Sika MonoTop®-723 N

• Meets requirements of EN 1504-3
• AS4020:2005 potable water approved
• QLD TMR approval 2019

5.34 Repair Materials (Concrete)- Mortars

Portland cement, selected aggregates, additives and polymer modified

12 months

Store properly in undamaged original sealed packaging, in dry cool conditions.

d_max: 0.4 mm

Fresh density of mortar ~2.0 kg/l

Sika MonoTop®-723 N is part of the range of Sika mortars complying with the relevant part of European Standard EN 1504 and comprising of:

Class R3

~ 3.6-4.0 litres of water for 20 kg powder

min. 1 mm  / max. 5 mm

+5°C minimum; +35°C maximum

+5°C minimum; +35°C maximum

~40 minutes at 23°C

As a guide, depending on weather conditions overcoat 4 days after application (3 days curing + 1 day drying) with Sikagard® range of protective coatings. For other emulsion paints, refer to the relevant manufacturer’s data sheet/ documentation.

This depends on the substrate roughness and thickness of layer applied. As a guide, ~ 1.7 kg of powder per m² per mm thick

20 kg yields approximately 11.7 litres of mortar

Sika MonoTop®-723 N 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®-723 N can also be manually mixed.
Pour the recommended water in a suitable mixing container. While stirring slowly, add the powder to the water and mix thoroughly at least for 3 minutes to the required consistency.

Sika MonoTop®-723 N can be applied either manually using traditional techniques or mechanically using wet spray equipment. Thoroughly pre-wet the prepared substrate a recommended 2 hours before application. Keep the surface wet and do not allow to dry. Before application remove excess water e.g. with a clean sponge. The surface shall appear a dark matt appearance without glistening and surface pores and pits shall not contain water.

When manually applying the mortar first make a scratch coat by firmly scrapping the repair mortar over the substrate surface to form a thin layer and fill any pores or pits in the surface. The surface can be finished according to the requirements using a float or with a relevant wooden or plastic float or damp sponge.

Protect the fresh mortar immediately from premature drying using an appropriate curing method e.g. moist geotextile membrane, polythene sheet etc.

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