Product Data Sheet
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Sika® Patch M MY

High early strength pourable repair mortar

Sika® Patch M MY is a pourable 1-part cementitious mortar for repair situations where high early strength is required.

  • Easy and user friendly application
  • High early strengths
  • Good ultimate strengths
  • Excellent bonding properties
  • Non-corrosive to reinforcement
  • Non-toxic
  • Requires only water for mixing
  • Cracking tendency with Baenziger Block Test is zero cracks
  • Never mix with admixtures, cement or readymix mortars
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Product Data Sheet
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Usage

Fast repair mortar for level and slightly inclined concrete and mortar substrates where a rapid return to service is required.  

Advantages

  • Easy and user friendly application
  • High early strengths
  • Good ultimate strengths
  • Excellent bonding properties
  • Non-corrosive to reinforcement
  • Non-toxic
  • Requires only water for mixing
  • Cracking tendency with Baenziger Block Test is zero cracks
  • Never mix with admixtures, cement or readymix mortars

Packaging

25 kg bag

Colour

Grey powder

Product Details

Product Information

Shelf Life

6 months from the date of production

Storage Conditions

Stored in its original unopened bag in a dry cool place. Protect from direct sunlight, rain, water and moisture.
System information

System Structure

Bond coat

Sikadur®-732

Repair mortar

Sika® Patch M MY
Technical Information

Compressive Strength

After 2 hours

After 4 hours

After 24 hours

After 28 days

Neat

15 N/mm²

30 N/mm²

45 N/mm²

50 N/mm²

+ 15 kg of 0–10 mm chippings

17 N/mm²

30 N/mm²

45 N/mm²

50 N/mm²

+ 20 kg of 0–20 mm aggregates

18 N/mm²

30 N/mm²

45 N/mm²

50 N/mm²

Note: The added aggregates shall be well-graded and pre-wetted to saturated-surface-dry (SSD) condition.

Baenziger Block

No cracks (Curing is done in the outdoor conditions)

Coefficient of Thermal Expansion

Equivalent to concrete

Application

Application Information

Mixing Ratio

3.4–3.6 L of water per 25 kg bag

Fresh Mortar Density

~2.20 kg/l

Layer Thickness

Section thickness 15–30 mm

Use neat Sika® Patch M MY. Saw cut the edge to minimum of 15 mm depth.

Section thickness 30–75 mm

Mix 1 bag of Sika® Patch M MY with 15 kg of graded 10 mm chippings. Saw cut the edge to minimum of 60 mm depth.

Section thickness 75–150 mm

Mix 1 bag of Sika® Patch M MY with 20 kg of graded 20 mm aggregates. Saw cut the edge to minimum of 60 mm depth.

Section thickness above 150 mm

Mix 1 bag of Sika® Patch M MY with 20 kg of graded 20 mm aggregates but ensure operation is conducted in layers not exceeding 150 mm thickness. Saw cut the edge to minimum of 60 mm depth.

Ambient Air Temperature

+15 °C min. / +35 °C max.

Pot Life

20 minutes at 25 °C
Consumption

Consumption

Bonding Bridge (Sikadur®-732)0.3-0.8 kg/m² , depending on substrate condition. Substrates that are extremely rough may require higher consumption.
Neat Mortar1 bag yields ~13 L of fluid mortar that corresponds to 0.65 m² per 20 mm thickness
Mixed with 15 kg of 0–10 mm chippings1 bag yields ~18 L of concrete that corresponds to 0.36 m² per 50 mm thickness
Mixed with 20 kg of 0–20 mm aggregates1 bag yields ~21 L of concrete that corresponds to 0.21 m² per 100 mm thickness

Note: The figures given above do not include wastage.
Application steps

MIXING

In order to reduce the thermal peak, we recommend mixing Sika® Patch M MY with iced-water. Pour required quantity of iced water into suitable mixing vessel. Slowly add powder under constant stirring. To limit entraining of air, mix mechanically for at least 3 minutes with electric slow speed stirrer (500 rpm max.)

Other suitable mixing tools are 1 or 2 armed basket type mixers, forced-action mixers or stand type mixers. Do not use free-fall mixers.

APPLICATION

Immediately pour the mortar onto the bonding bridge (wet-on-wet) and de-air using a spike roller (for neat mixes only).

Compact well. When using chippings or aggregates, vibrate the mix. Ensure the vibrator does not touch the wire netting. Avoid excessive vibration in order to prevent segregation.

Ensure an uninterrupted application.

After compaction and finishing, allow the bleed water to evaporate and, then spray Sika® Antisol®-90 onto the repair area (~0.20 l/m²). Once the Sika® Patch M MY starts to harden, spray Sika® Antisol®-90 to again ensure proper protection.

After the second application of Sika® Antisol®-90, place 50 mm polystyrene board onto the repair area to prevent rapid heat loss. Keep the insulation board in place for as long as practically possible.

Allow the repair mortar to harden for at least 2 hours before any load is applied.

CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use. Hardened or cured material can only be mechanically removed.

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