SikaGrout®-9850

Ultra-high performance cementitious (UHPC), flowable grout with advanced technology for rapid strength development in offshore wind installations

SikaGrout®-9850 is a ready-to-use, silo-based cementitious grout that forms a flowable, cohesive, and impermeable ultra-high performance cementitious (UHPC) grout when mixed with water. SikaGrout®-9850 develops high compressive strength rapidly, even in low temperatures, and is ideal for narrow constrictions and offshore wind foundation systems. With excellent flowability, anti-washout properties, low water permeability, and high resistance to aggressive ions, it also offers structural corrosion protection and flexibility in installation methods.

  • Quick return to service and removal of temporary supports due to high early strength build-up. ≥ 50 MPa @ 24hrs at 20°C.
  • High early strength at low temperatures.
  • No segregation or bleeding to ensure consistent physical performance inside the grouted connection, and to prevent pump blockages.
  • Excellent fatigue resistance
  • No wash-out during below water grouting.
  • Pump able over long distances and large heights.
  • Available as silo material
  • Excellent flowability
  • Shrinkage compensated
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Areas of Application

SikaGrout®-9850 has been especially formulated for large scale, pump applications.
  • Grouting of grouted connections in offshore installations, e.g. foundations of wind turbines or oil & gas installations.
  • Typical applications are pile-sleeve and stab-in-pile grouted connections, clamp repair, leg filling etc…
  • Grouting under very harsh conditions, e.g. offshore pplications or below water grouting, at temperatures as low as 0°C or up to 40°C.
  • All void filling from 25 mm to 700mm thickness where high strength is important.
Contact the Technical Department of your local Sika office regarding any application or dimensions required not mentioned here.  

Advantages

  • Quick return to service and removal of temporary supports due to high early strength build-up. ≥ 50 MPa @ 24hrs at 20°C.
  • High early strength at low temperatures.
  • No segregation or bleeding to ensure consistent physical performance inside the grouted connection, and to prevent pump blockages.
  • Excellent fatigue resistance
  • No wash-out during below water grouting.
  • Pump able over long distances and large heights.
  • Available as silo material
  • Excellent flowability
  • Shrinkage compensated

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

DNV Type Approval Certificate no. TAK00001ZB

 
Product Information

Shelf life

12 months from date of production

Storage conditions

Product must be stored in original, unopened and undamaged sealed packaging in dry conditions away from direct sunlight and heat, within 5 to 40 oC. When stored under extreme low or high temperatures, and high humidity conditions, the shelf life may be reduced.

Density

Temperature

ton/m3

at 20 oC

2.28 - 2.33

at low temperatures < 3 oC

2-25 - 2.28
Technical Information

Compressive strength

Age

N/mm2

1 day

≥ 50

3 days

≥ 70

7 days

≥ 90

28 days

≥ 125

50 mm cubes, at 20 oC

Age

N/mm2

1 day

≥ 50

3 days

≥ 70

7 days

≥ 85

28 days

≥ 120

150 x 300 mm cylinders, at 20 oC

Modulus of elasticity in compression

41.000 N/mm2

(EN 12390-13)

Poisson ratio:

0.20

(ASTM C469)

Flexural-strength

16.5 N/mm2

(EN 1015-11)

Expansion

0.1% (net expansion)

at 56 days

Shear adhesion strength

Age

N/mm2

14 days

40.0

Splitting tensile strength

8.0 N/mm2

(EN 12390-6)

Application

Application Information

Mixing ratio

Approximately 12.4 – 13.6 % water / powder ratio

Layer thickness

25 - 700 mm

Minimum

25 mm (valid for anchor cage grouting)

40 mm (valid for annuluses in tubular / conical grouted connections)

Maximum

700 mm

 

Material temperature

0 °C min. / +40 °C max.

Ambient air temperature

0 °C min. / +40 °C max.

Substrate temperature

0 °C min. / +40 °C max.

Pot Life

2 hours

Flowability

Flow table

at 20 oC

360 - 390 mm

low temperatures < 3 oC

300 - 330 mm

Slump flow

by Abraham cone

≥ 760 mm

Slump flow class

SF3

Setting time

Initial

Final

Temperature

4.5 - 5.5 hours

5 - 6 hours

20 oC
Consumption

Consumption

Approximately 500 liters per ton material
Application steps

NOTES ON INSTALLATION

  • SikaGrout®-9850 has been especially formulated for use in specific applications. As such SikaGrout®-9850 should be installed by experienced fully trained contractors. Full application procedures are available on request.

  • The temperature of walls and spaces where the grout is to be pumped should be between 5ºC and 35ºC for optimum results. If application temperature is outside of above range, contact the Technical Department of your local Sika office for technical support.

  • Sands or other products that could affect the products properties must not be added.

EQUIPMENT

Mixer type

Paddle mixer

Mixing time

Approximately 6 minutes

Application method

One continuous pour

MIXING

SikaGrout®-9850 must be mixed using suitable grout mixing equipment combined with agitator for continuous large volume mixing. Volume capacity of equipment must be applicable to the volume of material being mixed for a continuous operation. Equipment trials must be considered to ensure product can be mixed satisfactory before full project application. Put most of the water required in the mixer and add slowly the grout material. Mix until a homogeneous mortar (3 to 4 minutes), add the remaining water and continue mixing for at least another 2 minutes until the required fluid or flowable consistency is obtained. Mix with potable water only. Do not add more water than the maximum specified.

CLEANING OF EQUIPMENT

Tools and spillages can be cleaned with water while SikaGrout®-9850 is still uncured. Once hardened, the material can only be removed mechanically.