Waterproofing and high chemical resistant protection, Sikagard® -7000 CR

Application of 1 coat with minimum total approximate thickness of 0,2 (or 0,3) mm of two-component, Xolutec based primer Sikagard® P 770, followed by application of 2 (3) coats with minimum total approximate thickness of 0.8 (1.2) mm of the two-component Xolutec based waterproofing membrane Sikagard® M 790.

Physical properties of the product:

Impermeability to water under pressure (+ side): ≥ 5 bar

Impermeability to water under pressure (- side): ≥ 1,5 bar

Capillary water absorption (EN 1062-3): ≤ 0.1 kg/m²/h0.5

Permeability to water vapour (EN ISO 7783-1, EN ISO 7783-2): Sd ≥ 120 m (0,8 mm thickness)

Permeability to carbon dioxide (EN 1062-6): Sd ≥ 200 m (0,8 mm thickness)

Abrasion resistance (EN ISO 5470-1 - Taber H22, 1000 g, 1000 c): ≤ 200 mg

Impact resistance (EN ISO 6271-1): ≥ 20 Nm

Adhesion to concrete (EN 1542): ≥ 2,5 N/mm2

Adhesion to concrete after freeze-thaw cycling (EN 13687-1): ≥ 2,5 N/mm2

Crack bridging (EN 1062-7 A- Static): ≥ A3 (+23ºC); ≥ A2 (0ºC); ≥ A2 (-10ºC)

Crack bridging (EN 1062-7 B - Dynamic): ≥ B3.1 (+23ºC); ≥ B2 (-10ºC)

Resistance to biogenic acid corrosion (after an accelerated 72 weeks period equivalent to 11 to 14 years period in real sewer system):

- No significant change in tensile strength and permeability.

- Adhesion tests show cohesive failure on concrete substrate.