I. Product Overview
Dendritic Macromolecular Epoxy Concrete Repair Adhesive (Winter Grade) was developed specifically for low-temperature winter conditions. It features ease of application and an optimized curing rate. It is primarily used for the anti-corrosion maintenance, renovation, and structural strengthening of high-strength concrete structures—such as roads, bridges, bridge piers, and track slabs—including the repair of cracks, surface defects, and potholes. It is also utilized for the seismic strengthening of concrete columns, platforms, and other earthquake-resistant structures, as well as for repairs required under seismic conditions; additionally, it is suitable for general building repairs and waterproofing applications.
II. Product Data
1. Reference Working Time:
2. Curing Time Reference (1.5 kg Adhesive):
Note: Curing time is determined by the volume of adhesive applied and the ambient temperature at the construction site; it may be subject to moderate extension or reduction. Application at temperatures below 0°C is not recommended. The provided data is for reference purposes only and may be adjusted based on specific circumstances to ensure that the installation is completed within the designated working time.
3. Key Performance Characteristics:
III. Product Characteristics
1. Possesses strong adhesion to existing concrete; resistant to peeling and cracking; its performance is far superior to that of conventional concrete.
2. Curing marks the completion of construction; no post-application curing is required, saving both time and labor.
3. Features low viscosity, excellent thixotropy, and high compressive strength, facilitating convenient application on vertical and overhead surfaces.
4. Resistant to weathering, aging, and chemical corrosion; offers a service life at least 20 years longer than that of conventional cement, thereby eliminating the need for frequent repairs and replacements.
5. Contains no volatile organic compounds (VOCs); is non-toxic, odorless, safe, and environmentally friendly.
IV. Application Instructions
1. This product consists of two components, A and B, packaged in separate containers, with a mixing ratio (by weight) of 2:1. To use, simply pour the entire contents of Component B directly into the container holding Component A, then mix thoroughly using either a power mixer or manually until a uniform consistency is achieved.
2. If the required quantity for a single application is less than a full kit, the components may be weighed out according to specific needs. Measure out Components A and B at the 2:1 weight ratio, mix them thoroughly in a clean, dry container (free of water and oil), and then apply.
V. Construction Steps
1. Thoroughly clean the application surface to remove all loose debris, dust, and dirt; ensure the surface is completely dry and free of moisture.
2. Mix Components A and B thoroughly at the 2:1 weight ratio; the mixing process should be completed within 5 minutes. 3. Evenly fill or apply the adhesive mixture to the areas requiring repair or reinforcement:
(1) Cracks on the substrate surface: Fill the adhesive into the cracks and within a 1 cm radius of the crack edges; ensure a filling depth of at least 1 cm, and finally, smooth the surface flat.
(2) Repair of damaged defects: Determine the required amount of adhesive based on the volume of the defect to be repaired; apply the adhesive to the defect site and smooth it out. If the defect is large, use wooden or plastic formwork to enclose the defect area before filling and shaping (a small amount of machine oil may be applied to the surface of the wooden formwork to facilitate easy removal after curing).
(3) Structural surface protection: Apply the adhesive evenly across the substrate surface, ensuring an application thickness of 2–3 mm, and smooth the surface flat.
(4) Application thickness ≥ 10 cm: It is recommended to use formwork for shaping and to perform the application in layers. Each layer should not exceed 10 cm in thickness; proceed to apply the next layer only after the previous layer has reached its initial curing stage.
4. Allow the adhesive to cure; the application process is then complete.
VI. Precautions
1. Application temperature range: 5°C to 15°C.
2. Long-term operating environment temperature: ≤ 70°C.
3. Do not apply during rainy or foggy weather; ensure the application surface is completely dry at the time of application.
4. Do not expose the adhesive to water before it has fully cured.
5. Please wear protective gloves, safety goggles, and/or a protective face mask during application.
VII. Storage
Store in a sealed container in a dry environment at room temperature. Avoid direct sunlight and moisture. Shelf life: 12 months.
Note: Prior to application, please contact our technical staff: Engineer Zuo at 15204382131 or Engineer Liu at 18263131523.
Scan the QR code to watch the application video:
The above recommendations are derived from reliable information; they serve as advice only and do not constitute a guarantee. Given the numerous factors involved—including formulation, manufacturing processes, and application environments—please conduct preliminary testing to confirm suitability. Chenyuan Molecular offers no warranties, express or implied, and assumes no liability for any consequences arising from other uses. Chenyuan Molecular expressly disclaims any implied warranties of fitness for a particular purpose.
