Sika Grout® 212 
Expanding Cementitious Grout
 
Technical Data Sheet
 
DESCRIPTION
 
Sika Grout 212 is a one component, multi-purpose,freeflowing, expanding,cementitious grout.
 
WHERE TO USE
 
For the structural grouting of:
  • Machine base plates
  • Column base plates
  • Bearing plates
  • Precast wall panels
  • Crane rails
  • Anchor bolts
  • Concrete repairs
where grout consistencies ranging from free flowing to dry packing are required.
 
ADVANTAGES
 
  • One component: just add water
  • Wide range of application consistencies
  • Rapid strength development
  • High ultimate strengths
  • Shrinkage compensated
  • Pumpable
  • Non corrosive and non metallic
  • High resistance to freeze/thaw cycling
 
COVERAGE
 
Consistency Volume Yield per 25 kg bag
Fluid 13,0 litres
Dry Pack 11,7 litres
PACKAGING 
 
25 kg bag.
 
 
 
 
 
 
 
 
 
 
 
 
 
Table2: Water Requirements for SikaGrout 212:
Consistency
Water Requirement per 25 kg bag in litres
Flowable
4.0
Plastic
3.5
Dry Pack
3.0
 
MIXING PROCEDURE
 
After establishing the consistency required, determine the water requirement per 25 kg bag (see Table 2).
Mixing can be achieved either manually or mechanically. Mechanical mixing is preferred for quantities greater than 1 bag. Use either a slow speed drill (set at 400 - 600 rpm) with a clean, rust free, mixing paddle, standard mortar or concrete mixing equipment, or purpose built cement grout mixing equipment.

Add the required amount of water to the mixing vessel and then add Sika Grout 212. Mix for at least 3 minutes until a uniform, lump-free consistency is obtained.
 
APPLICATION
 
Place Sika Grout 212 within 30 minutes of mixing.
 
Under Plate Grouting
 
For “Fluid” and “Flowable” consistencies continuous flow is essential. Ensure that sufficient grout is available to maintain the hydrostatic pressure throughout the grouting operation until the grout level is above the bottom level of the base plate.

For “Plastic” and “Dry Pack” consistencies compact the grout to minimise air entrapment using standard mortar or concrete placement techniques.

Sika Grout 212 can be used to fill voids up to 100 mm in depth. For voids up to 200 mm it is necessary to fill Sika Grout 212 with a suitable well graded aggregate ranging in size from 3 mm up to 15 mm. The quantity of aggregate added should not exceed one (1) part of aggregate to one (1) part of Sika Grout 212 by weight.
 
 
 
N.B.
The expansive properties of Sika Grout 212 will be severely reduced if heat is introduced to the mixed product via warm batching water, hot storage conditions of Sika Grout 212, and high substrate and ambient temperatures.
 
TECHNICAL DATA
Shelf Life 6 Months in original, unopened container.
Storage Conditions Store in a dry area, between 5°C and 25°C. Protect from direct sunlight.
Colour Concrete grey when mixed
Density 2,25 - 2,40 kg/litre depending upon the consistency
(unfilled Sika Grout 212 Property)
Age (days)
Consistency*
Flowable
Plastic
Dry Pack
Compressive Strength N/mm²
1
34
46
54
7
57
62
67
28
66
71
76
Flexural Strength N/mm²
1
5,8
6,8
8,4
7
8,3
9,6
10,3
28
10,2
11,9
12,4
Tensile Strength N/mm²
1
2,6
3,4
3,6
7
4,7
5,3
6,0
28
5,4
6,2
6,9
 
* See Table 2 for Water Requirements.
 
CLEAN UP
 
Remove uncured Sika Grout 212 from tools and equipment with water. Cured material can only be removed mechanically.
 
 
 
 
 
 
 
 
Instructions for Use
 
SURFACE PREPARATION
 
Concrete surfaces must be clean, sound and free from oil, grease, cement laitance and all loosely adhering particles. Metal surfaces (i.e. iron and steel should be free from scale, rust, oil and grease.

All surfaces should be brought to a saturated surface dry condition by presoaking with clean water for several hours before grouting. Remove any excess water just prior to placing the grout.

Bolt holes must be blown clear of dust and other debris, and anchor bolts must be degreased with a suitable solvent such as Kwiklean water soluble solvent based cleaning compound.
(see corresponding Technical Data Sheet).
 
FORMING
 
For “Fluid” and “Flowable” consistencies always ensure that formwork is grout tight and that sufficient hydrostatic head (see Table 1) is available to complete the grouting operation in one application. Formwork can be sealed with Sikacryl (see corresponding Technical Data Sheet) as shown in Diagram 1.
 
Table 1: Approximate Maximum Flow Distances for “Flowable”SikaGrout 212:
Width of gap to be grouted in mm
Approximate Flow Distance in cm
5cm head
10cm head
25cm head
20
20
100
150
30
30
150
200
40
60
200
300
50
90
300
350
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sika Grout 212 can only be pumped in the “Fluid” and “Flowable” consistencies.For external applications, protect from rain until initial set has been achieved.
 
Anchor Bolt Grouting
 
The correct quantity of Sika Grout 212 required to completely fill the annular gap between the bolt and the sides of the hole should be determined before installation is attempted. (In most cases, the bolt hole should be no greater than 15 mm larger in diameter than the bolt.)
Place the pre-determined quantity of Sika Grout 212 directly into the bolt hole. Push the anchor bolt into the hole and press it gently to the bottom, displacing the Sika Grout 212 and filling the annulus around the bolt. A slight agitation of the bolt will assist the Sika Grout 212 to fill the annulus evenly. Centre or locate the bolt in the desired position, using shims if necessary, and then leave undisturbed until the Sika Grout 212 has set.

If the Sika Grout 212 does not fill the annular gap evenly during bolt insertion, withdraw the bolt and insert additional Sika Grout 212 and re-insert the bolt. DO not attempt to add additional Sika Grout 212 with the bolt in place.
 
CURING
 
The use of standard concrete curing techniques, such as light water fogging for 72 hours or the application of a suitable water based curing compound is recommended on all exposed surfaces of Sika Grout 212. Do not commence fogging until initial set has been reached.
 
LIMITATIONS
 
Ambient and surface temperatures must be 5°C minimum and up to 35°C maximum during application.
 
Minimum thickness: 10mm
6mm (for anchor bolt grouting)
Maximum thickness: 100 mm (unfilled)
200 mm (filled)
 
 
 
 
 
HEALTH PRECAUTIONS
 
Contains Portland cement and crystalline free silica. Avoid breathing dust. Exercise care, as with handling any chemical construction product.
 
SAFETY PRECAUTION
 
Use adequate ventilation. Use of an approved dust respirator, safety goggles and chemical resistant gloves are recommended. Immediately remove contaminated clothing.
 
FIRST AID
 
Skin Contact: Wash thoroughly with soap and water.
 
Eye Contact: Flush immediately with water for 10 - 15 minutes and contact a physician immediately.
 
Respiratory Problems: Remove affected person to fresh air immediately and contact a physician.
 
Hygiene: Wash hands immediately after use. Wash clothing before re-use.
 
SPILLS
 
Collect in appropriate container. Uncured material may be removed with water.
 
DISPOSAL
 
Dispose of in accordance with local regulations.
 
WARNING
 
KEEP CONTAINER CLOSED WHEN NOT IN USE.
KEEP OUT OF REACH OF CHILDREN.
NOT FOR INTERNAL CONSUMPTION.
 
Contact Sika for further health and safety information.
“The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika’s current knowledge and experience of the products when properly stored, handled and applied under normal conditions within their shelf life. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery which are available on request. Users should always refer to the most recent issue of the Technical Data Sheet for the product concerned, copies of which will be supplied on request, or can be accessed on the internet under www.sika.co.za.”
The Company reserves itself the right to change the formulation of Sika products if so required by new research and development. Rev. 10/2002