Fast-setting and hardening one-component cementitious mortar for repairing and protecting sewerage systems. It can be applied manually or by dry spray. Sewament 40 is used for the cortical restoration of damaged precast or placed concrete urban water purification system structures and sewerage systems. Sewament 40 is made up of hydraulic binders, selected graded aggregates, special water retaining additives and synthetic fibres. Sewament 40 is resistant to the chemical aggression produced by sulphuric acid following the bacterial oxidization of the acid as the result of the anaerobic fermentation of civil and industrial liquids. Sewament 40 mixed with water becomes a thixotropic mortar, fast-setting and hardening, easily workable manually and with a dry spray machine. Sewament 40 can be applied, maximum 20 mm per layer, on the substrate which is sufficiently uneven (roughness not less than 5 mm). Thicker layers must be applied in several coats. If the thickness needs to be more than 30 mm, it is essential to insert a reinforced net appropriately distanced from the substrate. Finish the surface with a sponge float or with a flat trowel. At +10°C the surfaces repaired with Sewament 40 are ready for use after 8 hours.
Consumption approximately 18.7 kg/m2 per cm of thickness.
Technical data sheet
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