Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
Reinforcement corrosion protection coating
Where a reinforcement coating is required, apply to the whole exposed circumference Sika Emaco®-8100 AP or SikaTop® Armatec® 110 EpoCem® (Refer to respective Product Data Sheet).
Bonding primer
On a well prepared and roughened substrate or for a sprayed application, a bonding primer is generally not required. When a bonding primer is required to achieve the required adhesion values, use Sika Emaco® P 5000 AP or SikaTop® Armatec® 110 EpoCem® (Refer to respective Product Data Sheet). Apply repair mortar onto bonding primer “wet on wet”.
Repair Mortar
Hand application
Thoroughly pre-wet the prepared substrate (2 hours recommended) 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 must appear a dark matt appearance without shining and surface pores and cavities must not contain water. When manually applying by hand, first make a scratch coat by firmly scraping the repair mortar over the substrate surface to form a thin layer and fill any pores or cavities in the surface. Ensure the whole surface to be repaired is covered by the scratch coat. The repair mortar must be applied onto the wet scratch coat between the minimum and maximum layer thicknesses without the formation of voids. Where layers are to be built up, to prevent sagging or slumping, each layer should be allowed to harden before applying subsequent layers “wet on wet”.
Sprayed application - Wet Spray
The wet mixed Sika MonoTop®-4012 AE must be placed into the spraying equipment and applied onto the prewetted substrate (pre-wet procedure as hand application) between the minimum and maximum layer thicknesses without the formation of voids. Where layers are to be built up, to prevent sagging or slumping, each layer must be allowed to harden before applying subsequent layers “wet on wet”.
Surface finishing
Finishing for all types of application must be carried out to the required surface texture using suitable finishing tools as soon as the mortar has started to harden.
Cold weather working
Consider storing bags in a warm environment and using warm water to assist with achieving strength gain and maintaining physical properties.
Hot weather working
Consider storing bags in a cool environment and using chilled water (e.g. with ice) to assist with controlling the exothermic reaction to reduce cracking and maintaining physical properties.
