Sika MonoTop®-4012

• Contributes towards satisfying Materials and Resources (MR) Credit: Building product disclosure and optimization — Environmental Product Declarations under LEED® v4 — 1 point.

• Contributes towards satisfying Materials and Resources (MR) Credit: Building Product Disclosure and Optimization — Material Ingredients under LEED® v4 — 1 point.

• LEED Attestation, Sika MonoTop-4012, Eurofins, Test Report No. 392-2025-00352803_H_EN.

• Specific Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by BRE Global.

• Bewertungsbestätigung, Sika MonoTop-4012, ecobau.

• eurofins VOC Emission Indoor Air Comfort Sika MonoTop-4012.

• CE marking and declaration of performance based on EN 1504-3: Products and systems for the protection and repair of concrete structures — Structural and non-structural repair.

• Klassifizierung / Classification Brandverhalten / Reaction to fire EN 13501-1.

• Specific electrical resistivity DIN EN ISO 12696, Sika MonoTop®-4012, OST.

• Tensile bond strength after vibrational stress DAfStb guideline, Sika MonoTop-4012, Kiwa, Test report No. P 11864-1-E.

• Sulphate Resistance ÖNORM B 3309-1, Sika MonoTop-4012, HARTL, No. 013108/2.

• Sewage Network Test Report DIN 52108, LPM, No. A-49 ́492-6.1E.

• Resistance to alkali aggregate reaction SIA 262/1, Sika MonoTop®-4012, TFB, Test Report No. 232336-01K.

• Physical test of the frost deicing salt resistance BE II FT, VSS 40 464.

• Adhesive tensile strength in overhead application.

• Drinking Water Certificate: Water Regulations Advisory Scheme Ltd (WRAS) Approval Number: 2305560.

Sulphate-resistant cement, supplementary cement replacement, selected aggregates and additives

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +35 °C. Protect the Product from direct sunlight. Always refer to the packaging.

Refer to the current Safety Data Sheet for information on safe handling and storage.

D_max: 2 mm

3.75 to 3.9 L of water for a 25 kg bag

Pot life depends on temperature.

NOTE: Pot life will be shorter at higher temperatures. Pot life will be longer at lower temperatures.

~1.9 kg powder per m² per 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 the Product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

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 the Product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

• Avoid application in direct sun and / or strong winds.
• Do not add water over recommended dosage.
• Apply only to stable, prepared substrates.
• Do not add additional water during the surface finishing as this can cause discolouration and / or cracking.
• Protect freshly applied material from freezing.
• Do not 'feather edge'.

Select the most appropriate equipment required for the project.

SUBSTRATE PREPARATION EQUIPMENT

• Mechanical handheld tools for spot repairs.

• High- or ultra-high-pressure water blasting equipment.

• Industrial vacuuming equipment.

STEEL REINFORCEMENT EQUIPMENT

• Abrasive blast cleaning equipment.

• High-pressure water blasting equipment.

MIXING EQUIPMENT

• Clean mixing containers.

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

• For large quantities: forced-action mixer.

APPLICATION EQUIPMENT

• Hand-applied: plasterer's hawk, trowel.

• Wet spray: all-in-one mixing and spraying machine, or separate spraying machine and all associated ancillary equipment to suit application volumes. Suitable machines include the PFT N2V, Putzmeister S 5, Wagner PC15, and Inotec inoBEAM F50.

FINISHING EQUIPMENT

• Trowel (PVC or wooden).

• Sponge.

CURING EQUIPMENT

• Polyethylene sheeting.

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

CONCRETE

1. Clean the substrate thoroughly so it is free from dust, loose material, surface contamination and material which reduces adhesion, prevents suction or wetting by the repair materials.
2. Remove delaminated, weak, damaged and deteriorated concrete, and, where necessary, sound concrete. Remove using mechanical handheld tools, high or ultra-high-pressure water blasting equipment.
3. Remove sufficient concrete from around corroded reinforcement to allow cleaning, application of a corrosion protection coating (where required) and compaction of the concrete repair mortar.
4. Prepare repair surface areas in simple square or rectangular layouts to avoid shrinkage stress concentrations and cracking while the repair material cures. This can also avoid structural stress concentrations from thermal movement and loading during the service life.

STEEL REINFORCEMENT

1. Remove rust, scale, mortar, concrete, dust and other loose and deleterious material which reduces bond or contributes to corrosion.
2. Prepare surfaces to bright steel, Sa 2 (ISO 8501-1), using abrasive blast cleaning or high-pressure water blasting equipment. Ensure the back of the rebar is also clean.

PRE-WETTING

Sufficient saturation of the concrete substrate prior to application enables the mortar to gain its full mechanical properties.

1. Thoroughly pre-wet the prepared concrete substrate for a minimum of 2 hours before application.
2. Keep the surface wet and do not allow to dry.
3. The final pre-wetted surface must achieve a dark matt appearance without standing water (i.e. saturated surface dry).

1. Pour the minimum specified quantity of clean, potable water into the clean mixing vessel.
2. Gradually add the powder to the water while stirring slowly.
3. Mix for at least for 3 minutes until a uniform, lump-free consistency is achieved.
4. If necessary, add small amounts of water, within the allowed range, to adjust consistency. NOTE: Do NOT exceed the maximum water content.
5. Check the consistency after every mix.

IMPORTANT

Strictly follow installation procedures

Strictly follow installation procedures as defined in Method Statements, Application Manuals and Working Instructions which must always be adjusted to the actual site conditions.

ON-SITE CONDITIONS

• In draughty areas, open spaces, at temperatures less than +10 °C, or in very dry climates, early plastic shrinkage cracks may occur due to rapid moisture loss. Confirm substrate moisture content, product, substrate and air temperatures prior to application.

• In hot weather, store bags in a cool environment and use cold mixing water to assist with controlling the exothermic reaction.

• In cold weather, store bags in a warm environment and use warm mixing water to assist with achieving strength gain.

REINFORCEMENT CORROSION PROTECTION COATING

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

1. Remove excess water from within the surface pores and cavities with a clean sponge.
2. If no bonding primer was applied, scrape a thin layer of Sika MonoTop®-4012 over the complete substrate surface to fill surface pores or cavities (this is referred to as a 'Scratch Coat'). 
3. Apply Sika MonoTop®-4012 wet-on-wet, without forming voids, and observing the minimum and maximum layer thicknesses.
4. Allow each layer to slightly harden and remain wet before applying subsequent layers.

REPAIR MORTAR – WET SPRAY APPLICATION

1. Remove excess water from within the surface pores and cavities with a clean sponge.
2. Place the mixed Sika MonoTop®-4012 into the spraying equipment.
3. Spray Sika MonoTop®-4012 onto the pre-wetted substrate between the minimum and maximum layer thicknesses without the formation of voids.
4. Allow each layer to slightly harden and remain wet before applying subsequent layers.

SURFACE FINISHING BY HAND

1. Allow the mortar to surface harden.
2. Surface finish to the required surface texture using a stainless steel, steel, PVC or wooden float. Do NOT add water.

• Cure immediately after finishing using an appropriate curing method, such as curing compound, moist geotextile membrane or polythene sheet.

• Do not use curing compounds if they could adversely affect subsequently applied products and systems.

• Protect from wind, rain, frost, and direct sunlight during curing.

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