BETEC® Wind V

Product description

BETEC® Wind V is a cement based, shrink-compensated grout with high initial and final strength development, superior applicability, and high load bearing surface, suitable for all grouting works in the safest, most targeted and productive way.

Advantages

• High early- and final strength properties to strength class C60/75 for structural connections, static and dynamic load bearing.
• High load bearing surface for long-term maintenance free construction of foundations.
• Extended open times and exceptional rheology for a fast, easy and cost effective application by pumping or pouring.
• Self-compacting and controlled volume expansion.
• Certified according DAfStb guideline and CE marked according to EN 1504-6 and BS-EN 1504-6.

Certificates

• Certificate of compliance according to DAfStbguideline. „Production and application of cement-based grouting concrete and mortars“(edition November 2011).
• CE certified according to EN 1504-6 and BS EN 1504-6 / System 2

Field of Application

All grouting applications where superior applicability, high performance and durable connections are required:

• Wind turbine assembly and foundation grouting.

Product Properties

Technical Data/Properties ⁽¹⁾

(1) Typical values in production control. All tests were executed under a conditioned temperature of 21°C and 65% RH.
(2) Compressive strengths measurements based on prisms 4x4x16cm
(3) According to EN 206-1:2001 in combination with DIN 1045-2.
(4) Material, water, equipment and environment temperature. Fresh mortar temperature may vary.
(5) At temperature conditions +5 °C (material water, environment) the product achieves a compressive strength of 5 MPa after approx. 24 hours.

Application

1 Preparation of Substrate

• Substrate preparation has to be according EN 1504-10 section 7.
• The substrate has to be free from dirt, grease, laitance, loose concrete, loose particles or layers which could adversely affect adhesion.
• Remove all damaged concrete and prepare substrate by sand or grid blasting, high pressure water jetting, or other methods until base concrete is exposed, offering sufficient roughness (bond) and open pores.
• The substrate must be pre-wetted with clean water until saturated. The substrate should be damp, but without free standing water.
• The substrate must be frost-free and have a cohesion of minimum 1.5 N/mm².

2 Mixing

• The product has to be mixed using a suitable forced action mixer (400-600rpm). The mixing head must be completely immersed in the powder.
• Add the total required quantity of water into the mixer, add the powder and mix for 5 minutes until a lump-free, homogeneous mixture is obtained. Never use more than the maximum water quantity.
• The mixing time depends on the type of mixer. 5 minutes is the minimum.
• The mixture must be allowed to rest to release air entrapped during mixing.
• Once the grout is ready mixed, apply immediately.
  Do not prepare more material than can be used within the open time of the material.
• When the grout starts to set, remix but never add more water.

3 Application

• The material is always poured or pumped from one side or corner in one continuous application. A dense and non-absorbent formwork is necessary. To prevent air entrapment, sufficient ventilation holes must be provided.
• Do not vibrate.
• When grouting large areas, apply the grout by using worm/screw pumps.

4 Curing

• After treatment has to be according EN 13670 in combination with DIN 1045-3.
• In warm or windy conditions protect the applied material from dehydration by mist-spraying with clean water or protective tarpaulins until the initial set has taken place.
• In cold conditions cover with insulated tarpaulin, polystyrene or other insulating material. Protect surfaces against frost and rain until final set has taken place.
• In cold, humid or unventilated areas it can be necessary to allow for a longer curing period, or to introduce forced air movement to avoid condensation. Never use dehumidifiers during the curing period or within 28 days after application.
• Formwork should not be removed for at least 48 hours.
• The after-treatment should be at least 5 days.
• The after-treatment should take place as soon as possible, at the latest when the material surface starts to set.
• As an alternative to the conventional treatment methods, suitable curing agents can be used to prevent rapid water loss.

5 Cleaning and maintenance

• Mixing and application equipment should be cleaned immediately with clean water. Hardened material needs to be removed mechanically.

5 Special remarks

• Cementitious materials can lead to incompatibilities under certain conditions in combination with nonferrous metals (such as aluminium, copper, zinc).
• Low temperatures reduce flow and delay the early strength development. High temperatures accelerate the strength development and decrease the open time of the material.
• Depending on geometry and application thickness, reinforcement steel can be necessary.
• Lateral grouting overhang should be kept as low as possible (approx. 20-50mm)

Health and Safety

BETEC® Wind V is a product based on cement and can therefore cause burns to skin and eyes, which should be protected during use. Wear gloves and protective eye shields. Wearing a dust mask is advised. Treat splashes to eyes and skin immediately with clean water. Consult a doctor when irritation continues. If accidentally ingested, drink water and consult a doctor. Users must comply with all risk and safety phrases. MSDS’s can be obtained from GCP Germany GmbH. GISCODE ZP1.

CE Certificate :

www.gcpat.com

For technical information:
GCP Germany GmbH
Alte Bottroper Straße 64
45356 Essen

T. +49 (0) 201 86147-0
F. +49 (0) 201 86147-59
E. info.betec@gcpat.com