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Good glue comes from KANGSHIDE

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Good glue comes from KANGSHIDE

27 YEARS

Kangshide Decorative Material Technology Co Ltd

Kangshide Decorative Material Technology Co Ltd was established in 1995, The company has a modern production plant of 9000 square meters. The company's main products are acrylate waterproof sealant, acrylate emulsion...

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Kangshide Decorative Material Technology Co Ltd was established in 1995

Kangshide Decorative Material Technology Co Ltd was established in 1995, covering an area of ​​more than 7,000 square meters. The company has more than 5,000 square meters of modern production plants. The company's main products are acrylate waterproof sealant, acrylate emulsion, with an annual production capacity of more than 12,000 tons. The company is located in the Yangtze River Delta, a famous historical and cultural city, Changshu.

2022-09-07

Repair Reinforced Concrete Cracks with Epoxy Adhesive

Due to the long-term dynamic load of buildings, cracks appear in concrete components and steel bars in concrete are corroded, thereby reducing the safety factor of concrete buildings and even leading to building collapse accidents. Since the cracks of concrete are only signs of surface damage, the width cannot be observed by conventional methods, so it is difficult to make effective treatment. Epoxy resin adhesive has the characteristics of strong adhesion, small shrinkage, good chemical stability, and can be cured at room temperature. It can be used to repair and strengthen the cracks of concrete and has received good results. 1. Formulating the adhesive Since there are many formulations of epoxy resin adhesives, the formulations for different environments and different uses are also different. Now for the repair and reinforcement of concrete projects, two more suitable epoxy resin adhesive formulations are recommended. stick a, Formula 1: E-11 epoxy resin 100, furfurylidene acetone 70, acetone 20~40, diethylenetriamine 20~22. b, formula 2: E-11 epoxy resin 100, furfural 25~50, acetone 80, 703 20~30, DMP-30 3~10, ethylenediamine 15, KH-550 6, this formula is suitable for low temperature in winter ( Use at minus 11 degrees to minus 7 degrees). 2. Construction method: ①Surface treatment Remove the surface dust of concrete cracks, and chisel U-shaped grooves with a width of 10mm and a depth of 15mm along the cracks. ②Install the injection nozzle and insert the injection nozzle into the U-shaped groove, and the distance between the adjacent injection nozzles is 500-1500mm. ③The sealing seam is sealed with fast curing adhesive to fill the U-shaped groove, and at the same time, the glue injection nozzle is firmly fixed. ④Pour the adhesive. Connect and fasten the high-pressure glue delivery tube on the glue injection tank with the glue injection nozzle, and then use the air compressor to input the high-pressure gas into the tank. Check whether the glue nozzle overflows. Once found, stop the glue and connect the hose to the glue injection nozzle. Start the machine to inject glue until the end. ⑤ After curing and curing concrete cracks, it is necessary to ensure that the adhesive is cured naturally in the cracks, and attention should be paid to prevent the concrete structure from being subjected to force and vibration, which will affect the effect of glue injection repair or reinforcement. The repair of concrete cracks is generally selected in the cold winter period, when the concrete shrinks and the cracks are the largest, it is convenient for the mortar to flow into the smallest cracks, so that the overall performance of the repaired concrete can achieve the expected effect.

2022-09-07

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