A method for making cracks in concrete

Abstract

The invention discloses a method for making concrete cracks, comprising the steps of: 1. making a mold; 2. reserving tie bars; 3. pouring concrete; 4. drilling holes and cleaning of the drilling holes; 6. Configure concrete expansion agent and pour concrete expansion agent; 7. Concrete test block curing and concrete crack formation; 8. Concrete crack flushing. In the invention, the iron wire is poured into the concrete test block to ensure that the concrete test block will not be broken into two halves after cracks appear, and the concrete expansion agent is poured into the rows of drilled holes to make concrete cracks, and the rows of drilled holes can induce The formation of concrete cracks has a simple method, low cost, and can simulate natural cracks in actual engineering, providing a reliable basis for subsequent repair of tunnel cracks. The crack section is natural, which is desirable for studying practical problems.

Description

Technical field [0001] The present invention belongs to the technical field of concrete crack production, and more particularly to a method of concrete crack production. Background technique [0002] Tunnel cracks are one of the important hazards of tunnel lining, so the repair of tunnel cracks is of great significance for the operation and maintenance of completed tunnels. For the repair of tunnel cracks, the composite material is mainly used, and the composite material is first passed through the chamber test, followed by repairing the crack of the tunnel itself. Therefore, the production of concrete test block cracks has become an essential key link in the test. In the existing technique, the simple cost of operation is made of a fixed mold. This method is clearly disadvantage that the production completed crack shape is single, and the crack section is smooth, and the research is simple problem, but for the project The study of complex problems seems to be non-targeted, and i...

AI Technical Summary

Problems solved by technology

In the existing technology, the method of simple operation and low cost all uses fixed molds to make cracks. The obvious disadvantage of this method is that the finished cracks have a single shape and a smooth crack section. It is desirable to study simple problems, but for engineering The research on the more complex problems in the study is not targeted, and it is not suitable for the production of large cracks; the use of new technologies such as 3D printing technology, complex and expensive methods can perfectly simulate the crack shape, but due to the cracks grow larger Its operation difficulty and cost increase accordingly. It is too complicated to study practical engineering problems, such as exploring the sealing effect of new materials, and has no direct guiding significance for the sealing of natural cracks in actual engineering.

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