MasterEmaco S 488 (Emaco S88C) | Repair mortar for concrete

Specifications

PREPARATION OF THE SURFACE TO BE REPAIRED

• The edges of the defective area should be contoured with a diamond tool perpendicular to the surface, to a depth of at least 20 mm;

• Remove broken concrete using a light hammer drill, needle gun or water sandblaster;

• It is necessary that the surface be rough, with grooves 5 mm high, to ensure good adhesion of the base and the Emako repair mortar ;

• This operation is very important, as MasterEmaco S 488 requires a well-prepared, rough surface.

In addition, you need:

• clean the fittings from rust, if necessary, install additional fittings;

• if the repaired structure is operated in environments aggressive to concrete and steel, it is recommended to treat the reinforcement with MasterEmaco P 5000 AP material;

• repair all active leaks on the surface to be repaired using MasterSeal 590.

• clean the surface of grease, paint, lime, dirt or dust.

VALVE INSTALLATION

• The applied layer of MasterEmaco S 488  must have a thickness of at least 20 mm;

• If the thickness of the laid layer should exceed 40 mm, it is necessary to fix the plaster mesh on the anchors, leaving a space between the mesh and the surface of at least 10 mm.

IMPREGNATION OF THE SURFACE WITH WATER

• Before laying MasterEmaco S 488, thoroughly impregnate the surface to be repaired with water;

• Wetting should be done every 10-15 minutes, for at least 3 hours;

• Excess water should be removed with compressed air or rags;

• The surface before laying MasterEmaco S 488 must be damp, but not wet.

Preparation of dry repair mortar EMACO

Before mixing MasterEmaco S 488 with water:

• check that the available amount of MasterEmaco S 488 will be sufficient, taking into account its consumption (2000 kg dry mix MasterEmaco S 488 for the preparation of 1 m3 of repair mortar);

• make sure that all necessary materials and equipment (mixers, carts, buckets, trowels, etc.) are at hand;

For the correct preparation of the solution, use the following instructions:

• open the bags with MasterEmaco S 488 necessary for work, shortly before mixing;

• pour the minimum amount of water into the mixer;

• turn on the mixer, quickly and continuously add MasterEmaco S 488;

• after all MasterEmaco S 488 has been poured in, mixing should be continued for 3-4 minutes until lumps disappear and the mixture becomes homogeneous;

• if necessary, add water, as required within the prescribed amount, until the desired consistency is reached, and mix again for 2 to 3 minutes;

• water content may vary slightly, depending on ambient temperature and relative humidity;

• in hot and dry weather, more water may be required, in cold and humid weather, less;

• for small batches, you can use a mixer (no more than 300-400 rpm) with a spiral nozzle;

• Mixing MasterEmaco S 488 with gravity mixers or by hand is not recommended.

Laying the prepared repair compound Emako

• The prepared Emako repair compound can be applied using plaster stations or laid with a trowel;

• When applying the material manually, it is recommended to prepare a primer layer of MasterEmaco S 488 with a more liquid consistency and apply to the surface, rubbing the mixture into the base with a brush, with hard bristles;

• Then apply the base coat using the “wet on wet” method;

• If desired, using a wooden, plastic or synthetic sponge float, the surface can be made smooth;

• Grating after application can only be started when the repair compound has set, i.e. when the fingers, when pressed, do not drown, but only leave a slight trace.