Sika MonoTop®-412 TH

Sulphate resistant cement, selected aggregates and additives

9 months from the date of production If stored properly in undamaged, original, sealed packaging.

Store in dry and cool conditions, protected from direct sunlight.

~ 1.1 - 1.3 kg/l

D_max: 2.0 mm

~ 2 MPa @ 28 days

~ 3.4 to 3.6 litres of water for 20 kg powder

5 - 35 mm

+10°C min.; +35°C max.

+10°C min.; +35°C max.

1 h @ +25°C

2 h @ +25°C

This depends on the substrate roughness and thickness of layer applied.
As a guide, ~ 2 kg of powder per mm thick per m²

Sika® MonoTop®-412 TH can be mixed with a low speed (< 500 rpm) hand drill mixer or for machine application, using a force action mixer 2 to 3 bags or more at once depending the type and size of mixer. In small quantity, Sika® MonoTop®-412 TH can also be manually mixed.
Pour the water in the correct proportion into a suitable mixing container. While stirring slowly, add the powder to the water. Mixed thoroughly at least for 3 minutes to the required consistency

Bonding primer : On a well prepared and roughened substrate a bonding primer is generally not required. When a bonding primer is not required pre-wet the surface.
The surface shall not be allowed to dry before application of the concrete repair mortar. The surface shall achieve a dark matt appearance without glistening and surface pores and pits shall not contain water.

When a bonding primer is necessary apply the same product – Sika® MonoTop®-412 TH – mixed wetter than normally required, applied well on the substrate with a stiff brush.
The, subsequent application of the repair mortar shall be done wet on wet.

Reinforcement coating : Where a reinforcement coating is required as a barrier (e.g. in case of insufficient concrete cover), apply to the whole exposed circumference two coats of SikaTop® Armatec -110 EpoCem® (Refer to the relevant Product Data Sheet).

Sika® MonoTop®-412 TH can be applied either manually using traditional techniques or mechanically using wet spray equipment.
When a bonding primer is required, ensure it is still tacky when the repair material is pressed on (wet on wet technique). When applied manually, pressed the repair mortar with a trowel, pressing it well on the substrate.
Finishing for both hand and machine application, can be done with the relevant roughcast as soon as the mortar has started to stiffen.

Protect the fresh mortar from early dehydration using the relevant curing method.

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