UNI CRYSTALLINE is a surface-applied, integral crystalline waterproofing material, which waterproofs and protects concrete in-depth. It consists of Portland cement, specially treated quartz sand and a compound of active chemicals. UNI CRYSTALLINE needs only to be mixed with water prior to application.
When UNI CRYSTALLINE is applied to a concrete surface, the active chemicals react with moisture and the by-products of cement hydration to cause a catalytic reaction that generates an insoluble, crystalline structure. These crystals fill the pores and minor shrinkage cracks in the concrete to prevent any further water ingress (even under pressure). However, UNI CRYSTALLINEwill still allow the passage of vapor through the structure (i.e. the concrete will be able to “breathe”). Even after the concrete has cured, UNI CRYSTALLINE remains dormant in the concrete and will reactivate in the presence of moisture to seal capillary tracts and hairline cracks.
In addition to waterproofing the structure, UNI CRYSTALLINE protects concrete against seawater, wastewater, aggressive groundwater and many other aggressive chemical solutions. UNI CRYSTALLINE is approved for use in contact with potable water and is therefore suitable for use in water storage tanks, reservoirs, water treatment plants, etc.
UNI CRYSTALLINE Application
CRYSTALLINE WATERPROOFING COATING
- Basement retaining walls
- Parking structures
- Concrete slabs (floor/roof/balcony, etc.)
- Tunnels and subway systems
- Construction joints
- Foundations
- Water retaining structures
- Underground vaults
- Swimming pools
- Sewage and water treatment plants
- Channels
- Reservoirs
- Bridges, dams and roads
UNI CRYSTALLINE Advantages
- Becomes an integral part of the concrete. Can be applied to all structurally sound concrete – new or old.
- Penetrates deeply and seals concrete’s capillary tracts and shrinkage cracks.
- Can be applied from either the positive or negative side.
- Waterproofing and chemical-resistance properties remain intact even if the surface is damaged.
- Completely effective against high hydrostatic pressure.
- More effective overall and less costly than hydrolytic membrane or clay panel systems.
- Easy to apply, labor-cost effective. Increases concrete’s compressive strength.
- Will not come apart at the seams, tear or be punctured.
- Does not require protection during backfilling, placement of steel or wire mesh, and other common procedures.
- Seals hairline and shrinkage cracks up to 1/64” (0.4 mm).
- Resists chemical attack (pH 3-11 constant contact, pH 2-12 intermittent contact) and provides a range of protection from freeze/thaw cycles, aggressive subsoil waters, seawater, carbonates, chlorides, sulfates and nitrates.
- Can be applied to moist or “green” concrete.
- Protects embedded steel (reinforcing steel and wire mesh).
- Non-toxic (NSF 61 certified for potable water applications).
- Zero VOC - UNI CRYSTALLINE powdered products contain zero volatile organic compounds and are safe for
Directions for UNI CRYSTALLINE Use
CRYSTALLINE WATERPROOFING COATING
Surface preparation
All concrete to be treated with UNI CRYSTALLINE must be
clean and have an “open” capillary surface. Remove laitance, dirt, grease,
etc. by means of high pressure water jetting, wet sandblasting or wire
brushing. Faulty concrete in the form of cracks, honeycombing, etc. must be
chased out, treated with UNI CRYSTALLINE and filled flush with Universal
Construction Chemicals. Surfaces must be carefully pre-watered prior to the
UNI CRYSTALLINE application. The concrete surface must be damp but with no
wet sheen on the surface.
Mixing
UNI CRYSTALLINE is mechanically mixed with clean water
to a creamy consistency or resembling thick oil. Mix only as much material
as can be used within
20 minutes and stir mixture frequently. If the mixture starts to set, do
not add more water; simply re-stir to restore workability.
Mixing Ratios:
| Application Method | Vertical Surfaces | Horizontal Surfaces |
|---|---|---|
| Brush | 5 parts UNI CRYSTALLINE to 2 parts water | 3 parts UNI CRYSTALLINE to 1 part water |
| Spray | 5 parts UNI CRYSTALLINE to 2.75-3.25 parts water |
Application
Slurry consistency:
Apply UNI CRYSTALLINE in one or two coats according to specification by masonry brush or appropriate power spray equipment. When two coats are specified, apply the second coat while the first coat is still “green.”Dry powder consistency (for horizontal surface only):
The specified amount of UNI CRYSTALLINE is distributed in powder form through a sieve or a semi-mechanical barrow spreader and troweled into the freshly placed concrete once this has reached initial set.Application rates
Vertical surfaces:
Two coats of UNI CRYSTALLINE at 1.25-1.5 lb/yd² (0.7-0.8 kg/m²) applied by brush or spray. Please contact your our representative for alternative application methods that may be applicable to your project and help to increase production.Horizontal flatwork:
UNI CRYSTALLINE at 2 lb/yd² (1.1 kg/m²) applied in one slurry coat to hardened concrete. Alternatively, UNI CRYSTALLINE can be dry sprinkled at 1.8 lb/yd² (1 kg/m²) and trowel-applied to fresh concrete when it has reached initial set.Construction joints:
UNI CRYSTALLINE at 3 lb/yd² (1.6 kg/m²) applied in slurry or dry powder consistency immediately prior to placing the next lift/bay of concrete.Blinding concrete:
UNI CRYSTALLINE at 2.5 lb/yd² (1.4 kg/m²) applied in slurry or dry powder consistency immediately prior to placing the overlying concrete slab.Post-treatment:
The treated areas should be kept damp for a period of five days and must be protected against direct sun, wind and frost, by covering with polyethylene sheeting, damp burlap or similar.Clean Up
Use water to clean all tools immediately after use.
Special Considerations
- Do not apply UNI CRYSTALLINE at temperatures at or below freezing or to frozen or freezing surfaces.
- UNI CRYSTALLINE cannot be used as an additive to concrete or plasters. UNI CRYSTALLINE ADMIX® should be considered for these applications.
- UNI CRYSTALLINE should not be confused with a coating or membrane.
- UNI CRYSTALLINE is not a decorative material.
Packaging
UNI CRYSTALLINE is available in (25-kg) bas
Storage / Shelf Life
UNI CRYSTALLINE products must be stored dry at a
minimum temperature of 7ºC. Shelf life is one year when stored under proper
conditions.
Technical Services
For more detailed instructions, alternative application
methods, or information concerning the compatibility of the UNI CRYSTALLINE
treatment with other products or technologies, contact Technical
Representative or your local Technical Representative .
Safe Handling Information
UNI CRYSTALLINE contains cement, which is alkaline.
Will irritate eyes and skin and may cause skin sensitization. Wear
appropriate eye, skin and breathing protection when using this product.
Avoid contact with skin and eyes. In case of contact with eyes, rinse
immediately with plenty of water and seek medical advice. For further
information please refer to Safety Data Sheet. KEEP OUT OF REACH OF
CHILDREN.
