Sika MonoTop®-4012 ZA

12 months from date of production

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +35 °C. Always refer to packaging.

D_max: 2 mm

3,75 to 3,9 L of water for a 25 kg bag

~2.17 kg/L

~60 minutes at +20 °C

~1.9 kg/m²/mm

Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

25 kg of powder yields ~13.7 L of mortar

Select the most appropriate equipment required for the project:

SUBSTRATE PREPARATION EQUIPMENT

• Mechanical hand-held tools

• High or ultra-high pressure water blasting equipment

STEEL REINFORCEMENT EQUIPMENT

• Abrasive blast cleaning equipment

• High pressure water blasting equipment

MIXING EQUIPMENT

• Clean mixing containers

• Small quantities: low speed electric single or double paddle mixer (< 500 rpm).

• Large quantities: Forced action mixer

APPLICATION EQUIPMENT

• Hand applied: Plasterers hawk, trowel

• Wet Spray: All in one mixing and spraying machine or separate spraying machine and all associated ancillary equipment to suit application volumes

FINISHING EQUIPMENT

• Trowel (PVC or wooden)

• Sponge

Also refer to Site Handbook ‘Repair of Concrete Structures – Patch Repair and Spray Applications’

HAND APPLIED AND WET SPRAY APPLICATION

1. Pour the minimum amount of water into a suitable clean mixing container or equipment.
2. Gradually add the powder to the water while stirring slowly.
3. Mix thoroughly for at least for 3 minutes, add additional water if necessary. Note: Do not add more water than the maximum specified amount.
4. Adjust to the required consistency to achieve a smooth consistent mix.
5. Check the consistency after every mix.

IMPORTANT

Protect from frost

Protect freshly applied material from freezing and frost to prevent cracking.

IMPORTANT

Application in the direct sun or strong winds

Avoid application in direct sun, strong winds or both to reduce the risk of the Product cracking.

REINFORCEMENT CORROSION PROTECTION COATING

1. Where a reinforcement coating is required, apply to the whole exposed circumference Sika MonoTop®-1010 or SikaTop® Armatec®-110 EpoCem®. Refer to the individual Product Data Sheets.

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 MonoTop®-1010 or SikaTop® Armatec®-110 EpoCem®. Refer to the individual Product Data Sheets.

REPAIR MORTAR MANUAL APPLICATION

IMPORTANT

Substrate pre-wetting

Insufficient substrate saturation prior to application will cause the mortar to not gain it's full mechanical properties.

1. Only apply the Product to stable, prepared substrates.
2. Thoroughly pre-wet the prepared substrate for a minimum of 2 hours before application.
3. Keep the surface wet and do not allow to dry.
4. The final pre-wetted surface must achieve a dark matt appearance (saturated surface dry).

IMPORTANT

Sagging or slumping of built up layers

Allow each layer to slightly harden and remain wet before applying subsequent layers.

1. Remove excess water from within the surface pores and cavities with a clean sponge.
2. Make a scratch coat using the repair mortar.
3. Apply the scratch coat over the complete substrate surface to form a thin layer to fill surface pores or cavities.
4. IMPORTANT Do not apply as a "feather edge".Apply the repair mortar onto the scratch coat ‘wet on wet’ between the minimum and maximum layer thicknesses without the formation of voids.

REPAIR MORTAR SPRAYED APPLICATION - WET SPRAY

IMPORTANT

Substrate pre-wetting

Insufficient substrate saturation prior to application will cause the mortar to not gain it's full mechanical properties.

1. Only apply the Product to stable, prepared substrates.
2. Thoroughly pre-wet the prepared substrate for a minimum of 2 hours before application.
3. Keep the surface wet and do not allow to dry.
4. The final pre-wetted surface must achieve a dark matt appearance (saturated surface dry).

IMPORTANT

Sagging or slumping of built up layers

Allow each layer to slightly harden and remain wet before applying subsequent layers.

1. Remove excess water from within the surface pores and cavities with a clean sponge.
2. Place the wet mixed repair mortar into the spraying equipment.
3. Spray the repair mortar onto the pre-wetted substrate between the minimum and maximum layer thicknesses without the formation of voids.

SURFACE FINISHING

IMPORTANT

Adding water during surface finishing

Do not add water during the surface finishing as this can cause discolouration and cracking.

1. Allow mortar to surface harden.
2. Surface finish to the required surface texture using a stainless steel, steel, PVC or wooden float.

COLD WEATHER WORKING

Store bags in a warm environment and using warm water to assist with achieving strength gain and maintaining physical properties.

HOT WEATHER WORKING

Store bags in a cool environment and using cold water to assist with controlling the exothermic reaction to reduce cracking and maintaining physical properties.

• Protect fresh mortar immediately from premature drying using an appropriate curing method, such as curing compound, moist geotextile membrane or polythene sheet.

• Curing compounds must not be used when they could adversely affect subsequently applied products and systems.

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