AfriSam, as part of its efforts to conserve the environment, perfected the art of producing composite cements using additives as partial replacement for cement.
While Portland cement served the industry for well over a century it has been superseded by composite cement. Using sustainably sourced materials coupled with more environmentally friendly manufacturing processes, these are blends of high-performance cement with carbon-neutral mineral components designed to achieve excellent cementitious properties.
Depending on the compressive strength, the carbon footprint is reduced by between 46% to 51% when compared to typical industry cement. An example of this is the AfriSam Eco Readymix brands – Starmix, Foundation Mix and Retainer Mix – which were developed to suit construction sector applications.
“The performance of the Eco Readymix concretes is far superior to concrete made from pure types of cement. AfriSam can produce ultra-high-performance Eco Readymix concretes with compressive strengths of above 70 MPa.”
AfriSam, as part of its efforts to conserve the environment, perfected the art of producing composite types of cement using additives as a partial replacement for cement. Not only does this practice of recycling products from other industries to minimize harm to the environment, but these additives also enhance the performance of cement and offer advantages over ordinary Portland cement.
The additives include limestone, fly ash (a by-product of coal-fired power stations) and ground granulated blast furnace slag from the steel industry. These products behave like pure types of cement in the presence of cement of lime.
Significantly despite the low carbon footprint, the performance of the Eco Readymix concretes is far superior to concrete made from pure types of cement. AfriSam can produce ultra-high-performance Eco Readymix concretes with compressive strengths of above 70 MPa.
Years of research and development in cement products and in particular C-Tech technology has given several distinct advantages overs pure types of cement including improved workability, reduce the heat of hydration, reduced susceptibility to chemical attack and increased erosion resistance. The resultant concrete is less permeable and more resistant to corrosion. They also continue to gain strength over time.