Cementitious Coating 851 - cementitious modified polymer coating with high adhesion to both steel and concrete
(en1504-2, dwi 3, bba, wras)

Flexcrete's Cementitious Coating 851 is a two component, thixotropic, cementitious modified polymer coating with high adhesion to both steel and concrete. Cementitious Coating 851 forms a hard, highly alkaline coating with a degree of elasticity which not only protects the concrete, or other substrates, from the effects of aggressive acid gases, moisture and chlorides, but also has greatly enhanced chemical resistance.

Cementitious Coating 851 is used for structural waterproofing of concrete and other mineral substrates, resisting positive and negative pressure under a 100 metre head. Designed for internal and external sealing of water retaining structures, including drinking water reservoirs. Waterproofing of road, ramp and bridge decks prior to the installation of traditional asphalt road surfacing.

Cementitious Coating 851 is extensively used for the protection of reinforced concrete from chloride attack on highway and coastal structures even in areas subject to immersion. Ideal for substructure protection in chloride-laden ground conditions. Provides reinstatement of effective cover for precast and insitu reinforced concrete, enhancing durability to achieve specified design life.

Advantages of Cementitious Coating 851

Simple: Materials are pre-packaged in a convenient and easy to handle size. Requires only mixing on site.
Easy to use: Brush, trowel or spray applied, normally in two coats.
Resistant: Good abrasion and very high resistance to freeze/thaw cycles and de-icing salts.
Adhesive: Excellent adhesion to steel and sound prepared concrete substrates.
Safe: Non-toxic when cured and is listed as authorised under Regulations 31 for use in the supply of water for drinking.
Impermeable: Dense matrix offers low permeability to water, even at 10 bar pressure, and very high diffusion resistance to carbon dioxide gas and chlorides.
Compliant: Cements used are quality assured complying with BS 12. Approved by the BBA, Certificate No. 05/4276.
Cost Effective: Economical.
Overcoating: Easily overcoated with other specialist membranes in the Flexcrete range to provide further protection and aesthetic quality.

Cementitious Coating 851 Product Summary

Product Uses Pack Size Thickness Performance Pack Yield (approx)
CEMENTITIOUS COATING 851
EN1504-2,
DWI 31, BBA, WRAS

Structural waterproofing.  Protection from chloride ingress and carbonation.  Reinstatement of cover. 30kg 2 x 1mm 1 day 10.5N/mm²
7 days 20.5N/mm²
28 days 32N/mm²
16.67 litres per 30kg
8.33m²/30kg @ 2mm
Density: 1800kg/m³

For more detailed product information download:

Cementitious Coating 851 Technical Data Sheet
Cementitious Coating 851 Safety Data Sheet
Cementitious Coating 851 Application Guide