FEATURES
KÖSTER PSM is a special mineral mortar on polymer- and silicate base with very high resistance to acids. The fully cured mortar possesses a very high compressive strength and is abrasion resistant.
FIELD OF APPLICATION
• Used as a seamless surface protection lining to areas which are exposed to high acidic stresses like effluent treatment tanks, reaction vessels, acid tanks etc.
• Can be used on mineral substrates like concrete, masonry, cementitious plaster and in moist & wet areas.
• Can be used on horizontal and vertical areas
• Used for heavy duty corrosion protection.
TECHNICAL DATA
| Basis |
Powder component |
| |
Polymer component |
| |
Silicate component |
|
| Anorganic cement-free powder mix |
| Pre-polymer |
| Silicate solution |
|
Max. grain size
|
0,4 mm |
PH-value silicate comp.
|
approx. 11 |
Field of application |
pH 0 bis 8
for permanent exposure: max. ph 8 |
Pot life at 15° C
|
30 min |
Density (mixture)
|
1,9 g / cm³ |
Compressive strength (24 h)
|
> 5 N / mm² |
Long tern resistant to |
Damaging salts, oils, fats, acids
(Up to pH 0) |
| Application temperature |
5 ° C – 30 ° C |
SURFACE PREPARATION
The mineral substrate must be dry, level, clean and sound and solid. Substances which inhibit the adhesion such as e. g. bitumen, paint, oil, dust, cement slurry etc. must be removed mechanically. Damaged concrete must be milled down to the sound and solid concrete substrate. Minimum adhesive tensile strength to the substrate must be 1.5 N/mm². Substrates which have previously been damaged by acids must be milled until the undamaged substance of the substrate is reached. For levelling of damaged masonry, KÖSTER Repair Mortar Plus should be used.
APPLICATION
The polymer component and the silicate component are mixed in a clean bucket (which has sufficient volume for the total packaging amount) using a slow rotating mixing device until the mass has a homogeneous consistency.
A homogeneous consistency is reached when the liquid becomes caramel-coloured. Now swiftly mix the powder component into the prepared polymer/silicate mixture while continually operating the mixing device. Attention: Mixing time: 3 minutes. Longer mixing times will reduce the pot life. The material is applied using a spiral pump (e. g. KÖSTER Variojet FU-KB), in a layer thickness of approx. 2 mm per coat. When applying several layers, the application is done fresh in fresh. Maximum time between application of layers is 24 hours. Koster PSM can also be manually applied with a plastering or a standard trowel .
KÖSTER PSM is cement free; DO NOT ADD WATER UNDER ANY CIRCUMSTANCES. Cured material can not be stirred up again. The mortar must be protected for at least 24 hours from contact with moisture and water.
Cleaning of tools : Clean tools immediately after use with water, acetone, n-methylpyrrolidon or with köster kb-pur cleaner.
Safety : Silicates act acidic when coming in contact with skin, eyes or mucous membranes. The polymer component contains iso-cyanites and is hazardous to health. Wear tightly closed protective goggles, solvent-resistant and solvent-proof gloves as well as long sleeved protective work cloth.
Consumption
Approx. 1,9 kg / m² per mm layer thickness
The min. Layer thickness is 2 mm, depending on the substrate higher consumption is possible.
Storage
Store the material in a dry place, in originally sealed packages. the package can be stored approx. 6 month.
Packaging
Powder component : 24 kg bag
Polymer component :1.25 kg cannister
Silicate component : 5.5 kg cannister
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