DH-400WS is a quality product, which has been developed as a solution to the unfavorable situation in which adhesive property and mechanical strength, the characteristics of the hardened substance, are drastically reduced when the moisture that has remained from the hardening process of epoxy resin causes a serious trouble to the reaction between the main material and the hardening agent. Having an excellent bonding strength with humid or wet part of concrete structure, it enables the sealing without drying the moisture of structure, thus and helping reducing the term of works.

It is designed as a sealing repair product of the cracks without staying power or the joints of concrete structure and plastering mortar. It contributes to the restoration of staying power of the structure by filling (sealing) the large cracks and cut areas with a specially processed epoxy resin of high bonding strength, tensile strength and compression strength. It improves the durability of structures by preventing water leakage from cracks and corrosion of reinforcing bars by the infiltration of harmful gas in the air. Its applications are as follows.

Sealing of cracks of dry/wet concrete structure.

Sealing of gap produced by dry/wet cement plastering mortar and tile etc.

Sealing for grouting reinforcement of aged, weakened parts of dry/wet concrete.

Sealing for grouting repair of cracks on dry/wet concrete molding products.

Sealing of wet area when foam resin in injected.

Pot Life  the period of time during which you can work without a change in viscosity after resin and hardener are mixed.

Tack Free  the state of hardening in which you can lightly touch the mixed resin with your hand, but the hardened material does not stick.

Hardening Time   the time it takes for the mixed resin to be hardened enough to realize about 80% of final mechanical strength.

① Reinjector is a mid-low pressure injecting device, upgraded to improve the effectiveness of grouting for crack repairing by incorporating the merits of the high pressure grouting of packer and the merits of syringe injector.
② Syringe injector is a low-pressure, low-speed grouting device. A syringe injector containing the resin is set on the cracks and the resin is slowly injected with the help of resilience of the rubber band.

All the equipments and tools that are used for this operation should be cleaned when the operation is finished. Detergent such as M.E.K, Acetone, Xylene, Toluene and epoxy thinner should be used when cleaning. If the Foam is smeared on your skin during the performance, wash it immediately with flowing water.

- When you treating medical fluid, make sure you wear protective helmet, goggle clothes and other protective devices.
- If the medical fluid is smeared on your skin, wash it off immediately and clean up with soapy water.
- All the hand tools and equipments that are used for this operation should be cleaned with thinner thoroughly.
- If you are working in sealed room, then make sure to conduct constraint ventilation for clean air.
- If the medical fluid is smeared on your skin and causes skin trouble, then you should go see specialist for prescription.
- If the temperature is below 5℃, then you must artificially raise up the temperature of medical fluid. This way you can get proper Pot Life.
- If the atmosphere temperature is high and the area is humid, Pot Life of medical fluid quickens. On the contrary, Pot Life will slow down in low temperature area.
- Be aware of it before you conduct the operation.

Recommended temperature for storage is 10~25℃ with no moisture. Store it in cool area. Storing period is about 6 months in sealed condition however it can be corrupted according to storing area and conditions. Preferably use it as soon as possible.