BETEC® 2500

High performance grout with very high strength class C100/115 and tested fatigue resistance

Product Description

BETEC® 2500 is a custom engineered high performance grout with very high strength class C100/115 and tested fatigue resistance according Model Code 90, Model Code 2010 and Eurocode 2 part 2 (2010) for a most durable grouting of wind turbine foundations and underfilling of heavy machines and bridge beds.


  • High early- and final strength development to strength class C100/115 for the most durable and reliable structural connections, statically and dynamically load bearing.
  • Fatigue resistance and high load bearing surface for long-term maintenance free construction of foundations.
  • Exceptionally stable applicability, extended open time and improved flow properties for easy, fast and cost-effective installation by pumping or pouring.
  • Model Code 90, Model Code 2010 and Eurocode 2 part 2 (2010) are applicable for design calculations.
  • Self-compacting and controlled volume expansion with lowest shrinkage class SKVB 0.
  • Certified according DAfStb guideline and CE
  • performance declaration by EN 1504-6.

Field of Application

BETEC® 2500 is specifically engineered for:

  • Structural connections of onshore wind turbine foundations.
  • Segment assembly for concrete wind towers.
  • Grouting of heavy machinery and industrial equipment.
  • Grouting of bridge bearings and bridge support structures.


  • Certificate of compliance according to DAfStb-guideline. „Production and application of cement-based grouting concrete and mortars“ (edition November 2011).
  • CE performance declaration according to EN 1504-6.

Product Properties

Technical Data/Properties(*)

    BETEC® 2500
Properties Unit Value*
Grain size [mm] 0-5
Application thickness [mm] ≥ 15
Consistency [-] High flowable
Flow class = a [mm] a2 (600 – 690)
Maximum water quantity [l /25 kg] 2.38
Open time [min] ≥ 30
Application temperature (Powder, water and environment) [°C] +5 to +30
Shrinkage class [-] SKVB 0
Expansion [Vol-%] ≥ 0.1
Fresh mortar density [kg/dm3] ≈ 2.3
Yield (25kg bags) [dm3] ≈ 12
Calculation quantity [kg/m3] 2100
Strength development [-] Fast
Early strength class after 24h [-]
≥ 40
Modulus of elasticity [MPa] ≈ 41000
Compressive strength (**)
- 24 hours
- 28 days
≈ 65
≈ 125
Strength class [-] C 100/115
Exposure classes (***) [-] X0, XC1-XC4, XD1-XD3, XS1-XS3, XA1-XA2, XF1-XF3
Moisture classes (***) [-] WO, WF, WA
Fatigue Resistance (****) Fatigue resistance conform Model Code 90, Model Code 2010 and Eurocode 2 (Version 2010).
Shelf life 6 Months
Stored under cover, clear of the ground, protected from all sources of moisture and frost.
Packaging Bags of 25 kg with plastic liner.
40 bags per pallet (1000kg)
Appearance Dark grey  

(*)Typical values in production control. All tests were executed under a conditioned temperature of 21°C and 65% RH.
(**) Compressive strengths measurements based on cubes with length size of 150mm.
(***) According to EN 206-1:2001 in combination with DIN 1045-2.
(****) For detailed information see report A-36/2014-1 from Bergische Universität Wuppental (09. December 2014)


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 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 must be mixed using a suitable forced action mixer (400-600rpm). The mixing head must be completely immersed in the powder.
  • Add 100% of the required quantity of water into the mixer and mix for 5 minutes. The water content can be varied to obtain the desired consistency. Never use more than the maximum water quantity. Mix until a lump-free, homogeneous mixture is obtained.
  • The mixing time depends on the type of mixer 5 minutes is the minimum.
  • 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 13610 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 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 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 & Safety

BETEC® 2500 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 Applied Technologies or from our website. GISCODE ZP1

CE Certificate

GCP Germany GmbH
Pyrmonter Str. 56
D-32676 Lügde
Plant Essen
DOP No.: GCPESS-109296-01
EN 1504-6
Anchoring Product | United Kingdom customer service: +44 (0) 1480 478421

We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.

BETEC is a trademark, which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.

© Copyright 2018 GCP Applied Technologies Inc. All rights reserved.

GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.

In UK, GCP Applied Technologies, 580-581, Ipswich Road, Slough, Berkshire, SL 1 4EQ. EQ.

This document is only current as of the last updated date stated below and is valid only for use in the United Kingdom. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2021-02-05