A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In-situ preparation method of carbonized film on concrete surface
The invention belongs to the technical field of concrete protective layers, and particularly relates to an in-situ preparation method of a concrete surface carbonized film. According to the method, the formed concrete is placed in a dry environment to be pre-cured and then subjected to early-stage carbonization curing, a certain water loss gradient is formed on the outer surface of the concrete through a specific pre-curing system, in-situ preparation of a compact and thin carbonization protective layer on the surface of the concrete is achieved accordingly, and meanwhile due to the strict and controllable carbonization depth of the carbonization protective layer, in-situ preparation of the carbonization protective layer is achieved. The reduction of the pH value of the surface of the reinforcing steel bar caused by too large early-stage carbonization depth is avoided, so that the problem that the surface of the reinforcing steel bar in the reinforced concrete is easy to rust in the early-stage carbonization curing process can be solved.
本发明属于混凝土防护层技术领域，具体涉及混凝土表面碳化膜的原位制备方法。本发明将成型的混凝土置于干燥环境中进行预养护，再进行早期碳化养护，通过特定的预养护制度，在混凝土外表面处形成一定的失水梯度，并以此实现混凝土表面致密且薄的碳化防护层原位制备，同时因为其严格可控的碳化深度，避免了早期碳化深度过大而引起的钢筋表面处pH值的下降，因此，能够解决早期碳化养护过程中钢筋混凝土内钢筋表面易锈蚀的问题。
In-situ preparation method of carbonized film on concrete surface
The invention belongs to the technical field of concrete protective layers, and particularly relates to an in-situ preparation method of a concrete surface carbonized film. According to the method, the formed concrete is placed in a dry environment to be pre-cured and then subjected to early-stage carbonization curing, a certain water loss gradient is formed on the outer surface of the concrete through a specific pre-curing system, in-situ preparation of a compact and thin carbonization protective layer on the surface of the concrete is achieved accordingly, and meanwhile due to the strict and controllable carbonization depth of the carbonization protective layer, in-situ preparation of the carbonization protective layer is achieved. The reduction of the pH value of the surface of the reinforcing steel bar caused by too large early-stage carbonization depth is avoided, so that the problem that the surface of the reinforcing steel bar in the reinforced concrete is easy to rust in the early-stage carbonization curing process can be solved.
本发明属于混凝土防护层技术领域，具体涉及混凝土表面碳化膜的原位制备方法。本发明将成型的混凝土置于干燥环境中进行预养护，再进行早期碳化养护，通过特定的预养护制度，在混凝土外表面处形成一定的失水梯度，并以此实现混凝土表面致密且薄的碳化防护层原位制备，同时因为其严格可控的碳化深度，避免了早期碳化深度过大而引起的钢筋表面处pH值的下降，因此，能够解决早期碳化养护过程中钢筋混凝土内钢筋表面易锈蚀的问题。
In-situ preparation method of carbonized film on concrete surface
混凝土表面碳化膜的原位制备方法
DONG BIQIN (author) / HONG SHUXIAN (author) / XING FENG (author) / FAN SHENGXIN (author) / PENG YI (author)
2024-09-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of self-carbonized recycled aggregate concrete
| European Patent Office | 2024
Preparation method of rapidly carbonized seawater sea sand concrete
| European Patent Office | 2022
CONCRETE REGENERATED POWDER CARBONIZED BRICK AND PREPARATION METHOD THEREFOR
| European Patent Office | 2023
Preparation method of carbonized brick and carbonized brick
| European Patent Office | 2024