ZL-L Concrete Crack Repair Adhesive
ZL-L concrete crack repair adhesive is a two-component, modified epoxy resin-based low-viscosity liquid adhesive, conforming to the technical requirements specified in GB50728 "Technical Specification for Safety Assessment of Engineering Structural Reinforcement Materials" and JTG/T J22 "Code for Design of Bridge Reinforcement on Highways."
Category:
Modified epoxy adhesive
Product accessories:
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Product Description
Product Introduction
ZL-L Concrete Crack Repair Adhesive is a two-component, low-viscosity, liquid epoxy-based adhesive, formulated with modified resins. It meets the technical requirements outlined in GB50728 "Technical Specification for Safety Assessment of Engineering Structural Reinforcement Materials" and JTG/T J22 "Code for Design of Bridge Reinforcement on Highways."
Product Advantages
1. Highly penetrative with very low viscosity, capable of flowing into microcracks as narrow as 0.05 mm;
2. Contains no volatile solvents and exhibits minimal shrinkage during the curing process;
3. High bonding strength, with excellent toughness and impact resistance;
4. Exhibits excellent anti-aging properties and resistance to various media (such as acids, bases, salts, and water);
5. Features a wide curing temperature range—curing works effectively even at ambient temperatures above 5°C.
6. The mixing ratio of components A and B is wide, facilitating on-site operation;
7. Long operational life, easy to use, and non-toxic.
Parameter metrics
| Performance |
Trial Project |
Test conditions |
Technical Requirements |
Test results |
| Physical Properties |
Appearance |
Component A |
- |
Liquid with a uniform color and free of impurities. |
| Group B component |
- |
Liquid with a uniform color and free of impurities. |
||
| Initial viscosity after mixing, mPa·s |
A + B |
≤800 |
120 |
|
| Applicable period (operational time), min |
At the applicable temperature |
- |
30-180 |
|
| Colloid Properties |
Compressive strength, MPa |
23±2°C, 7 days |
≥50 |
70 |
| Tensile strength, MPa |
23±2°C, 7 days |
≥25 |
40 |
|
| Flexural strength, MPa |
23±2°C, 7 days |
≥30 |
55 |
|
| Tensile elastic modulus, GPa |
23±2°C, 7 days |
≥1.5 |
2.6 |
|
| Elongation, % |
23±2°C, 7 days |
≥1.7 |
3.5 |
|
| Bonding ability |
Steel-to-steel tensile shear strength, MPa |
23±2°C, 7 days |
≥15 |
22 |
| Tensile strength of steel-to-steel bond, MPa |
23±2°C, 7 days |
≥20 |
33 |
|
| Steel-concrete (dry state) direct tensile bond strength, MPa |
23±2°C, 7 days |
≥2.5 and characterized by cohesive failure within the concrete |
3.8 and characterized by cohesive failure within the concrete |
|
| Steel-concrete (wet state) direct tensile bond strength, MPa |
23±2°C, 7 days |
≥1.8 and characterized by cohesive failure within the concrete |
3.8 and characterized by cohesive failure within the concrete |
|
| Non-volatile content (solid content), % |
105±2°C |
≥99 |
99.5 |
|
| Unconstrained linear shrinkage rate, % |
23±2°C, 7 days |
≤0.3 |
0.20 |
|
| Moisture and Heat Aging Performance Testing |
2160 hours (90 days) |
The aging resistance performance meets the standard technical requirements. |
||
Applicable Conditions
Widely used in crack injection repair for concrete bridges, buildings, hydraulic structures, road surfaces, and other projects; also employed for reinforcing and repairing defects such as honeycomb and porosity within concrete through injection techniques. Additionally applied in fiberglass anti-corrosion systems and as a protective coating for structural surfaces.
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Hunan University Science Park, No. 186 Guyuan Road, Yuelu District, Changsha City, Hunan Province
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