SikaEmaco® S 5400

12 months if stored in the correct storage conditions.

Store at ambient temperatures, out of direct sunlight, in cool, dry warehouse conditions and clear of the ground on pallets protected from rainfall prior to application. Storage temperature should not exceed +30 °C.

1.4 mm

-30 to +80 °C

~2.1 g/cm³

5 to 50 mm

+5 to +30 °C

3.8 to 4.2 litres of water per 25 kg bag

+5 to +30 °C

45 to 60 Minutes (at +21 ± 2 °C and 60 ± 10 % relative humidity). Higher temperatures will reduce these times and lower temperatures will extend them. 

~1,900 kg powder is needed to prepare 1 m³ of fresh mortar.

25 kg powder will yield approximately 13.4 litres of mortar, when mixed with 4 litres of water per 25 kg bag.

Hardness and durability of concrete are increasingly important parameters for the preparation of any works. This is particularly valid for repair and / or protection of concrete formulated according to the most recent concrete technologies. It is therefore recommended to determine a diagnosis in advance, in order to adapt choices and to offer the most suitable products to support these parameters. Consult your local Sika Representative for additional information.

Concrete must be fully cured, clean and sound to ensure good adhesion. All loose traces of concrete or mortar, dust, grease oil, etc., must be removed.

Concrete must have a minimum direct tensile strength (bond strength) of 1.5 N/mm².

Damaged or contaminated concrete should be removed to obtain a keyed surface. Non-impact / vibrating cleaning methods (e.g. shot blasting, sandblasting or high-pressure water jetting) are recommended. Aggregate should be clearly visible on the surface of the concrete structure after surface preparation.

Cut the edges of the repair vertically to a minimum depth of 5 mm.

If reinforcing steel is visible, clean to a minimum grade of Sa 2 according to ISO 8501-1 / ISO 12944-4. Ensure the back of rebars are also clean. Only in case of chloride contamination of the concrete, or when depth of cover is less than 10 mm, should the reinforcement be protected by using SikaEmaco® P 5000 AP.

For hand applications, we advise applying a brushable bonding layer of SikaEmaco® S 5400. For spray applications, it is not necessary to apply a bonding layer.

Open the bags a short time before mixing. Damaged or opened sacks should not be used.

Pour the minimum amount of mixing water into a clean vessel. Only use clean, uncontaminated, potable water.Mixing water needed: 3.8 to 4.2 litres per 25 kg bag, depending upon consistency required.

Add the SikaEmaco® S 5400 powder rapidly and continuously and mix with a suitable paddle attached to a powerful, slow speed electric drill (maximum 400 rpm) for 3 minutes until plastic consistency is achieved without any lumps in the mortar.

Allow the mortar to rest for 2 to 3 minutes and then remix briefly, adjusting the consistency if required.

NOTE: Add water if necessary but never exceed the maximum water demand!

The prepared substrate should be pre-soaked, preferably for 24 hours, but at least 2 hours before applying SikaEmaco® S 5400. The surface must be matt-damp, but without standing water (i.e. saturated surface dry). 

For optimum curing of the product, the temperatures during application of SikaEmaco® S 5400 should be between +5 °C and +30 °C.

In case of hand application, apply a thin scrape or scratch coat, or contact layer. Then apply the mixed SikaEmaco® S 5400 directly 'wet-on-wet' onto the primed surface in the desired thickness between 5 and 50 mm using a screeding beam, trowel or wooden board.

In case of application by spray machine, first spray-apply a thin contact layer, then apply multiple layers of SikaEmaco® S 5400 until the required layer thickness is obtained. Spraying with the necessary pressure will improve the adhesion of SikaEmaco® S 5400.

The surface can be finished with a sponge, wooden float or plastic float when the mortar has initially set (approximately 45 to 60 minutes after the application at +20 °C). At lower temperatures and / or higher humidity, these times will be extended.

Immediately after SikaEmaco® S 5400 is placed, cover all exposed mortar with clean wet hessian and keep moist by covering with polythene between 1 to 7 days, depending on the weather conditions. To maintain effective curing, the use of an approved Sika curing compound is recommended (however, curing compounds shall not be used if subsequently covering or coating as these may impair adhesion). 

Tools and mixer must be cleaned immediately after use with water. Cured material can only be removed mechanically.