Civil Engineering and Construction / Boring - Waterproof Materials (Seal Materials)
Summary of uses
KUNISEAL is a waterproof material that takes advantage of the properties of bentonite. (For more details, refer to "What is bentonite?".)
Bentonite is inorganic clay, and continues to produce an excellent waterproof effect semipermanently without degrading.
In placing additional concrete in building or civil engineering works, fine cracks develop due to the cure shrinkage of concrete. Especially, in an underground area, water infiltration from these cracks cannot be avoided. It is KUNISEAL that shuts out such water.
Conventionally, PVC or rubber water stops and waterproof materials have been often used, but KUNISEAL, unique plasticized bentonite, has significantly improved workability, waterproof performance, and durability. KUNISEAL does not require technical skills, and is easy to install, greatly contributing to shorter construction periods and cost reductions.
Since KUNISEAL C-31 was launched, new products have continuously been added to the lineup of the KUNISEAL Series. They have continued advancing as products that expand the market.
Technologies accumulated through the development of KUNISEAL were gathered to develop KUNISHEET, a waterproof sheet. KUNISHEET is a hybrid waterproof sheet made by combining bentonite and special modified asphalt.
It has been attracting attention from various fields as a product that may be able to resolve the difficulty of using waterproof sheets in joints or through holes.
Waterproof mechanism of KUNISEAL
If in contact with infiltrating water, KUNISEAL, whose main component is bentonite, swells and fills fine, uneven cracks in concrete joints. This weather-stripping effect allows it to produce a waterproof effect. The process of swelling following contact with water and drying can be repeated any number of times, which enables the product to retain its waterproof performance semipermanently.
Installation procedure
Dip KUNISEAL in water to dissolve the film
Push KUNISEAL firmly against concrete
Fill a joint with KUNISEAL in such a way as to make a butt joint
It can be installed easily and reliably, and provides high waterproof performance wherever waterproofing is required.
It can be installed in uneven surfaces or vertical surfaces without requiring special treatment.
It can be used anywhere you can reach whether it is between reinforcing bars or a small area.
Product lineup
| Product name | Use | Feature |
|---|---|---|
| KUNISEAL C-31 | Concrete joints | Clay type. Very easy to install and shortens work construction periods. Flexible and free to deform and has the ability to repair itself. |
| KUNISEAL AB-2505 | Concrete joints, Pipe circumference | Tape type made of bentonite and asphalt. The swelling speed can be controlled. Has the ability to repair itself. Has molding stability. |
| KUNISEAL AB-2025Y | Secondary products of concrete | |
| KUNISEAL EXTERNAL BT | Installation external to concrete joints | Can be nailed and shortens work construction periods. The biodegradable film can be easily installed. |
| KUNISEPA | For separators | The self-fusing product can be cut first and then installed later. |
| KUNISEALPATE XL | Gun type for repair use | Fluid waterproof material for repairing areas of indefinite shape |
| KUNISHEET | Waterproof sheet for outer walls | Has the ability to repair itself and suitable for prior installation in underground waterproofing works. |
| KUNISLEEVE TP | Spiral pipes, etc. | Waterproof material of the new type made of bentonite and butyl rubber |
| KUNISTOPPER PH | Waterproof material for scaffolds | Waterproof material for scaffolds that just needs to be put in place |