Product Data Sheet Show all documents

SikaGrout®-870

(former MFlow 870)

CEMENTITIOUS HIGH STRENGTH NON-SHRINK PRECISION GROUT

SikaGrout® 870 is a non-shrink, natural aggregate precision grout with excellent high early and ultimate strengths. It is specially formulated to provide extended working time even at high ambient temperatures when mixed and placed at any recommended consistency. SikaGrout® 870 is normally placed at a flowable consistency to completely fill voids between 10mm and 100mm. Thicknesses greater than 100mm are possible with the addition of aggregate. 

  • High early strength – Ensures rapid commissioning of new equipment and structures. 
  • High ultimate strength – Ensures permanence of the installation under static and moderate repetitive loads. 
  • Flowable long life grout – Easy to grout intricate spaces normally inaccessible by conventional grouting technique. 
  • Extended working time – Facilitates grouting of large or difficult placements in a single pour, often without the use of a pump. 
  • Dense, non-shrink grout – Hardens free of bleeding, settlement and drying shrinkage, ensuring tight contact with all grouted surfaces. 
  • Easy to use – Requires no special mixing equipment, it can be mixed in a standard concrete mixer or in a pail using a grout stirrer.
  • No added chloride – Does not add to chloride load of structure 
  • Compliance with codes – Meets the nonshrink requirements of ASTM C1090 and CRDC 621, Corps of Engineers Specification for NonShrink Grout; provides complete non shrink performance when tested in accordance with simulated Bedplate Technique; tested to the requirements of AS1478.2 “Methods of sampling and testing admixtures for concrete, mortar and grout”. 
Product Data Sheet Show all documents

Usage

SikaGrout® 870 is used for all precision, nonshrink grouting applications with clearances of 10mm or more, including: 
  • critical equipment baseplates, soleplates &columns; 
  • precast wall panels, beams, columns, structural building members and curtain walls; 
  • patching poured in place concrete structures, 
  • e.g. honeycombing, using preplaced aggregate techniques; 
  • underpinning; 
  • concrete repair applications where a form and pour material is required; 
  • applications requiring high early compressive strengths and high ultimate compressive strengths. 
 

Advantages

  • High early strength – Ensures rapid commissioning of new equipment and structures. 
  • High ultimate strength – Ensures permanence of the installation under static and moderate repetitive loads. 
  • Flowable long life grout – Easy to grout intricate spaces normally inaccessible by conventional grouting technique. 
  • Extended working time – Facilitates grouting of large or difficult placements in a single pour, often without the use of a pump. 
  • Dense, non-shrink grout – Hardens free of bleeding, settlement and drying shrinkage, ensuring tight contact with all grouted surfaces. 
  • Easy to use – Requires no special mixing equipment, it can be mixed in a standard concrete mixer or in a pail using a grout stirrer.
  • No added chloride – Does not add to chloride load of structure 
  • Compliance with codes – Meets the nonshrink requirements of ASTM C1090 and CRDC 621, Corps of Engineers Specification for NonShrink Grout; provides complete non shrink performance when tested in accordance with simulated Bedplate Technique; tested to the requirements of AS1478.2 “Methods of sampling and testing admixtures for concrete, mortar and grout”. 

Packaging

 25kg bag

Product Details

Product Information

Shelf Life

12 months

Storage Conditions

Stored in a cool dry environment. 

Volatile organic compound (VOC) content

6g/L Test method: SCAQMD 304-91 
Technical Information

Compressive Strength

Strength development - Typical rates of strength development under variable conditions are as follows: Effect of consistency on compressive strength (MPa) strength development at 20°C.

Age

Flowable

Plastic

1 day 

30

42

3 days 

50

61

7 days 

65

69

28 days   8094

Test Method: AS1478.2 Appendix A 

Compressive Strength (MPa) effect of temperature on strength development at a flowable consistency 

Age10°C20°C30°C
1 day 

17

30

39

3 days 

45

50

61

7 days

56

65

78

28 days758094

Test Method: AS1478.2 Appendix A 

Tensile Strength in Flexure

Flexural Strength (MPa) - effect of temperature on strength development at a flowable consistency. 

Age 

10°C20°C30°C
1 day3.04.57.5
3days5.06.09.0
7days6.07.29.8
28 days7.88.611.4

Test Method: JIS R 5201 

Tensile Strength

Indirect Tensile Strength (MPa) - effect of temperature on strength development at a flowable consistency

Age10°C20°C30°C
1 day2.22.63.3
3 days2.43.15.0
7 days4.14.55.5
28 days4.86.37.4

Test Method: AS1012.10 

Thermal Resistance

Volume Change – effect of temperature on volume change at a flowable consistency.

Age10°C20°C30°C
1 dayPositivePositivePositive
3 daysPositivePositivePositive
7 daysPositivePositivePositive
28 daysPositivePositivePositive

Test Method: ASTM C1090 (CRD-C621) 

Bleeding

Bleeding, Plastic Density and Setting Time – effect of temperature on plastic properties at a flowable consistency 

Temp.

Bleeding %Plastic Density kg.m³

Setting Time

Initial hours

Setting Time

Final hours

10°C

0

2120

4.6

6.0

20°C

0

2155

4.5

5.2

30°C

0

2245

3.0

4.0

Test Method: Bleeding AS1012.6; Plastic density AS1012.5; Setting time AS1012.18 

Application

Application Information

Flowability

Flow Retention – effect of temperature on flow retention at a flowable consistency 

Age10°C 20°C30°C
Initial 100%100%100%
After 30 minutes75%90%65%
After 1 hour 60%75%60%

Mixing Ratio

Water Demand – Actual water demand will depend on consistency required and temperature (both ambient and grout). As a guide, the following table indicates the approximate quantity of water required to mix a 25kg bag of SikaGrout® 870 to various consistencies. 

 

TemperatureConsistency 

Flowable1Plastic2

20°C

4.2 litres 

3.25 litres 

1AS1478.2 Appendix D, 45-55cm lateral flow in the flow trough. 
2ASTM C230/C230M, 100-120% flow by flow table after 5 drops in 3 s or AS1478.2 Appendix D, 20-30cm lateral flow in the flow trough. 

The performance data is typical and based upon controlled laboratory conditions. Actual performance on the job site may vary from these values based on actual site conditions. Field and laboratory tests should be conducted on the basis of the desired placing consistency rather than strictly on indicated water demand. If the project requires strength tests be made on site do not use cylinder moulds. 
Application steps

NOTES ON INSTALLATION

One 25 kg bag of SikaGrout 870 mixed according to directions will yield the following flowable grouts at 20°C: 

              

                        

Quantity of aggregate   Nil 13 kg25 kg 
Add 4.2 L water 13.0L 18.5L23.1 L

The material requirement at flowable consistency without any aggregate is 18.5 kg/m2 for 10 mm thickness. 

 

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