea sand high-performance rush-repair concrete is especially suitable for high-performance repair of areas lacking fresh water and building sand and stone. And meanwhile, the material is also suitable for repair work of seaside city dams with rich seawater and sea sand resources, and the preparation method is simple and wide in application.
本发明属于建筑材料技术领域，具体涉及一种抢修混凝土，由硅酸盐水泥、硫铝酸盐水泥、石膏、石粉、硅灰、缓凝剂、海粗砂、海细砂、聚羧酸高效减水剂和海水按一定比例配制而成。本发明通过采用改性的水泥基胶凝复合材料作为原材料，海水作为拌合水所制得的高性能抢修混凝土，其凝结时间快，初凝时间为37‑45min，早期强度高，其4小时抗压强度为12.7‑31.6MPa。本发明海水海砂高性能抢修混凝土可用海水进行拌和，减少了淡水的使用，同时由于其凝结速度快，早期强度高，为快速抢修混凝土提供了一种新型的施工材料，特别适用于淡水较为匮乏，缺少建筑砂石的区域进行高性能修补，同时也适用于海水海砂资源较为丰富的海边城市堤坝抢修工作，本发明制备方法简单，应用广泛。
Seawater sea sand high-performance overwater emergency repair concrete and preparation method thereof
一种海水海砂高性能水上抢修混凝土及其制备方法
DAI XIAOQING (author) / TAN YIZHONG (author) / ZHANG ZHONGWEI (author) / DUAN LIQUN (author) / SUN MINQIAN (author) / XIONG ZIMING (author) / WANG MINGYANG (author) / LIN YUAN (author) / DONG LU (author) / YAO YAO (author)
2023-09-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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