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

Non-shrinking, reinforced, cement, repair dry mix Emako, for the repair of concrete floors

Description

Characteristics

Application

MasterEmaco S 488 | Ready-to-use material, in the form of a dry mortar , with a maximum aggregate size of 2.5 mm.

MasterEmaco S 488 | non-shrinking, fast-hardening dry mix of thixotropic type , containing polymer fibers, intended for structural repair of concrete and reinforced concrete.
MasterEmaco S 488 | when mixed with water, a thixotropic, non-separating mortar with good adhesion to steel and concrete is formed.
MasterEmaco S 488 | is non-shrinking, both in the plastic and in the hardened state.
MasterEmaco S 488 | does not contain metal fillers and chlorides.
During repair work, the material is recommended to be applied to the surface with a spray or trowel, with a thickness of 20 to 40 mm, in one layer.
If a repair layer of a greater thickness is required, the application is carried out in several layers.

dry repair mixture Emako, used in the repair of reinforced or prestressed beams;
repair of damaged and destroyed elements of concrete and reinforced concrete structures;
repair of elements of load-bearing structures, bridge supports, etc. subject to repeated loads;
repair of structures of machine shops, especially in places where there are a lot of mineral oils, lubricants;
repair of berths in ports;
repair of vertical and ceiling surfaces;
repair of chimney linings;
restoration of protective layers of reinforced concrete structures;
repair of concrete floors;

It is not recommended to use MasterEmaco S 488:

for pouring into formwork (use of MasterEmaco S 488 PG is recommended );
without additional protection, in contact with a medium having a pH value of less than 5.5.

MasterEmaco S 488 is packed in moisture-proof bags, 25 kg each.

To prepare 1 m3 of repair compound, 2000 kg of MasterEmaco S 488 is required.

Guaranteed shelf life of Emaco material, in undamaged original packaging, is 12 months;
It is necessary to store Emako dry repair mortar in a dry closed room at a temperature not lower than + 5°C.

Material MasterEmaco S 488 can be used at air temperature during work from + 5°C to + 50°C;
At low ambient temperatures (from +5°С to +10°С), strength increases more slowly;

If high early strength is required, it is recommended:

store bags with MasterEmaco S 488 in places protected from the cold;
use hot water for mixing (from +30°С to +40°С);
after laying, cover MasterEmaco S 488 with heat-insulating materials;
if the temperature is below +5°C, MasterEmaco T series materials should be used.
If the ambient temperature is very high (above +30°C), then the only problem is the rapid loss of mobility of the Emaco repair mortar.

Maximum aggregate size, mm	2.5
fiber filler	Polymeric
Preservation of mobility, min.	At least 30
Expansion in limited state, %	0.05-0.09
Adhesion strength with concrete, MPa	At least 2.5
Frost resistance grade, for road and airfield concrete, operated in a mineralized environment	Not less than F2300
Waterproof brand	At least W16
Sulfate resistance coefficient (365 days), %	Not less than 0.9
Material consumption, kg/m3	2000

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.

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.

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.

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.

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.