Ordinary concrete and ultra-high performance concrete interface bonding treatment method

Abstract

The invention discloses a common concrete and ultra-high performance concrete interface bonding treatment method. A common concrete layer, an ultra-high performance concrete layer and twisted steel are included. The common concrete layer is subjected to chiseling through a chiseling machine, cross grooves are carved through a grooving machine, punching is conducted, twisted steel is implanted, and the ultra-high-performance concrete layer is poured. The construction is simple and convenient, and the bonding strength of the bonding surface can be effectively improved.

Description

Technical Field

[0001] The invention patent belongs to the field of civil engineering, and in particular relates to a method for treating the interface bonding between ordinary concrete and ultra-high performance concrete. Background Art

[0002] With the continuous development of civil engineering and the increasing demand for traffic, existing bridge structures often suffer from cracking, steel bar corrosion and other defects during operation. Traditional reinforcement methods such as ordinary concrete cross-section enlargement, steel plate or composite material bonding have limited improvement on the self-weight, rigidity and crack resistance of bridge structures. Ultra-high performance concrete is highly valued in reinforcement due to its light weight and high strength. However, the reliability of the reinforcement interface is extremely important. Therefore, the present invention provides a method for bonding the interface between ordinary concrete and ultra-high performance concrete. Summary of the invention

[0003] In view of the above problems, the present invention provides a method for treating the interface bonding between ordinary concrete and ultra-high performance concrete, comprising ordinary concrete (1), ultra-high performance concrete (2) and vertical curved threaded steel bars (3). The ordinary concrete (1) is roughened, grooved and steel bars are planted, and then the ultra-high performance concrete (2) is poured on the wet surface.

[0004] Furthermore, the surface of the ordinary concrete (1) is first roughened using a roughening machine, and the average depth of the roughening is not less than 4 mm.

[0005] Furthermore, after the roughening work is completed on the surface of the ordinary concrete (1), it is cleaned with a water gun, and then a groover is used to groove the roughened surface. The groove depth is not less than 3 mm, and the groove line shape must be such that each line is inclined and crosses each other to form a diamond shape.

[0006] Furthermore, after the ordinary concrete (1) is grooved, holes are punched on the surface, and after the holes are cleaned, vertical bent steel bars (3) are inserted into the holes and injected with anchor glue for fixation, and the bent spaces of the vertical bent steel bars (3) are used to support the steel bars of the ultra-high performance concrete (2).

[0007] The invention adopts the method of roughening and grooving combined with reinforcing bar planting, which is simple and convenient to construct, can effectively improve the bonding strength of the joint surface, and increase the reliability of structural reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0009] Figure 1 It is a schematic diagram of the interface bonding treatment between ordinary concrete and ultra-high performance concrete. DETAILED DESCRIPTION

[0010] The present invention is further described below in conjunction with the accompanying drawings of the specification. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0011] like Figure 1 As shown, a method for treating the interface bonding between ordinary concrete and ultra-high performance concrete comprises ordinary concrete (1), ultra-high performance concrete (2) and vertical curved threaded steel bars (3). The ordinary concrete (1) is roughened, grooved and steel bar-embedded, and then the ultra-high performance concrete (2) is poured on the wet surface.

[0012] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for treating the interface bonding between ordinary concrete and ultra-high performance concrete, characterized in that: It comprises ordinary concrete (1), ultra-high performance concrete (2) and vertical curved threaded steel bars (3). The ordinary concrete (1) is roughened, grooved and steel-planted, and then the ultra-high performance concrete (2) is poured on the wet surface.

2. The method for treating the interface bonding between ordinary concrete and ultra-high performance concrete according to claim 1, characterized in that: The surface of the ordinary concrete (1) is first roughened using a roughening machine, and the average depth of the roughening is not less than 4 mm.

3. The method for treating the interface bonding between ordinary concrete and ultra-high performance concrete according to claim 1, characterized in that: After the roughening work is completed on the surface of the ordinary concrete (1), a water gun is used to clean the surface, and then a groove cutting machine is used to groove the roughened surface. The groove depth is not less than 3 mm, and the groove line shape must be such that each line is inclined and crosses each other to form a diamond shape.

4. The method for treating the interface bonding between ordinary concrete and ultra-high performance concrete according to claim 1, characterized in that: After the ordinary concrete (1) is grooved, holes are punched on the surface. After the holes are cleaned, vertical bent steel bars (3) are inserted into the holes and injected with anchor glue for fixation. The bent spaces of the vertical bent steel bars (3) are used to support the steel bars of the ultra-high performance concrete (2).

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