SikaEmaco® T 545

12 months after date of production if stored at below mentioned 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. No permanent storage over +30 °C.

Approx. 1.4 mm

¹⁾ Curing, water and powder temperature: +20 °C

²⁾ Curing, water and powder temperature: +5 °C

³⁾ Curing at -10 °C; water temperature +20 °C and powder temperature +10 °C

¹⁾ Curing, water and powder temperature: +20 °C

²⁾ Curing, water and powder temperature: +5 °C

³⁾ Curing at -10 °C; water temperature +20 °C and powder temperature +10 °C

-30 °C to +80 °C

approx. 2.2 kg/l

Do not apply SikaEmaco® T 545 on carbonated concrete surfaces!

10 to 50 mm

-10 °C to +30 °C

1.5 l mixing water / 25 kg bag.

-10 °C to +30 °C

approx. 10 minutes (at +20 °C)

Approx. 2,080 kg powder is needed to prepare 1 m³ of fresh mortar.

One 25 kg bag will yield approximately 11.6 litres of mortar if mixed with 1.5 l of water.

• Do not apply on carbonated concrete surfaces!

• Do not apply SikaEmaco® T 545 at temperatures below -10 °C nor above +30 °C.

• Under no circumstances should either fine aggregates or cement be added to SikaEmaco® T 545.

• Do not use vibrator for placing the mortar.

• Never add water or fresh mortar to a mortar mix which has already begun to set.

• Keep the mixing water ratio between the recommended limits.

• When applying SikaEmaco® T 545 at cold or sub-zero temperatures, we advise to use warm mixing water in order not to delay the hardening of the mortar too much.

• Check if the substrate is enough resistant to osmotic pressure, before SikaEmaco® T 545 is applied.

• When using SikaEmaco® T 545 in large volumes or at high temperatures, a slight smell of ammonia may be observed

• Do not wet cure the material! It must only be protected from rainfall for a period of not less than 30 minutes after placing and finishing.

SikaEmaco® T 545 must not be applied on carbonated concrete surfaces! Check the carbonation depth of the surface first and remove all carbonated concrete prior to application.

The boundaries of the repairs must be saw cut to a minimum depth of 10 mm, as feather edging of the product is not recommended. The substrate must be free of grease, oil, paint, lime, dirt and dust before commencing the application of SikaEmaco® T 545.

Roughen up the surface by means of a scarifier, shot-blasting, or other suitable equipment down to a sound and clean substrate. Remove all rust and other contaminants from reinforcing steel.

To ensure permanent repair on concrete flooring directly in contact with the ground, the presence of a water vapour barrier is recommended. Consult your local Sika representative for further information.

When SikaEmaco® T 545 is added to the water and mixed, an exothermic chemical reaction starts, and a chemical setting process takes place within approximately 10 to 15 minutes (at +20 °C). The material hardens to give sufficient high strength to receive traffic within less than one hour at 15 - 20 °C.

Mix as near as possible to the area of application.

Wet down the mixer and drain off the free water. Pour all the mixing water into the mixer. Add SikaEmaco® T 545 powder to water. Do not add water to powder! When adding coarse aggregate, these must be added to the water before the addition of the powder component of SikaEmaco® T 545 into the mixer. Continue mixing for approximately 2 minutes until a lump-free, homogeneous product is obtained.

Do not re-temper and do not add extra water. The amount to be mixed should never exceed that which can be placed, compacted and finished within the pot life of the material. Longer mixing times is needed when the material is stored at cold temperatures.

Thoroughly wet the substrate to be repaired. Remove excess or standing water, just prior to the application.

Patch the mixed mortar onto the pre-wetted, mat humid (dampened) surface and compact. Avoid layer on layer built-up. Finish with a trowel, or wooden float for better skid resistance. The recommended application thickness is 10 - 50 mm.

For applications over 30 mm, a 4 to 10 mm round aggregate can be added (maximum 8 kg of aggregate per 25kg bag of SikaEmaco® T 545). It is essential that the additional aggregates are clean (organic free), dry and round in shape. It is always advisable to make a field trial when extra aggregate is added.

In cold climates, i.e. below +5°C and down to -10°C, it is recommended not only to condition the materials at +15 to +20 °C, but also to pre-warm the mixer and equipment with warm water before mixing. At sub-zero temperatures, or when ice is present, heat the substrate using a flame torch or other suitable heating equipment. It is advisable to insulate the repaired areas, using insulating materials, at temperatures below +5°C. The areas should be covered for not less than 3 hours, depending on the environmental temperature.

For freezer floor repairs please refer to the local Technical Service of Sika.

Where the application temperature is above +25 °C, condition the products and equipment in cooled areas (+10 to +15 °C), in order not to reduce the open time of the wet mix and thereby allowing normal application procedure and hardening times of the mortar. The mixer, barrows and other equipment must be kept cool during the application by shading, use of cold water etc.

Do not apply SikaEmaco® T 545 if the temperature is expected to drop below -10 °C during application or within the next 4 hours.

SikaEmaco® T 545 is self-curing. Do not wet cure the material! It only must be protected from rainfall for a period of not less than 30 minutes, after placing and finishing.

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