Method for reinforcing construction structure by fiber knitted net and fine concrete

Abstract

The invention belongs to the technical field of concrete reinforcement and relates to a method for reinforcing concrete with a fibrage net and a cement-based material. The method is to pour the fibrage net the total thickness of which is between 10 and 20 millimeters and fine concrete on the outer surface of a structure, and is characterized by comprising the following steps that: drilling holes on the surface of the structure in the process of construction; using the short end foot of a U-shaped shear resistant pin of which the two end feet have different lengths to hook the fibrage net, and inserting the long end foot thereof into the hole after a building structural adhesive is smeared on the long end foot; spraying the fine concrete after the adhesive is solidified; using the short end foot of a U-shaped hook of which the two end feet have different lengths to hook a second layer fibrage net, and inserting the long end foot thereof to the fine concrete; and spraying the fine concrete. The method can avoid the generation of interface micro cracks at high stress, effectively prevent interface peeling damages, reinforces building structures reliably, simply, efficiently and environmental protection, and is applicable to reinforcing and repairing various types of structures.

Description

technical field [0001] The invention belongs to the technical field of concrete reinforcement and reinforcement, and relates to a method for reinforcing and reinforcing concrete with fiber braided nets and cement-based materials. Background technique [0002] The structure will age after long-term use, and its performance will be degraded, damaged or even destroyed due to environmental erosion, physical effects or other factors. There are a large number of concrete structures that need to be reinforced and cracked in civil engineering structures. Commonly used structural reinforcement methods include enlarging section reinforcement method, external prestressed reinforcement method, outsourcing steel reinforcement method, shotcrete method, additional component reinforcement method, additional fulcrum reinforcement method, etc. These reinforcement methods are generally more complicated in construction. [0003] With the advent of building structural adhesives such as epoxy re...

AI Technical Summary

Problems solved by technology

If these two technologies are applied to TRC to strengthen existing buildings, they can improve the performance of fine concrete and strengthen the combination of fiber woven mesh and fine concrete, but they cannot solve the problem of affecting the reinforcement effect due to interface peeling

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