Sika MonoTop® 412 MY (25kg) Repair Mortar
Brand : Sika
Product Type : Structural repair mortar for hand placed / wet spray repair mortar
Size : 25kg bag
Colour : Grey powder
Maximum Grain Size : 2.2mm
Layer Thickness : 6 mm min. / 50 mm max.
Product Description:
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.
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
Features / 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
Shelf Life:
- 6 months from the date of production
Storage:
Store properly in undamaged original sealed packaging, in dry conditions. Protect from moisture and rain.
Application Guide:
- Mixing Ratio : 3.5–4.0 L of water for 25 kg powder
- Fresh Mortar Density : ~2.10 kg/L
- Pot Life : ~30 minutes at +23 °C
Application Steps:
Step 1 : Mixing
- Sika MonoTop®-412 MY can be mixed with a mixing paddle attached to a low speed (< 500 rpm) mechanical mixer or using a force-action mixer, 2 to 3 bags or more at once depending the type and size of mixer.
- In small quantities, Sika MonoTop®-412 MY can also be mixed in a clean container using a small paddle attached to a cordless hand-drill.
- Pour the water in the correct proportion into a clean mixing container. While stirring slowly, add the powder to the water. Mixed thoroughly for a minimum of 3 minutes, until the required consistency.
Step 2 : Application
Sika MonoTop®-412 MY can be applied either manually using traditional techniques or mechanically using wet spray equipment.
Step 3 :
When a bonding primer is required, ensure it is still tacky when the repair material is applied (wet on wet technique). When applied manually, pressed the repair mortar with a trowel, working it well into the substrate.
Step 4 :
Finishing for both hand and machine application can be done with the relevant roughcast as soon as the mortar has started to stiffen.
Step 5 : Curing Treatment
Protect the fresh mortar immediately from early hydration using a curing compound or wet-hessian.
Step 6 : Cleaning of Tools
Clean all tools and application equipment with water immediately after use. Hardened material can only be mechanically removed.
