Product Data Sheet Show all documents

SikaControl®-1200 WT

(former MLife WP 1200)

Crystalline Waterproofing Admixture for Concrete and Mortars

SikaControl®-1200 WT crystalline waterproofing liquid admixture is an integral crystalline capillary waterproofing admixture for concrete. It is designed for use in above- and below-grade applications.
SikaControl®-1200 WT consists of various active, proprietary chemicals. These active chemicals react with the moisture in fresh concrete with the by-products of cement hydration to cause a reaction, which generates an insoluble crystalline deposit throughout the pores and capillary tracts of the concrete. These crystalline hydration products are deposited and fill the pores and hairline cracks, effectively reduce the permeability of concrete, its capillary absorption and penetration of water and other liquids into the concrete. The concrete with SikaControl®-1200 WT reduces water permeability of concrete structures and improves self-healing property in presence of moisture.
Suitable to use in hot and tropical climatic conditions.

  • ​​​Integral addition
  • Reduces concrete permeability
  • Non toxic
  • Becomes an integral part of the concrete
  • Can seal hairline cracks up to 0.5 mm
  • Reduces water penetration under pressure
  • Protects against sewage and industrial wastes
  • Cost efficient compared to traditional methods
 
Product Data Sheet Show all documents

Usage

SikaControl®-1200 WT can be used in all structural concrete that is constantly or intermittently in contact with water such as sea walls, tunnels, basements,
structural and pre-cast concrete. SikaControl®-1200 WT can also be used as crystalline waterproofing admixture for cement mortars and plasters.  
SikaControl®-1200 WT can be used to enhance the waterproofing properties of structures such as:
  • Building basement and foundations
  • Sewage and water treatment plants
  • Dams, canals, tunnels, harbours
  • Tunnel and subway systems
  • Water reservoirs
  • Concrete pipes
  • Parking structures
  • Pre-cast, cast-in-place and shotcrete applications
  • Swimming pools
  • Retaining walls and sea defense walls

Advantages

  • ​​​Integral addition
  • Reduces concrete permeability
  • Non toxic
  • Becomes an integral part of the concrete
  • Can seal hairline cracks up to 0.5 mm
  • Reduces water penetration under pressure
  • Protects against sewage and industrial wastes
  • Cost efficient compared to traditional methods
 

Packaging

200 kg drum and 1,000 kg flowbin

Colour

Clear to cloudy liquid

Product Details

Product Information

Composition

Various active chemicals

Shelf life

6 months from date of production if stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +50°C.

Density

~1.09 kg/l (+25°C)

Total chloride ion content

Nil

(EN 934-2)
Technical Information

Concreting guidance

Points to remember when producing concrete with enhanced waterproofing properties:

  • Ensure water / cement ratio is less than 0.5
  • Addition of superplasticiser from the Sikament®, SikaPlast® or Sika® ViscoCrete® range is advised to achieve minimum water/cement ratio.
  • Good concrete practice as per ACI standards regarding mixing, placing and curing.
  • Use Sika® Antisol® products as a curing agent or apply wet hessian.

Effect on setting

SikaControl®-1200 WT admixture has minor to no effect on concrete setting time within the recommended dosage range. However, it is recommended to test this in case any additives or blended cementitious combinations are used.

Application

Application Information

Dispensing

SikaControl®-1200 WT admixture is batched at the concrete production plant in a manner similar to admixtures. It may be batched in either a central or truck mixer. Follow the procedures outlined in ASTM C94 / C94M, Standard Specification for Ready-Mixed Concrete, for general batching and mixing instructions for concrete if adding to a truck mixer.

Provide at least 5 minutes of mixing after the addition of SikaControl®-1200 WT admixture to ensure through and uniform distribution of the admixture in the concrete mixture.

Compatibility

SikaControl®-1200 WT is suitable for mixes containing all types of cement and supplementary cementitious materials such as Microsilica (Silica Fume), Fly Ash (PFA), GGBS (ground granulated blast furnace slag) and the following Sika products:
SikaPlast®, Sika® ViscoCrete®, Sikament®, Plastiment®, SikaPump®, Sika® FerroGard®, SikaFume®, SikaFiber®, Sika® Aer, Sika® Stabilizer, SikaControl®
We recommend to perform trial mixes to establish the required performance when combining SikaControl®-1200 WT with the above products or other admixtures. Please consult our Sika Technical Department.

 
Consumption

Recommended dosage

1–2.5 % by weight of binder.
Dosage depends on the mix design, raw materials, climatic conditions and concrete requirements.
To ready mix concrete, a typical dosage of 6-7 kg per cubic meter of concrete is recommended. However, the optimum dosage to meet project
requirements must be determined through trial mixes.

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