Admix:Conplast WP402

Hydrophobic, pore-blocking, concrete admixture suitable for use in Type B (Integral) watertight concrete construction as defined in BS 8102: 2009 Uses  Production of watertight concrete  Concrete for liquid retaining / excluding structures  Concrete for aggressive exposure classes Advantages  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. 06/4310  Can form partof acompletewaterproofing solution in conjunction with the Fosroc range of membranes and drained cavity systems. Description Conplast WP402 Powder is designed for use as an integral water resisting admixture for ready mixed concrete. It is based on a unique blend of fatty acid salts and hydrophobic materials, supplied as a white chloride-free powder. Conplast WP402 Powder is supplied, per weighed in water soluble bags, for easy dispensing. Standards compliance Conplast WP402 Powder complies with EN934-2 Table 9 as a water resisting admixture. Conplast WP402 is 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. C 0086 Fosroc Limited Drayton Manor Business Park, Coleshill Road,Tamworth,UK. B78 3XN 14 DoP UK9-69 0086-CPR-473151 Conplast WP402 Powder Water Resisting Admixture EN 934-2:T9 Capillary Absorption Fulfilled Compressive Strength Fulfilled Air Content: Fulfilled Corrosion Behaviour Contains components only from EN934-1: Annex A.1. Dangerous Substances NPD Durability NPD Properties Typical properties Appearance: White powder Chloride content: Nil to BS 5075 Na2 O equivalent <0.1% Capillary Absorption to EN 480-5 (% by mass of control) Conplast WP402 0%(control) 1% 7 day: 100 22 90 day: 100 33 Compatibility with cements Conplast WP402 Powder is suitable for use with all types of Portland cements and combination materials such as fly ash, PFA, GGBS limestone fines and microsilica. Typical dosage 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. Effects of overdosing An overdose of Conplast WP402 Powder 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. Fosroc® Conplast WP402 Powder constructive solutions 29 March 2017 Fosroc® Conplast WP402 Powder Usage Guidelines The following are guidelines for use of waterproof concrete containing Conplast WP402. These guidelines should be used in conjunction with those stated on the product BBA certificate, 06/4310. 1. The reinforcement design for the concrete structure must be designed to achieve a maximum through section crack width of 0.3mm although where there is evidence of increased risk due to a high or variable water table a through section crack width of 0.2mm may be stipulated. Refer to the guidance in BS EN 1992-3:2006 for further information. 2. The standard minimum sectional thickness is 200mm although a greater minimum thickness may be recommended for specific projects. 3. All standing water must be removed prior to concrete placement. 4. Smooth grout tight formwork should be used for wall construction and floor slabs placed onto either a grout check membrane or smooth concrete blinding. 5. The maximum area for a single concrete pour for a floor area is 400m2 for which the aspect ratio should not exceed 2:1. 6. The maximum aspect ratio for a single wall pour is 3:1 and this should not include more than two corners or changes of direction. 7. All formwork should be left in place for a minimum of 24 hours.Formwork shouldnotberemoveduntiltheconcrete has sufficiently hardened in order that it can carry safely its own weight and any loads to which it is subjected. Followingshutterstrikeexposedconcretesurfaces(floor& wall) should be cured for up to 28 days with polyethylene sheet, wet hessian or Concure WB. 8. Anintegral kickerofbetween150mmand250mminheight should be formed with the base slab where watertight retaining walls are to be constructed. Kicker strips are completely unsuitable for watertight concrete construction. Kickerless construction carries an additional risk of water penetration that should be avoided or additional protective measures applied to mitigate the increased risk. 9. A 20mm wide x 5mm deep smooth rebate should be formed in the joint face of all construction joints (wall & floor) with at least 80mm concrete cover to an exposed face. Supercast SW20 waterstop should be continuously bonded with Supercast SWX which should be allowed to cure for at least 8 hours prior to concrete pour. The Supercast SW20 must be butt jointed and not overlapped with any gaps filled with Supercast SWX. 10. Movement joints should be waterproofed with Supercast PVC Waterstop, project specific advice and details can be provided upon request. 11. The maximum pourlength for capping beam construction is 10m and should include no more than two corners or changes in direction. Formed joints should be made watertight usingSupercastSW20 bonded withSupercast SWX located a minimum of 80mm inside the externally facingsidesofthejointfollowingtheadvicegiveninitem9. 12. 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. (For project specific advice please contact Fosroc Technical Department) 13. For constructionofdetails suchaspipepenetrations (floor &wall)andsealingtieboltholespleaserefertotherelevant standard detail drawings available from FosrocTechnical Departmentuponrequest.Project specificdetaildrawings can be produced upon receipt of the construction drawings. Instructions for use Mix design Concrete containing Conplast WP402 is normally supplied as ready-mixed concrete by any QSRMC or BSI registered producer.The concrete must have a minimum cement content of 350 kg/m3 , be batched with a maximum water/cement ratio of 0.45 and have a consistency of S2 or greater. However to optimize performance of Conplast WP402, it is recommended that a water/cement ratio of 0.40 or lower is utilised. Trials are recommended to ensure the desired performance characteristics are achieved. 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 complying with BS EN 934-2: 2009, Tables 3.1 and 3.2, to ensure the maximum water/cement ratio of 0.45 is not exceeded. Mixing and Placing ConplastWP402 is added to the mixer at the correct dose prior to batching the concrete constituents. Where a superplasticiser is required, it is mixed in after the addition of Conplast WP402. The resulting concrete should be mixed for a minimum of five minutes to ensure even distribution of Conplast WP402 throughout the concrete. Concrete containing Conplast WP402 should be placed in the same way as normal concrete, in accordance with BS 8000- 2.1: 1990, BS 8000-2.2: 1990, BS EN 13670: 2009 Curing In line with good concrete practice: cure all concrete with Concure WB Clear. (75% curing efficiency) BS 7542. Estimating Packaging Conplast WP402 Powder is available in tubs containing 6 x 1.95 kg units. 29 March 2017 constructive solutions Page 3 Fosroc Limited Drayton Manor Business Park Coleshill Road, Tamworth, Staffordshire B78 3XN. UK www.fosroc.com telephone: fax: email: +44 0 (1827) 262222 +44 0 (1827) 262444 enquiryuk@fosroc.com Important note Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions for the Supply of Goods and Services, copies of which may be obtained on request. Whilst Fosroc endeavours to ensure that any advice, recommendation, specification of information it may give is accurate and correct, it cannot, because it has no direct or continuous control over where or how its products are applied, accept any liability either directly or indirectly arising from the use of its products, whether or not in accordance with any advice, specification, recommendation of information given by it. Certificate number FM 610 Fosroc and Conplast are trade marks of Fosroc International Limited Supply Contact local Fosroc Customer Service Department. Limitations Concrete containing Conplast WP402 must be properly compacted, avoiding honeycombing and voids, particularly in areas in the vicinity of joints. Water resisting concrete incorporating Conplast WP402 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 Conplast WP402 without reference to the Fosroc Technical Department. Concrete containing Conplast WP402 can meet the requirements for all grades defined in Table 1 of BS8102, howeverforgrade3(wherecontrolofwater vapouris 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 TypeA(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. 29 March 2017 Fosroc® Conplast WP402 Powder Storage ConplastWP402Powderhasaminimumshelflifeof12months andshould bestored indrywarehouseconditions between5°C to 40°C. If this temperature range is exceeded in any way then advice should be sought from Fosroc Technical Department. Thebagsmustbestoredinsealedtubs topreventwateringress. Precautions Health and safety For further information consult the Product Safety Data Sheet available for this product. Fire Conplast WP402 Powder is non-flammabl