Fosroc Nitocote CM210 | Elastomeric cementitious coating.

Nitocote CM210 is a two-component elastomeric cementitious coating used for waterproofing structures like water-retaining and water-excluding systems. Here’s a rundown of its key features:

Uses

Waterproofing for water retaining structures like tanks, reservoirs, canals, and culverts.
Suitable for potable water tanks, exhibiting good crack bridging qualities even after long-term water immersion.
Meets the maximum permissible crack widths recommended in the British Standard Code of Practice (BS8007:1987) for retaining aqueous liquids in concrete structures.

Advantages

Approved for use with potable water.
Resistant to high positive and negative hydrostatic pressures.
Exhibits excellent crack accommodation even after immersion.
Strong bond to concrete and masonry.
Long working life.
Application versatility: brush, roller, trowel, or spray.
Effective barrier against sulphates and chlorides.

Standards Compliance

Compliant with BS 6920, WRAS approved for use with potable water up to 50°C.
Tested against water penetration (DIN 1048) and fire (BS476:1987 Parts 6 and 7).

Description

A two-component polymer-modified cementitious coating, supplied in pre-packaged form for on-site mixing.
Application via brush, trowel, or spray. Roller application is suitable but finishing with a trowel is recommended.
Available in grey and white, curing to form an elastomeric impermeable membrane.

Properties

Pot life at 20°C: 2 hours; Pot life at 35°C: 1 hour
Mixed density: 1950 kg/m³
Minimum application temperature: 5°C

Cured Coating Properties

Resistance to positive water pressure: 5 bar (50m head of water pressure)
Resistance to negative water pressure: 2 bar (20m head of water pressure)
Static crack accommodation: >0.9 mm; Dynamic crack accommodation: 0 – 300 – 0 microns cycling after 28 days immersion

Specification Clause

Specifies the product, its use with potable water, crack accommodation capabilities, and resistance to water pressures.

Application Instructions

Surface Preparation: Clean surfaces free from foreign matter affecting adhesion.
Mixing: Two-component mixing instructions and precautions to ensure proper performance.
Application Methods: Instructions for brush, roller, trowel, and spray applications.
Recommendations for use in different conditions and temperatures.

Limitations

Not to be used below 5°C or exposed to rain or moving water during application.
Maximum ambient temperature for application: 40°C.

Overall, Nitocote CM210 offers an effective solution for waterproofing structures intended for potable water storage, exhibiting excellent crack accommodation and resistance to high water pressures.