FND Concrete Mix

FND Concrete Mix

FND concrete mixes are specially formulated for use in foundations where the ground conditions are chemically aggressive—particularly in soils with high sulfate content. These mixes are engineered to deliver enhanced durability, long-term strength, and resistance to chemical attack, making them suitable for both reinforced and unreinforced foundation applications. They are commonly used in footings, ground beams, and shallow strip foundations for residential, commercial, and industrial projects

Each FND grade (e.g. FND2, FND3, FND4) corresponds to a specific level of sulfate resistance, determined by the Design Chemical (DC) class of the soil. For example, FND2 is suitable for standard aggressive conditions, while FND3 and FND4 are used in more extreme environments such as brownfield sites or areas with known chemical contamination. These mixes typically feature higher cement content and lower water-cement ratios to ensure structural integrity and longevity

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  • Applications
  • Benefits

FND2 – DC2

Shallow strip foundations – Suitable for low-rise buildings and extensions.

Ground beams & footings – Provides stability in sulfate-rich soils.

General foundation work – Used where moderate sulfate resistance is required.

Unreinforced concrete bases – Ideal for garages, conservatories, and light structures.

FND3 - DC3

Deep strip foundations – Suitable for housing and commercial buildings.

Raft foundations – Used where additional sulfate resistance is needed.

Groundwork in contaminated soils – Provides chemical protection.

Basements & retaining walls – Enhances durability against groundwater exposure.

FND4 - DC4

Deep foundations in highly aggressive soils – Provides long-term chemical resistance.

Industrial & commercial building foundations – Suitable for factories, warehouses, and large structures.

Sewage treatment plants – Protects against chemical and water exposure.

Retaining walls & underground structures – Prevents sulfate attack in harsh environments.

FND2 – DC2

Affordable sulfate-resistant foundation mix.

Provides durability for standard aggressive soils.

Can be pumped for easy placement.

FND3 - DC3

Higher sulfate resistance for aggressive ground conditions.

Pumpable mix for easier on-site placement.

Excellent long-term durability.

FND4 - DC4

Maximum sulfate resistance for extreme conditions.

Ideal for industrial and underground applications.

Optimised for deep foundations and large-scale projects.