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Ready-to-use, one-component sealant based on MS Polymer for sealing joints in horizontal structures with direct mechanical load. Can be used for sealing joints in vertical and inclined building structures.
AREAS OF APPLICATION
ADVANTAGES
TECHNICAL SPECIFICATIONS
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Appearance |
White or gray thixotropic mass, other colors on request |
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Type of polymer |
One-component MS Polymer, cold curing under the influence of air moisture |
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Packaging |
Packed in 600 ml laminated plastic tubes. Supplied in cardboard boxes, 15 tubes each. |
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Warranty shelf life |
18 months in unopened, intact original packaging, in dry storage rooms at a temperature not exceeding +30 °C |
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Sealing properties |
Surface film formation ≈20 minutes at 23 °C and 50% relative humidity |
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Shrinking |
≤1% |
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Density |
≈1.5 kg/liter |
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Elasticity |
≥70% (ISO 7389) |
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Strength characteristics GOST 21751-76 (ISO 8339) |
• conditional tensile strength ≥1.8 MPa ≥1.3 MPa • relative elongation at the moment rupture ≥400% ≥200% • modulus of elasticity at 100% elongation from 0.7 to 0.9 MPa ≥0.7 MPa |
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Shore Hardness |
A ≥40 (ISO 868) |
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Application temperature range |
from +1 to +50 °C |
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Operating temperature range |
from – 50 °C to +70 °C |
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Permissible deformation (From nominal size) |
±25% |
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Seam depth |
from 5 to 15 mm |
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Seam width |
from 10 to 30 mm. |
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Seam width to depth ratio |
2:1 |
SEALING OF EXPANSION JOINT
To prevent the formation of a third plane of contact between the sealant and the structural elements of the joint, it is always necessary to use anti-adhesive compounds or sealing gaskets, such as, for example, a polyethylene foam harness.
To limit the depth of the sealant layer, achieve the recommended ratio of width to depth of the sealant, and reduce material consumption, it is recommended to select the size of the sealing gasket taking into account the actual width of the joint.
It is necessary to follow the recommendations for the optimal joint width and depth for this sealant.
Applying sealant with a layer thickness less than the minimum recommended reduces the durability of the seam sealing.
Exceeding the maximum recommended sealant layer thickness causes high internal stresses that contribute to the appearance of cracks.
Narrow joints must be enlarged using special tools to achieve the recommended width and depth.
Treat seams that are too wide, as well as seams with a porous, weak surface, with appropriate repair compounds.
The surface of the joint must be cleaned of all contaminants that reduce the adhesive strength of the sealant to the surface - dust, cement film, cement mortar residues, residues of previously applied sealing material, etc., in winter - snow, frost, ice.
The surfaces are cleaned with metal brushes by hand or with a power tool, then blown with compressed air.
Areas contaminated with oil or grease must be degreased with appropriate solvents in accordance with local regulations.
Fresh concrete substrates must be aged for at least 28 days to reduce the humidity to an acceptable level.
To check the quality of the joint, we recommend preparing a test joint on the construction site. If, despite following the recommendations for surface preparation, the adhesion of the sealant to the surface is unsatisfactory, special surface preparation methods must be used. In this case, contact the manufacturer's representative.
APPLICATION OF SEALANTER
Before applying sealant, be sure to read the relevant safety data sheet and ensure that all manufacturer instructions are followed.
Make sure that the ambient temperature at the sealant application site is within the allowable application temperature range.
Sealant may only be applied to joints that meet the recommended parameters and have been prepared according to the above instructions.
The sealant is applied to the seam by squeezing it using a suitable syringe (gun).
Insert the sealant tube into the syringe barrel, cut off the tip of the tube from the tip (nozzle) side, and close the barrel.
Select and install a tip that matches the size of the seam.
When applying sealant, the tip of the syringe is inserted into the seam being sealed at a 45° angle.
Filling a vertical or slanted seam is done from top to bottom. Horizontal seams are filled in the direction of the hand holding the syringe handle.
Smoothly and evenly squeeze the sealant into the seam, avoiding the formation of cavities and air bubbles, tears and overflows.
At low temperatures, the sealant may have increased viscosity. In case of sealing work at low temperatures, it is recommended to keep the packages with sealant in a warm room for at least 24 hours to facilitate the process of squeezing out of the syringe.
Immediately after filling the joint, it is necessary to level and compact the applied sealant, as well as give it the desired shape with an appropriate tool (spatula) of the appropriate size and configuration.
The tool is moistened in a soap solution to prevent the sealant from sticking. Direct application of soap solution to freshly applied sealant is not allowed.
Tools are cleaned immediately after completion of work with approved solvents (acetone or white spirit is recommended). Excess hardened mastic is removed mechanically.
Freshly applied sealant must be protected from rain for a period of time exceeding the time it takes for the surface film to form.
It is possible to use polyethylene film, tape or other material, but care should be taken to prevent the protective material from sticking to the sealant placed in the seam, and to prevent damage to the adjacent decorative coating.