Jintongbao Technology Group Co. , Ltd.
Interface Bonding Agent

Interface Bonding Agent

JTB-302 Interface Bonding Agent is manufactured using imported micro-emulsion technology and contains special components that provide good bonding strength, effectively and permanently resolving the issue of hollow cavities and debonding at new-to-old concrete interfaces.

Product Features

• Corrosion resistant
• Rust prevention
• Water-based & eco-friendly
• Applicable on damp substrates
• High crack resistance

Applications Scenarios

• Bonding new & old concrete: for construction joints, floor leveling; replaces roughening, prevents delamination & hollowing;
• Primer for concrete repair & strengthening: for local repairs, beam/column reinforcement, old foundation renovation; enhances adhesion, prevents peeling, degradation & corrosion

Construction Craft

• Surface preparation: Remove the loose parts on the surface of the concrete base layer, rinse off the surface dust and dry it. The base layer should be solid, free of cracks, dust and oil stains, and should not have phenomena such as sand shedding and hollowing, so as to ensure good adhesion between the base layer and the interface adhesive and the composite layer.
• Construction: Stir thoroughly before use. After mixing until uniform, apply JTB-302 Interface Bonding Agent evenly onto the substrate surface using a sprayer or roller. The coating shall be thin and uniform. After drying for 10 minutes, but no later than 3 hours, the overlay concrete or repair mortar can be placed. (Highest bond strength is achieved when concrete is placed 60 minutes after application.) Mix only as much material as can be used within approximately 15 minutes. Do not prepare excessive quantities per batch.

Precautions

Pay strict attention to substrate preparation: This step is critical. It is recommended to grind the substrate to expose sound aggregate and keep the surface dry.

Packaging and Storage

Reference Dosage: 
Adhesive solution: approx. 0.2–0.3 kg/㎡ (actual dosage varies with site conditions).

Storage Conditions: Store in a dry and cool area at 5 °C or above.

Shelf Life: 12 months for unopened products.

Safety Specifications

Wear a dust mask, safety goggles, and protective gloves during application;
In case of skin or eye contact, rinse immediately with plenty of clean water. Seek medical treatment promptly if symptoms are severe.

Key Technical Indicators
Project Technical indicators Test results
Shear bond strength (MPa) 28d ≥3.5 4
Positive tensile bond strength (MPa) 28d ≥2.5 2.9
Construction Gallery

JTB are committed to providing customers in all sectors with valuable products and
solutions that offer convenience and efficiency.

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About
Jintongbao Technology Group Co. , Ltd.
Jintongbao Technology Group Co., Ltd. is a service provider of reinforcement system solutions integrating R&D, production, sales and construction. Since its establishment, the company has been deeply engaged in the field of reinforcement.
Currently, it has three large-scale production bases in Zhenjiang, Jiangsu Province, Jinhua, Zhejiang Province, and Dongguan, Guangdong Province, with a total production capacity of over 500,000 tons. Among them, the factory in Zhenjiang, Jiangsu Province, holds an important position in the company's production system. The factory covers a vast area and has standardized, modern production facilities. The large-scale production layout enables it to have a strong capacity reserve, and its annual production capacity ranks among the top in the company's three major production bases. This enables the Zhenjiang factory to achieve large-scale, continuous production of grouting materials and other products and to respond quickly to large-scale supply demands. Meanwhile, we have a sales network covering the whole country as well as some countries and regions in Southeast Asia. We can ensure the convenience and efficiency of providing valuable products and solutions for customers in various fields, such as urban renewal, airports, Bridges and tunnels, waterproofing and anti-corrosion, wind power and nuclear power, etc.
Our company has always adhered to taking technological innovation as its core competitiveness and attaches great importance to and supports technological innovation.  Our R&D center is equipped with advanced experimental equipment and R&D tools, providing a solid hardware foundation for innovative work. Meanwhile, the R&D center boasts a high-level R&D team. As an industry benchmark leader, we attach great importance to industry innovation and were the 1st to propose the concept of "from reinforcement to pre-reinforcement". Actively leverage its industry experience and technological advantages to assist in the formulation and introduction of new standards, enabling it to better serve the industry and promote its healthy and sound development.
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