ISOMAT AK-FIRE 25KG Refractory mortar for building and grouting firebricks

ISOMATAK-FIRE  is a cement-based mortar for firebricks.

• It contains refractory cement and quartz aggregates of graded granulometry.
• It is characterized by excellent resistance to high temperatures and intense temperature changes, excellent workability, high initial and final bonding ability and particular resistance to moisture.

Form:  cementitious powder
Colour:  grey
Water requirement:  4.75 l/25 kg bag
Apparent weight of dry mortar:  1.55 ± 0.10 kg/l
Apparent weight of wet mortar:  1.80 ± 0.10 kg/l
Application temperature:  from +5ºC to +35ºC
Compressive strength:  Class M 25 (EN 1015-11)
Flexural strength:  > 6.0 N/mm2
Initial shear bond strength:  0.15 N/mm2 (value from table)
Fire resistance:  Class A1 (EN 13501-1)
Density (dry hardened mortar):  1,700 kg/m3 (EN 1015-10)

Water absorption:  0.3 kg/m2min0.5 (EN 1015-18)
Water vapor permeability:  μ 15/35 (EN 1745 value from table)
Thermal conductivity:  (λ10, dry) 0.75 W/mK (EN 1745, P=50%)
Pot life:  at least 3 h
Operating temperature:  up to + 1,200ºC

1. Consumption depends on the dimensions of the firebricks and the width of the joint.
2. Indicative consumption for firebricks measuring 20x10x3 cm with a joint width of 1 cm: approximately 5 kg/

ISOMAT AK-FIRE  is suitable for building and grouting all types of firebricks in structures where high temperatures develop, such as fireplaces, ovens, barbecues, chimneys, etc. It is also ideal for repairing worn firebrick joints. It is applied indoors and outdoors.