Used in the construction and agricultural industries, our limestone filler has a minimum Calcium Carbonate (CaCO3) content of 70%, a maximum moisture content of 1%, and a bulk density of between 0.5 and 0.9 Mg/m3 in line with CE requirements.
Filler is made from either excess filler from asphalt plants, virgin limestone (produced at Wicken in Cambridgeshire, Shap in Cumbria, and Gurney Slade in Somerset), or a careful balance of the two.
Applications include use in high quality asphalt fillers and calcium-based agricultural fertilisers.
Consistent quality control is maintained by three laboratories, located throughout the country, carrying out regular quality testing for all Francis Flower products. The company has its own X-Ray Fluorescence (XRF) machine to determine the calcium carbonate content of asphalt fillers.
A key asset of the Francis Flower filler business is the company’s extensive silo network, which gives us the capability to store up to 20,000 tonnes of filler, across 60 strategically placed silos. This means that filler can be distributed throughout the whole UK on a just in time basis.
Francis Flower storage silos are also located on customer sites in order to collect excess material from the asphalt manufacturing process, which can then be recycled. Francis Flower filler is most commonly used in road surfaces (from A and B roads, to motorways) but it is also used in the construction of runways at both commercial and armed forces airports in the UK and overseas.
Francis Flower also bag asphalt filler for export and in the last few years have supplied material to both the Ascension and Falkland Islands.
For more information please contact us.