Ash Resources provides high performance fly ash solutions engineered to meet the diverse needs of South Africa’s and global construction, infrastructure, mining, and industrial sectors. With a proven track record in quality assurance and technical support, our fly ash products enhance material performance, improve long term durability, and deliver measurable value across a wide spectrum of applications.
Through our extensive experience and technical expertise in the fly ash business, we have developed a range of fly ash products. The company’s main grades of fly ash are divided into two broad groups: classified and unclassified. ‘Classifying’ refers to our investment in specialised air separation equipment to manufacture products that conform to specifications requiring particular size ranges. Our products are designed to meet the performance needs of customers’ specific applications
Fly ash is a finely divided mineral material produced during the combustion of coal in the power generation sector. Rich in reactive silica and alumina, it behaves as a high‑performance pozzolan that enhances the engineering properties of cementitious systems. At Ash Resources, fly ash is not treated as a by‑product but as a precision‑engineered material. Through rigorous quality control, continuous sampling, and adherence to local and international standards, we ensure that every batch meets the performance expectations of the construction, infrastructure, and industrial markets we serve.
Ash Resources applies advanced beneficiation and classification technologies to deliver fly ash with consistent fineness, low carbon content, and predictable reactivity. Our processing systems are designed to optimise particle size distribution and remove impurities, resulting in a stable, high‑quality product suitable for demanding applications such as high‑performance concrete, blended cements, and specialised industrial formulations. This commitment to controlled processing, backed by decades of technical expertise, positions Ash Resources as a trusted supplier capable of supporting long‑term durability, sustainability, and performance across the built environment.
Unclassified fly ash is collected directly from the power station’s electrostatic precipitators and delivered without additional processing. It contains the full range of particle sizes naturally produced during coal combustion. This makes unclassified fly ash suitable for applications where broad gradation is acceptable, such as general fill, soil stabilisation, and certain mining or civil engineering uses.
Classified fly ash undergoes an additional beneficiation process, where the raw ash is passed through classifiers to remove coarser particles and achieve a finer, more consistent particle size distribution. This refinement improves reactivity, enhances pozzolanic performance, and ensures predictable behaviour in cementitious systems. Classified fly ash is therefore preferred for high‑performance concrete, blended cements, grout, and other applications requiring superior strength development and durability.
Classified fly ash products: Ash Resources’ classified range of products comply with the chemical and physical requirements of SANS 50450-1, Category S, and carry the SABS Mark
