BETEC® 150 HS

Product description

BETEC® 150 HS is a C₃A-free, cement based, volume stable high sulphate resistant micro-concrete with low initial and high final strength development.
BETEC® 150 HS stands out by controlled volume expansion and offers maximum durability and applicability.

Advantages

• Balanced strength development for durable and reliable structural connections, statically and dynamically load bearing.
• Compressive strength class C55/67 with modulus of elasticity ca. 31,000 MPa
• Freeze/ thaw resistant according to CDF-method (exposure class XF4).
• Compact mortar matrix due to self-compacting and controlled volume expansion.
• Penetration depth of water under pressure < 1 mm according to EN 12390-8.
• Declaration of performance according to EN 1504 part 3
• Declaration of performance according to EN 1504 part 6

Certificates

• Declaration of performance according to EN 1504 part 3 / System 2+
• Declaration of performance according to EN 1504 part 6 / System 2+

Areas of Application

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

• Grouting of machine foundation, in sewage treatment facilities.
• Grouting of bridge bearings and bridge support structure
• Grouting of machines and industrial equipment
• Grouting of rails and sleepers.
• Grouting of bucket foundations.
• Grouting of pipe penetrations and lead-in areas in water and sewage treatment facilities.

Product Properties

Technical Data/Properties(*)

_{^{(1) Typical values in production control. All tests were executed under a conditioned temperature of 21°C and 65% RH.
(2) The illustrated compressive strengths are measured with 100x100x100 mm³ cubes.
(3) At +5 °C material and surrounding temperatures the micro-concrete achieves ~9 MPa after 46 hours.
(4) According to EN 206-1:2001
(5) According to EN 12390-8.}}

Application

1. Preparation of Substrate

• Substrate preparation has to be according EN 1504-10 part 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 ex-posed, 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 MPa.

2. Mixing

• The product has to be mixed using a suitable forced action mixer (400-600 rpm). The mixing head must be completely immersed in the powder.
• Add 4/5 of the required quantity of water into the mixer and mix for 2 minutes. Add the remaining quantity of water. The water content can be varied to obtain the desired consistency. Never use more than the maximum water quantity. Mix for an additional 2 minutes until a lump-free, homogeneous mixture is obtained.
• The mixing time depends on the type of mixer. 4 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 EN 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 sur-faces 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 intro-duce 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 48hours.
• 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.

6. Special remarks

• Cementitious materials can lead to incompatibilities under certain conditions in combination with non-ferrous 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® 150 HS 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.