Koster Sewer and Shaft Mortar 25kg

Koster sewer & Shaft Mortar is a water tight, fast curing and fast setting restoration mortar specially designed for sewers and shafts. KÖSTER Sewer and Shaft Mortar develops a high compressive strength, is fiber reinforced, very easy to apply and workable even under flowing water. Approved for drinking water applications.

Consumption: Approx. 1.8kg/l void as repair mortar; Approx. 18kg/m²; per cm layer thickness

Fields of Application
KÖSTER Sewer and Shaft Mortar can be used for the watertight repair,
renovation, and touch ups of sewer and shaft systems, as well as for
levelling and filling of break-outs up to 3 cm per layer.

Technical Data
Density of fresh mortar 1.8 kg / l
Compressive strength (24 hours) > 18 N / mm²
Compressive strength (7 d) > 35 N / mm²
Compressive strength (28 d) > 50 N / mm²
Bending tensile strength (24 h) > 3,5 N / mm²
Bending tensile strength (7 d) > 6 N / mm²
Bending tensile strength (28 d) > 7 N / mm²
Pot life (+ 20 °C) approx. 20 min.