Adhesive steel reinforcement, also known as adhesive steel plate reinforcement, is the process of bonding steel plates to the surface of concrete components using high-performance epoxy adhesives, forming a unified whole between the steel plates and concrete. The good tensile strength of the steel plates is utilized to enhance the load-bearing capacity and stiffness of the components.

The advantages of steel plate reinforcement: steel plates are used instead of steel bars, and high-strength structural adhesives with adhesive properties are used to firmly bond steel plates to the surface of concrete components, increasing the strength of reinforced concrete structures, improving the load-bearing capacity of structures, and suppressing the development of cracks and deflection in components. The construction is short, flat, and fast, and can be carried out without stopping production. It does not affect the appearance and size of the structure, and the increase in structural weight is minimal.

Construction process of bonded steel reinforcement:

Adhesive surface treatment → Adhesive preparation → Coating and pasting → Pressure curing → Inspection → Maintenance

Construction method

1. Adhesive surface treatment

Chisel off the decorative layer on the concrete surface, and then use an angle grinder to polish out the surface layer by 1-2mm. Use leveling glue to repair and level larger depressions, blow clean with a hair dryer after polishing, and wait for the adhesive surface to dry before use.

The adhesive surface of the B steel plate needs to be polished and rust removed with an angle grinder, and must be wiped clean with a cloth before use

2. Adhesive preparation

Mix according to the adhesive instructions, use a weighing device to mix, and stir evenly with a mixer before use

3. Glue application and pasting

Prepare the adhesive and apply it to the bonding surface of the steel plate with a greasy knife, with a thickness of 4mm in the middle and 2mm at the edges, for bonding. Use a fixed pressure system for fixation, apply appropriate pressure, and stop the adhesive just from the edge of the steel plate.

4. Pressure curing

a. Use expansion bolts for compression fixation, and there should be no disturbance during the curing period.

5. Inspection

If the effective bonding area of the anchorage zone is less than 90%, the steel plate must be peeled off and re bonded

6. Maintenance

a. After passing the inspection, epoxy red lead paint must be applied twice on the surface of the steel plate to prevent rust