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Sika MonoTop®-620 AE

one component, polymer modified, finishing mortar and Fairing Coat

Sika MonoTop®-620 AE is a polymer modified cementitious mortar containing silica fume for use as a finishing and protective top coat for concrete repair patches. Suitable for use in hot and tropical climatic conditions.

  • Easy to use; mix with water only
  • User friendly application; excellent workability
  • Good mechanical strengths
  • Sprayable by the wet-spray method
  • Non-corrosive
  • Adjustable consistency
  • High bond strength
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Usage

Sika MonoTop®-620 AE can be used as a:
  • Pore sealer / finishing coat on cementitious substrates
  • Thin layer render coat on horizontal and vertical areas in building and civil engineering construction, for external and internal finishing etc.
  • Levelling mortar on uneven substrates, and profiled concrete surfaces.
  • Fine repair mortar to fill honeycombs, pores etc.
  • Repair mortar for repair of small defects on edges and joint sides; to form and finish joints and covings.
 

Advantages

  • Easy to use; mix with water only
  • User friendly application; excellent workability
  • Good mechanical strengths
  • Sprayable by the wet-spray method
  • Non-corrosive
  • Adjustable consistency
  • High bond strength

Packaging

25 kg bag

Colour

Grey powder

Product Details

Product Information

Composition

Polymer containing cementitious mortar with different additives

Shelf life

12 months minimum from date of production if stored properly in original sealed packaging.

Storage conditions

Store in cool and dry conditions in unopened, undamaged and sealed original packaging at temperatures between +10 °C and +40 °C. Protect from direct sunlight, heat and moisture.

Maximum Grain Size

~0.6 mm

 
Technical Information

Compressive Strength

W/P ratio

28 days

0.20

~25 N/mm2

Tensile Strength in Flexure

~5 N/mm2 (28d)

(EN 12190)

Tensile Adhesion Strength

~1.0 N/mm2

(EN 1542)

Application

Application Information

Mixing Ratio

4.75 - 5.00 L of water per 25 kg bag

Fresh Mortar Density

~2.00 kg/l

Layer Thickness

1.5 mm minimum
5 mm maximum

Ambient Air Temperature

+5 °C min. / +40 °C max.

Substrate Temperature

+5 °C min. / +40 °C max.

Pot Life

~60 minutes (23°C)
Consumption

Yield

~14.90 - 15.10 L / 25 kg bag
Application steps

MIXING

Pour clean, cold water in given quantity into the mixing container.
Add powder while mixing continuously using a low speed electric mixer (max. 500 rpm) for a minimum of 3 minutes avoiding entrapping of air.
By adding the powder slowly and in portions, the desired application consistency can be obtained.
Leave material to stand for 5 – 10 minutes then remix the material for 15 seconds - the product is now ready for use.
Do not add extra water or other ingredients after mixing

APPLICATION

Sika MonoTop®-620 AE can be applied by trowel, spatula or the wet spray method.
As soon as the mortar has started to set it can be smoothed by wooden or synthetic float, styrofoam block or sponge.
No additional water must be used as it may lead to surface discoloration.

 

CURING TREATMENT

Where ambient conditions may lead to rapid surface drying, the use of light water fogging for 48 hours or application of a suitable water based curing compound from Sika's range, is recommended.
Do not commence fogging until final set has been reached.

CLEANING OF EQUIPMENT

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

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