Product Data Sheet
Edition KSA Rev 09/12/2013 14:25 Sikacrete® 112
1 1/4 Sikacrete 114 SA
Sikacrete® 112
Free flowing micro-concrete for grouting and repair
Product Description
Sikacrete® 112 one component, free-flowing, high strength, cement based micro-
concrete with a maximum aggregate size of 5 mm. Suitable for use in tropical and hot climatic conditions.
Uses Sikacrete® 112 used for the structural repair of deteriorated concrete.
It is ideal for casting sections or members where the volumes required are too large for conventional grouts, and too small and inaccessible for normal concreting applications.
A typical application is the re-profiling of damaged concrete members, using formwork.
Also suitable for base plate grouting where thickness exceeds 75 mm.
Characteristics / Advantages
One component, requires the addition of water only
Reduced waste and risk of mixing failures
Easy to mix, apply and finish
Economical Excellent adhesion Shrinkage compensated Rapid strength development
Compatible with the properties of typical concrete
Vapour permeable High resistance to freeze/thaw cycling
Tests / Standards Complies to :
ASTM standards C157-99 length change (drying shrinkage)
BS1881 part 121: test for water absorption
ASTM C109 & BS 1881 prt116 - Compressive Strength;
ASTM C348 - Flexural Strength;
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Product Data
Type Mixture of Portland Cement and graded aggregates
Form Grey powder
Packaging 25 kg bag
Storage
Store in a dry area between 5ºC and 35ºC. Protect from direct sunlight
Storage Conditions / Shelf-Life
12 months minimum from production date if stored properly in original unopened packaging
Technical Data
Density at 25oC Approx. 2.4 Kg/Lit
Mixing Ratio 3.7 – 4.0 liter potable water per 25kg bag or 15 -16% water by weight of powder.
Setting Time ~60 mins
Compressive Strength
(BS 1881- 116)
1 day 7 days 28 days
~ 25 - 30 N/mm2 ~ 40 - 45 N/mm
2 > 55 - 60 N/mm
2
Flexural Strength
8-10 N/mm2 (BS 6319-P3)
Bond Strength ~ 3 N/mm2
Thickness per pour
Minimum 50mm
Maximum 300mm
Length Change 28 Days 0.06059 % (ASTM C 157:93) (ASTM C 157:93)
Yield Approx. 11.8 Liter per 25 kg bag
Chloride Diffusion
Absorbed chloride ion =0.006% at 13-25mm depth (AASHTO T259:80 and ASSHTO T260:95)
Resistivity Approximately 8-10 kΩ cm
Modulus of Elasticity Approximately 33,000 N/mm2
(BS 1881 Part 121)
Initial Surface Absorption
10 min =0.01 ml/(m2.sec) (BS 1881 Part 5)
30min= <0.01 ml/(m2.sec)
Coefficient of Thermal Expansion
11x10-6
m/m per C
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System Information
Application Details
Substrate Preparation
Concrete surfaces should be clean, sound and free from oil, grease, organic growth & curing compounds. Mechanically prepare concrete surfaces to remove laitance, curing compounds and other loose materials back to sound concrete, to provide a mechanical key for the subsequent product.
Repairs
For large volume repairs to columns, walls or soffits, mark the extremity of the repair area and saw cut to a minimum depth of 10mm to define the area to be removed. Chip out the area within the saw cut back to sound concrete, to a minimum depth of 10 mm ensuring no feather edges and a good mechanical key for the Sikacrete
®
112
If steel reinforcement is exposed, continue to break out the concrete to at least 15mm behind the bars, and mechanically prepare by grit blasting to remove rust, contamination or other loose material.
Bonding Agent and Steel Protection
For standard concrete repair procedures:
Reinforcing should be treated with a suitable protective coating such as SikaTop® Armatec® 110 EpoCem.
The concrete bond line should receive an application of a suitable bonding agent, such as Sikadur® 32 or SikaTop® Armatec® 110 EpoCem, will improve adhesion
on large areas or where particularly dense concrete substrates are involved.
Surface Preparation for Cathodic Protection:
Apply cementitious slurry to the complete metal surface area. All existing concrete surfaces should be pre soaked for an extended period (minimum 1 hour) and dried out to a saturated surface dry condition immediately prior to the repair application. DO NOT use bonding resins or corrosion inhibitors for concrete or reinforcing priming as it will restrict the performance of the Cathodic Protection systems performance.
Application Instructions
Mixing Accurately measure 3.7-4.0 litres (per 25kg pack powder) of drinking quality water and place 3.0 to 3.5 litres in a suitable empty container with sufficient volume to accommodate the mixed material.
Slowly add the powder to the water and mix continuously for 2-3 minutes using a slow speed drill and clean, rust free, mixing paddle or forced action mixer, until a homogenous consistency is achieved.
Then add the remaining water and mix for an additional 2 minutes.
DO NOT MIX BY HAND OR PART MIX BAGS!
Application Before pouring, let the mixed mortar stand for 2 - 3 minutes after mixing to allow entrapped air to escape. Maintain sufficient hydrostatic head to keep the product flowing. Provide channels for the air to escape while introducing the mortar.
After application of steel reinforcement protection and bonding agent, erect well constructed, watertight formwork, which includes a breather pipe (to eliminate trapped air) and a “letter box” opening in front to facilitate simple introduction of the flowable mortar. Ensure the formwork is coated with a suitable release agent such as Separol to facilitate easy de-moulding.
Sikacrete® 112 may be introduced by tremie or 50mm diameter filling tube
installed into the bottom of the formwork. The flowable mortar is then fed by gravity from an external reservoir through this filling pipe into the repair cavity, which is sealed when repair void is filled completely
The application should be carried out in a continuous operation without breaks therefore please ensure sufficient materials, equipment and labour are available to
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achieve this. If the entire area cannot be finished in one go, we recommend creating day joints to provide a neat edge to work to with the subsequent application. Protect from rain and curing liquids until initial set has been achieved.
Curing Treat exposed surfaces with Antisol-E Curing Compound or use other approved
Curing methods such as polyethylene sheeting or wet hessian. (Do not commence Fogging until final set has been reached).
Cleaning Clean equipment and mixer after application with water. Hardened material can only be removed mechanically.
Remarks Ensure formwork is secure and watertight to prevent movement and leaking During placing and curing. At high temperatures use chilled water for mixing to keep grout temperature below 30°C. In hot weather, base plates and Foundations must be shaded from direct sunlight. Condition bags prior to use. For additional information on SikaCrete 112 or other repair materials
contact our Technical Services Department
Value Base All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.
Local Restrictions Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields.
Health and Safety Information
For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.
Ecology Do not dispose of into water or soil but according to local regulations.
Toxicity Non-toxic under the relevant Gulf health and safety codes
Transportation Non-hazardous.
Legal Notes 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 in accordance with Sika’s recommendations. 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 user of the product must test the product’s suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request
Sika Saudi Arabia P.O. Box-58647, 11583 Riyadh Kingdom of Saudi Arabia Tel: +9661-217 6532 Fax: +966 1 4193607 [email protected]
Web: www.sika.com.sa
Sika Gulf B.S.C.(c) P O Box15776, Adliya, Kingdom of Bahrain Tel: +973 17735 560 Fax: +973 17732 476 E Mail: [email protected]
Web:www.sikagulf.com
Sika U.A.E.L.L.C., P.O.Box 126212, Dubai, United Arab Emirates Tel: +971 4439 8200 Fax: +971 4439 3606 [email protected]
Web: www.sika.ae
