Fly Ash For Concrete

Fly Ash for concrete is another product from Aggregate Industries, one of the UK's leading cement suppliers. It’s just one of our range of high-quality materials for general and specialised building projects aimed at optimising results.

A significant industrial waste material, fly ash is a fine, powdery byproduct that results from the combustion of pulverised coal in coal-fired power plants. It is composed of mineral particles that are carried up into the atmosphere during the burning process and subsequently collected. It is often used as a supplementary cementitious material in the construction industry.

If you’re looking to create durable and sustainable concrete, you’ll find that fly ash is a key ingredient. Working in tandem with Portland cement, for example, fly ash can significantly enhance both the performance and workability of concrete.

Fly ash reduces the risk of sulphate and chlorine ingress, protecting against Alkali-Silica Reaction (ASR) from certain aggregates. PFA and fly ash as an addition in concrete is covered by the specification BS EN 405-1.

Versatile, adaptable and robust, fly ash is a go-to material for construction professionals across the UK. Applications in which it is useful range from precast concrete units, foundations and wind farms to soil stabilisation, highways, coastal structures and tunnelling.


We offer two different grades of fly ash:

EN450-1 fineness category N is perfect for durable and sustainable concrete, and is great for ready mix applications. It improves concrete durability, reduces the heat of hydration, minimises the risk of ASR and embedded CO2, all while retaining workability.

The EN450-1 fineness category S, provides the ultimate in fly ash performance. It has all the benefits of the N grade, but with controlled fineness for consistent performance and optimisation of the water to cement ratio.

Contact us

See a range of our cement products:

18 Results

ECOPlanet Endure brings together the perfect combination of eco credentials and exceptional performance. With a higher level of sulfate resistance, this versatile cement is ideal for precast concrete and below ground concrete works.  

32,5R strength lower carbon cement with excellent performance. Available in 25kg paper bags.

32,5R strength lower carbon cement with excellent performance. Available in water and tear resistant 25kg plastic bags.

An engineered solution for chemical soil stabilisation, TerraCem is designed to modify and improve weak or contaminated soils. Ideal in site preparation for infrastructure or building projects.

Fast setting cement for use on projects where strength, speed & durability are key.

Lower carbon sulfate resistant cement with a high strength of 42,5N. Perfect for below ground & structural works. 

Lafarge High Strength cement is a quality BS EN 197-1 CEM I 52,5N Portland cement ideal for structural works.

Premium 52,5R strength white Portland cement, perfect for producing light concrete & mortars.

Premixed ready-to-use post fix concrete perfect for securing wooden, metal or concrete fence posts. Available in 20kg plastic bags.

Ready-to-use 40N High Performance Concrete, perfect for any structural or general application.

A moderately hydraulic lime mix ideal for mixing lime mortar, lime render or lime plaster. Available in 25kg bags.


A high calcium, non hydraulic, hydrated lime. Available in 25kg paper bags.

General purpose premixed mortar ideal for all masonry works, from block & bricklaying to pointing.  

Our most versatile cement. Portland Cement is the most commonly used cement in the UK. Suitable for a range of uses and produced to consistent quality standards.

High strength 52,5N CEM II/A-L quality controlled to conform to BS EN 197-1. It's lighter grey colour makes it perfect for architectural projects, as well as for precast concrete, readymix, screed, mortar, render, grouts and volumetric production.

Lafarge white Portland cement is a premium 52,5R strength product designed to lighten and brighten concrete or mortars. It's perfect for projects where a bright white finish is required, such as paving slabs & street furniture.

Lafarge SustainaCem cement is a pre-blended sustainable binder for use in the concrete products market, offering a 15% reduction in embodied carbon compared to CEM I ordinary Portland cement.