Product Data Sheet Show all documents

Sikalastic®-152 BH

FIBRE-REINFORCED CEMENTITIOUS MORTAR FOR FLEXIBLE WATERPROOFING AND
CONCRETE PROTECTION

Sikalastic®-152 BH is a two-component, crack-bridging, fibre-reinforced cementitious mortar, with low elastic modulus with special additives for waterproofing and protection of concrete subgrades subject to flexural strain.
Suitable for use in hot and tropical climatic conditions

  • Flexible waterproofing and concrete protection in one product
  • Very good crack-bridging abilities, also at low temperature
  • Resistance against de-icing salts and carbon dioxide
  • Reliable application also in very humid environment
  • All components ready delivered, no additional mixing water required
  • Applicable also on lightly humid subgrades
  • Non sagging: easy application also on vertical walls
  • Excellent adhesion onto lots of substrates such as concrete, cement mortars, stone, masonry
Product Data Sheet Show all documents

Usage

  • Flexible waterproofing and protection of hydraulic structures such as basins, tanks, concrete piping,bridges and canals
  • Waterproofing of bathrooms, shower, terraces, balconies, swimming pools before the application of ceramic tiles bonded with adhesives
  • Waterproofing and protection of outer walls to be buried into the ground
  • Inside waterproofing of light counter pressure water of walls and floors in basements
  • Protective, anti-carbonation coating of concrete surfaces
 

Advantages

  • Flexible waterproofing and concrete protection in one product
  • Very good crack-bridging abilities, also at low temperature
  • Resistance against de-icing salts and carbon dioxide
  • Reliable application also in very humid environment
  • All components ready delivered, no additional mixing water required
  • Applicable also on lightly humid subgrades
  • Non sagging: easy application also on vertical walls
  • Excellent adhesion onto lots of substrates such as concrete, cement mortars, stone, masonry

Packaging

Ready batched 33 kg units:

Comp. A 8 kg
Comp. B 25 kg

Colour

Grey

Product Details

Product Information

Composition

Cement modified with polymers, selected alkali-resistant aggregates, microsilica and fibres.

Shelf life

12 months from date of production

Storage conditions

Store properly in the original packaging, in cool and dry conditions. Protect from water.
System information

System structure

For bonding tiles or equivalent materials directly on Sikalastic®-152 BH, use minimum a SikaCeram® C2 type according to EN 12004 or an adhesive
compatible with Sikalastic®-152 BH. May perform preliminary adhesion tests. The application can take place after the second layer has fully cured.

Application

Application Information

Mixing ratio

Component A : Component B = 8 : 25 (by weight)

Fresh mortar density

~1.7 kg/l

Layer thickness

2 mm with constant thickness, applied in minimum 2 layers (maximum recommended thickness per layer is 2 mm)

Ambient air temperature

+5 °C min. / 40 °C max.

Substrate temperature

+5 °C min. / 40 °C max.

Pot Life

~5 hours (25 °C)

Waiting time to overcoating

Sikalastic®-152 BH must be properly hardened before over coating or contact with water. The following waiting times can be used as a guide:

+30oC

Waiting time between coats~6 - 12 hours

Lining with tiles

~6 - 12 hours

Temporary immersion for watertightness testing~2 days
Permanent immersion in water / fully cured~7 days

Waiting times may vary depending on humidity of environment and substrate.
Consumption

Consumption

This depends on the substrate roughness; as a guide: ~1.7 kg/m2/mm. This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variations in level and wastage etc.
Application steps

MIXING

Sikalastic®-152 BH can be mixed with a low speed
(~500 r.p.m.) electric drill mixer. Shake carefully Comp.
A before using. Then pour ~½ Comp. A into a suitable
mixing container and add Comp. B slowly while mixing.
When homogeneous, add the remaining amount of
Comp. A, and mix thoroughly at least for 3 minutes,
until the proper lump-free consistency is reached.
Do not add any additional water or other ingredients;
each packaging unit must be entirely mixed.

APPLICATION

All connections between the substrate and pipe entries, plant and equipment, light switches etc., must be sealed and watertight. Joints in concrete, pipes, anywhere else in the structure must also be sealed and made watertight. Use coved details at the floor/wall junctions.
Apply Sikalastic®-152 BH by means of a trowel onto the substrate, exerting a good pressure.
Apply the first coat of Sikalastic®-152 BH using a notched (3 x 3 mm) trowel, with firm even pressure onto the substrate in order to achieve a regular, consistent thickness. As soon as the first layer has hardened, apply the second coat of Sikalastic®-152 BH by trowel, taking care to achieve a uniform and continuous layer, which totally covers the first one. In highly stressed areas a special alkali-resistant glass fibre fabric (eg. 150 - 160 g/m²) shall be placed into the first fresh mortar layer. It shall be well trimmed and fully embedded into the mortar avoiding the formation of voids in the coating.
Sikalastic®-152 BH cannot be smoothed using float or sponge trowel. It is possible to smooth the surface as soon as the curing of the product is complete by light abrasion techniques.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water
immediately after use. Hardened material can only be
mechanically removed.

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