SikaGrout®-9970

Advanced, ultra high performance cementitious (UHPC) grout with excellent flowability and suitability for offshore installations

SikaGrout®-9970 is a ready-to-use special cement dry powder that, when mixed with water, produces a flowable, cohesive, and impermeable ultra-high performance cementitious (UHPC) grout with rapid development of high compressive strength. Designed with good flowability, inherent cohesiveness, and anti-washout properties, SikaGrout®-9970 is ideal for narrow constrictions such as annulus filling in pipe-in-pipe systems or hollow sections in offshore structures where extreme loads occur. Advanced nano-engineered binder technology, incorporating Portland, pozzolan, and special cements, ensures superior structural performance. Additionally, SikaGrout®-9970 is chloride-free, shrinkage-compensated, and features low water permeability with high resistance to aggressive ion penetration.  

  • Ultra-high Young’s modulus for exceptional stiffness which is more than twice of concrete and 40% of steel (and similar to metallic gold, silver & aluminum)
  • Ultra-high long-term strength exceeding 200 MPa which is 2.5 times of high-strength concrete (G80)
  • Good flowability
  • High early strength
  • Shrinkage compensated
  • No segregation or bleeding
Contact

Usage

SikaGrout®-9970 has been especially formulated for;
  • Grouted connections for offshore marine infrastructure where extreme loads are transferred over short structural lengths.
Contact the Technical Department of your local Sika office regarding any application required not mentioned here.

Advantages

  • Ultra-high Young’s modulus for exceptional stiffness which is more than twice of concrete and 40% of steel (and similar to metallic gold, silver & aluminum)
  • Ultra-high long-term strength exceeding 200 MPa which is 2.5 times of high-strength concrete (G80)
  • Good flowability
  • High early strength
  • Shrinkage compensated
  • No segregation or bleeding

Packaging

SikaGrout®-9970 is supplied in special 500, 1000 kg watertight big bags

Product Details

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, not exceeding 40 oC. When stored under high temperature and high humidity conditions, the shelf life may be reduced.

Density

2.75 - 2.85 ton/m3

(EN 12390-7)

 
Technical Information

Compressive strength

Age

N/mm2

1 day

> 90

3 days

> 160

7 days

> 180

28 days

> 210

91 days

> 220

at 25 oC

Modulus of elasticity in compression

≥ 76.000 N/mm2

(EN 12390-13)

Poisson's ratio:

0.19

(ASTM C469)

Flexural-strength

> 25.0 N/mm2

(EN 1015-11)

Tensile strength

> 11.0 N/mm2

(ASTM C307)

Shrinkage

at 91 days

< 0.15 ‰

Splitting tensile strength

> 18.0 N/mm2

(EN 12390-6)

Application

Application Information

Mixing ratio

7.0 to 8.2 % water / powder ratio

Layer thickness

40 - 600 mm

Material temperature

+2 °C min. / +35 °C max.

Ambient air temperature

+2 °C min. / +35 °C max.

Substrate temperature

+2 °C min. / +35 °C max.

Pot Life

2 hours

Flowability

Flow table

280 - 315 mm

Flow through

> 550 mm

Setting time

Initial

Final

7 hours

10 hours
Consumption

Consumption

Approximately 390 liters per ton material
Application steps

NOTES ON INSTALLATION

  • SikaGrout®-9970 has been especially formulated for use in specific applications. As such SikaGrout®-9970 should be installed by experienced fully trained contractors.

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

  • SikaGrout®-9970 which will be exposed to strong drying conditions, e.g. mortar which is directly exposed to heavy wind and/or direct sunlight, should be protected using appropriate curing agents.

 

EQUIPMENT

Mixer type

Paddle mixer

Mixing time

Approximately 6 minutes

Application method

One continuous pour

MIXING

SikaGrout®-9970 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®-9970 is still uncured. Once hardened, the material can only be removed mechanically.