Quick Links - Click To Jump To Section:

   
• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

• Reduces porosity
• Reduces permeability
• Reduces diffusion coefficient
• Increases water resistance and corrosion resistance
• Chloride free. Ideal for concrete containing embedded steel
• Pre-bagged powder for easy dispensing
• Easily dispersed throughout concrete mix
• BBA accredited, certificate no. 08/4614
• Complies with EN934-2 Table 9 as a water resisting admixture
• Permitted for contact with public water supply under DWI’s ‘List of Approved Products For Use In Public Water Supply In The United Kingdom (May 2015); 2.4 List of Authorised Cement Admixture Components’
• Please refer to the Product Data Sheet for full details of:
  • Properties
  • Standards Compliance
  • Usage Guidlines
  • Application Instructions
  • Storage
  • Health and Safety

Uses

• Production of watertight concrete
• Concrete for liquid retaining / excluding structures
• Concrete for aggressive exposure classes
• Can form part of a complete waterproofing solution in conjunction with the Fosroc range of membranes and drained cavity systems
• Suitable for use with all types of Portland cements and combination materials such as fly ash, PFA, GGBS limestone fines and microsilica

Application Notes

• Typical dosage is 1 bag per cubic metre of concrete Where cement replacement materials are used in the concrete mix, the admixture dosage should be calculated on the total cementitious material content
• The concrete must have a minimum cement content of 350kg/m³, be batched with a maximum water/ cement ratio of 0.45 and have a consistency of S2 or greater
• Once the fresh concrete is mixed, further materials must not be added. The consistency of the concrete can be adjusted using a suitable water-reducing or superplasticising admixture
• Formed joints should be made watertight using Supercast SW20 bonded with Supercast SWX
• Where practicable accessible and maintainable external drainage measures should be installed to alleviate any water pressure that could form against the structure in accordance with the recommendations given in BS8102:2009 incorporating a geo-composite drainage sheet such as Proofex Sheetdrain 80 and a perforated land drain located below finished base slab level
• In line with good concrete practice: cure all concrete with Concure WB Clear
• Available in tubs containing 6 x 1.95 kg units

Limitations

• Concrete containing the product must be properly compacted, avoiding honeycombing and voids, particularly in areas in the vicinity of joints
• Water resisting concrete incorporating the product must be designed to avoid crack width formation in excess of that stipulated in the guidelines above and in BS EN 1992-3:2006
• Joint designs other than those stipulated in the guidelines above should not be used with water resisting concrete incorporating the product
• Concrete containing the product can meet the requirements for all grades defined in Table 1 of BS8102, however for grade 3 (where control of water vapour is required) it will be necessary to provide a mix with a sufficiently low vapour permeability in combination with an adequate section thickness (see guidelines above). Consideration should also be given to its use in conjunction with Type A (Barrier) or Type C (Drained Cavity) where assessed external risks are too high or consequences of failure to achieve the required internal environment are unacceptable
• An overdose of the product may result in an increased plasticising effect. If the water content of the mix is not reduced to allow for this increase, the concrete will become more workable. Water repellency will tend to be increased by overdosage and early strength may tend to be reduced