Solution of poor bond strength between steel plate and concrete

The gap between steel plate and concrete is not uniform, and the injection speed is too fast,so poor bond strength between steel plate and concrete

The injection hole and the vent hole are not set properly, and the glue injection construction sequence is incorrect

Solution

1)The spacing between the rubber injection hole and the exhaust hole should be determined according to the actual situation, generally should not exceed 50CM

2)The bottom of the adhesive steel plate should be equipped with plastic injection holes. Vent holes should be provided at the highest position, edge, and corner. After confirming that the exhaust hole has been filled with plastic and the glue has been evenly discharged, the exhaust hole is sealed. Blocking

3)Adhere to the principle of low to high and from one end to the other during glue injection to avoid unordered operation and to ensure that the rubber injection nozzle and exhaust hole are adjacent to each other and then change the position of glue injection.

4)When tapping, tap the steel plate with a small hammer to determine the flow direction of the glue and adjust the operation in time


The gap between steel plate and concrete is not uniform, and the injection speed is too fast

Solution

1)Make sure that the gap between steel plate and concrete is as uniform as possible

2)Uniformly low-speed glue injection to ensure the glue penetration and flow time

3)When tapping the rubber, tap the steel plate with a small hammer to determine the flow direction of the glue and adjust the operation in time.


As the glue penetrates into the concrete, it causes the glue layer at the top or corner to become empty

Solution

1)Low speed and slow injection

2)The rubber injection hole and vent hole in the highest position should be held in pressure, and should be promptly added when the position of the glue drops.

3)Vent hole should be set at the highest position or corner


Lack of sealing leads to leakage of glue

Solution

1)Ensure that the steel plate, injection nozzle, and vent hole are not leaky

2)Timely plugging of rubber injection nozzles and vents


Construction pause

Solution

1)Full preparation before construction

2)The glue layer has been found to have become void after curing, and the steel plate can be used to make additional injections of plastic injection holes and exhaust holes.


Material link: http://www.horseen.com/steel-plate-bonding-system/perfusion-steel-plate-bonding



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