Sika MonoTop®-412 MY

Structural repair mortar for hand placed / wet spray

Sika MonoTop®-412 MY is a single component, fibre reinforced, low shrinkage structural repair mortar. Fast repairs to overhead, horizontal or vertical concrete or mortar surfaces above and below ground level.

  • Superior workability
  • Suitable for hand and machine application
  • Can be applied up to 50 mm thick per application layer

Usage

  • Fast repairs to overhead, horizontal or vertical concrete or mortar surfaces above and below ground level.
  • Suitable for restoration work. Repair of spalling and damaged concrete in buildings, bridges, infrastructure and superstructure works
  • Suitable for structural strengthening. Increasing the bearing capacity of the concrete structure by adding mortar
  • Suitable for preserving or restoring passivity. Increase cover with additional mortar and replace contaminated or carbonated concrete

Packaging

25 kg bag

Advantages

  • Superior workability
  • Suitable for hand and machine application
  • Can be applied up to 50 mm thick per application layer
  • Structural repair
  • Very low shrinkage behaviour
  • Does not require a bonding primer even when manually applied (for static load only)
  • Low permeability

Colour

Grey powder

Product Information

Shelf life

6 months from date of production

Storage conditions

Store properly in undamaged original sealed packaging, in dry conditions. Protect from moisture and rain.

Density

Fresh mortar density: ~2.10 kg/l

Maximum Grain Size

2.2 mm

Soluble Chloride Ion Content

Test Result

Class R4 requirement

0.011 %

≤ 0.05 %

System information

System Structure

Sika MonoTop®-412 MY complies with the R4 class specifications according to EN 1504-3 that are relevant for tropical countries (tests carried out at 25–30 °C).
Sika MonoTop®-412 MY is part of the range of Sika mortars comprising of:

Bonding primer / Corrosion Protection

Sika MonoTop®-610 MY

Normal use

SikaTop® Armatec® 110 EpoCem®

Demanding requirements

Repair mortar

Sika MonoTop®-412 MY

Structural hand & machine applied repair mortar

Fairing coat

Sika MonoTop®-620 MY

Pore sealer and smoothing mortar

Technical Information

Compressive Strength

1 day

≥ 20 N/mm²

7 days

≥ 40 N/mm²

At 28 days:

Test Result

Class R4 requirement

52 N/mm²

≥ 45 N/mm²

Modulus of Elasticity in Compression

Test Result

Class R4 requirement

24.9 GPa

≥ 20 GPa

Tensile Strength in Flexure

1 day

~4 N/mm²

7 days

~7 N/mm²

28 days

~9 N/mm²

Tensile Adhesion Strength

Test Result

Class R4 requirement

2.8 N/mm²

≥ 2.0 N/mm²

Restrained Shrinkage / Expansion

 

Test Results

Class R4 requirement

Control Value

2.65 N/mm²

≥ 2 N/mm²

Restrained Drying Shrinkage

2.38 N/mm²

≥ 2 N/mm²
Restrained Expansion 2.31 N/mm² ≥ 2 N/mm²

Baenziger Block

No cracks with Baenziger Block Test

Thermal Compatibility

 

Test Result

Class R4 requirement

Control Value

2.74 N/mm²

≥ 2 N/mm²

Thunder Shower for 10 cycles

2.19 N/mm²

≥ 2 N/mm²
Thunder Shower for 30 cycles 2.07 N/mm² ≥ 2 N/mm²

Capillary Absorption

Test Result

Class R4 requirement

0.271 kg/m².h0.5

≤ 0.5 kg/m².h0.5

Carbonation Resistance

dkmean for test specimen

dkmean for control specimen

Class R4 requirement
4.35 4.50 dkmean for test specimen < dkmean for control specimen

Sika MonoTop®-412 MY

Technical Data Sheet (TDS)

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