Fescotop F90K high-performance concrete

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Product description

Fescotop F90K is a cement-based, fibre-reinforced high-performance concrete for sites requiring impermeable concrete surfaces resistant to wear and corrosive substances. The maximum grain size is 3.0 mm.Contains corundum. 

  • Easy to use                                                                              
  • Excellent workability characteristics

Minimum delivery is 3000 kg.

EAN code Product name Product number Package size
6416841770264 Fescotop F90K high-performance concrete 77026 25 kg

The underlaying concrete must be C25/30, at least, and the surface must be free of poorly attached concrete.  The surface is cleaned of old coatings, cement glue, and other substances that worsen adhesion.


Water requirement approx. 10-12 %. Add the dry material to the water and mix with a concrete mixer for around ten minutes. With a power mixer, around one to three minutes of mixing is sufficient. Let the mass stand for approximately 5 minutes, and mix it briefly anew. Find the correct consistency at this stage by gradually adding the rest of the water. We do not recommend adding all of the water right at the start. The finished concrete remains workable for approximately one hour.

Pretreatment fresh casting

The strength of the underlaying concrete must be C25/30, at least. When the underlaying concrete can withstand walking on it, lapping with a plate can be started. Lapping is continued until the High-performance concrete is applied. High-performance concrete is transferred by a trolley or pump. The pump needs to be powerful enough and the hose diameter no less than 50 mm. Spreading by a straightedge or vibrating blade. The surface is lapped with a plate and finished with a blade.

Pretreatment hardened concrete base

The base has to be solid and clean, with the strength of at least C25/30. The most recommended treatment from the point of view of adhesion is mechanical milling. To avoid cracks, it is important to wet the base carefully on the previous day, specifically. Onto the base, damp enough to be darker in colour, a 2-component Fescon Bedding mortar 2-K is spread. The amount of adhesive plaster 2-3 kg/m2 (of dry product). The adhesive plaster must not set before the High-performance concrete is applied. Variations in the amount of adhesive plaster cause variation in the time of starting surface treatment. Spreading, lapping, and finishing as for fresh casting, for the most part.  However, finishing that continues for too long can weaken the adhesion to the base.

Casting work is done according to the normal working methods, the instructions of the designers and official regulations.

Note! High-performance concrete is removed from walls and pillars as the underlaying concrete. The same is true for expansion joints with regard to the underlaying concrete.


Immediately after finishing, Fescon Curing Compound is spread onto the surface by using an appropriate working method. Consumption approx. 0.1 kg/m2. The next morning the surface is additionally wetted and covered in plastic. Aftercare must continue according to the BLY aftercare instructions and for at least 7 days.

Other considerations

Tools are washed with water.

Storage and handling of waste
See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Material usage

about 32 kg/m2 with a layer of 15 mm (extremely heavy wear)

about 21 kg/m2 with a layer of 10 mm (heavy wear)

about 17 kg/m2 with a layer of 8 mm (light wear)

Water requirement 2,5 - 3,0 l / 25 kg
Finished compound 12 - 13 l / 25 kg
Type powder
Maximum grain size

3 mm

Package size 25 kg

min. 12 months (protected from humidity and frost)

Lowest usage temperature


Workability time 1 h
Drying time

pedestrian traffic 1-2 days
light traffic 7-10 days
fully dried 28 days

Compressive strength

approx. 60 MPa

Strength development

1 day: approx. 20 - 30 MPa (EN 196-1)
7 days: approx. 40 - 50 MPa
28 days: approx. 50 - 60 MPa

Wear resistance

(Böhme test) 4.0 cm3 / 50 cm2

wear resistance class A 6


28 days: 1.25 ‰ (UNI 6555-73)

Fire class A1

Fescotop F10

  • A quartz-based dry-shake hardener for hardening concrete surfaces
  • Maximum grain size 3 mm
  • Available in 9 standard colours

Fescotop F45K

  • A corundum-based dry-shake hardener for hardening concrete surfaces
  • Maximum grain size 3 mm
  • Available in 9 standard colours