Pulverised Fuel Ash (PFA), also known as fly ash, is a fine, pozzolanic material. When blended with lime or cement, it reacts chemically to form additional binding compounds, improving the strength, workability, and long-term durability of mortars, plasters, grouts, and concrete.
Due to its slow-reacting pozzolanic nature, PFA is widely used in heritage conservation, limecrete flooring, and grout injection for masonry repairs, where controlled setting and long-term flexibility are required. It also contributes to lower embodied CO₂, making it suitable for eco-conscious construction.
Key Benefits
✅ Pozzolanic Reactivity – Reacts with free lime to create additional cementitious compounds, enhancing durability.
✅ Improved Workability – Provides a smoother, more plastic mix for easier application and finishing.
✅ Reduces Cracking & Shrinkage – Enhances long-term flexibility in lime and cementitious materials.
✅ Improves Sulphate Resistance – Increases resistance to chemical attack and salt degradation.
✅ Sustainable & Resource-Efficient – A recycled industrial by-product that reduces reliance on primary raw materials.
✅ Extended Setting Times – Useful in hot weather or where longer working times are desirable.
