• 17.02.2022

Concrete coastal areas  were made by the method of monolithic concreting during construction in the 80s of the last century. An antiseptic board was used to seal the joints of the concrete areas and prevent the soil from leaching out from under the structures.Concrete coastal areas  were made by the method of monolithic concreting during construction in the 80s of the last century. An antiseptic board was used to seal the joints of the concrete areas and prevent the soil from leaching out from under the structures.

Advantages:

• Resistance of the structure to medium and high water pressure.
• Easy to use.
• Durability.
• Low installation cost.
• The ability to perform work in conditions of negative temperatures.
• Plasticity is maintained at subzero temperatures.
• Shape retention when exposed to the sun (does not flow).

As a result of a long service life, the board has become unusable. There was a threat of leaching of the soil and destruction of the shoreline of the reservoir or hydraulic structures. To repair the temperature-sedimentary deformation joints between concrete areas with a width of 25-45 mm and a depth of 100-150 mm, it was not possible to re-use the antiseptic board. This threat still exists today. Therefore, we recommend using Abris S-DB sealants to repair the joints. LLC " ZGM " has developed two technologies for repairing joints, using a compensator and using a seam waterproofing profile.

Fig. 1 General view of the joint in need of repair

Joint repair technology using a seam waterproofing profile

 We suggest using a sealant Abris S-Sh (cord) as a joint filler, which has an increased elongation at break (330%) and frost resistance. To protect the outer part of the joint from mechanical damage (garbage, etc.),  harder material Abris C-DB is used.

Construction of the expansion joint

1. Concrete areas.
2. Abris S-DB.
3. Sealer Abris S-Sh.
4. Rigid base.
5. Mastic under the brush Abris Ru.

Materials and tools

1. 2. Tools for cleaning the seam.
3. Gas burner.
4. Feed roller.
5. Mastic Abris-k (under the brush).
6. Abris S-DB.

Stages of work completion

1. Clean the seam from the old filling to a depth of 60 mm.
2. Clean the end sides of the concrete areas to a «healthy» concrete.
3. If necessary, dry the edges of the seams with a burner.

4. Put the sealant Abris in the seam.

5. Prime the seam

6. Dry the joint after priming with a torch.
7. Heat the profile with a burner and place the sealing material in the seam.

View of the finished seam:

Materials used:

Sealant Abris S-DB

Section: Details
Packaging: corrugated cardboard boxes
TU: 5772-003-43008408-99
Sealant in the form of a self-adhesive part, which is covered on both sides with an anti-adhesive material (internal reinforcement with galvanized steel is possible).

Sealant Abris S-Sh

Section: Cords
Packaging: corrugated cardboard boxes
TU: 5772-003-43008408-99

Sealant in the form of a self-adhesive cord, which is covered with an anti-adhesive material.

Mastic Abris Ru-k

Packaging: metal barrels, cans, plastic buckets
TU: 5775-004-52471462-2003
Bitumen-polymer mastic in the form of a homogeneous paste-like mass, applied with a brush. Black colour.