It contributes to crack control and improves the quality of structures with excellent crack-inducing performance.
The "KB Joint," a crack-inducing joint material from Japan, is a joint material that requires no caulking and features high water-stopping ability and excellent workability.
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basic information
Temperature changes due to factors other than external forces, such as the hydration heat of cement and ambient temperature, can cause variations, and when deformation is restrained, cracks may occur. To concentrate such cracks in predetermined locations, a section loss area is created, and cracks are artificially induced, which is known as a crack-inducing joint. The use of specialized hardware, the KB holder, allows each component to be installed in a straight line, minimizing concerns about misalignment and enabling high-precision construction. High-precision construction demonstrates excellent crack-inducing performance, ensuring that cracks reliably occur at the designated locations.
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Delivery Time
P4
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Applications/Examples of results
- Culvert construction - Bridge construction - Retaining wall construction - Port construction - Water treatment facilities - Building construction - Other concrete structure construction
Line up（4）
| Model number | overview |
|---|---|
| A Type | Optimal induced joint for structures requiring water resistance, with no leakage even at a water pressure of 0.5MPa. |
| S Type | Ideal for crack prevention in rigid protective fences and ground covers! A compact induced joint that achieves excellent workability. |
| J Type | An induced joint with excellent workability and water resistance, featuring a slide-type fitting that can securely fix the KB joint and guiding plate together. |
| AR Type | Perfect for crack prevention in architectural structures! An induced joint that achieves high water resistance and workability while keeping the component height low. |
catalog（3）
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Company information
Development, design, manufacturing, sales, and rental of temporary construction materials / First-class architectural office for construction materials, civil engineering materials, scaffolding-related products, formwork-related products, safety equipment, various prefabricated products, and special fabricated hardware, as well as general development, design, manufacturing, sales, and rental of temporary construction materials. Covers a wide range from the development, design, guidance, to construction of various construction methods.