Portland cement concrete is the most consumed material in buildings and infrastructure. The use of portland cement is not limited to building constructions, it is also used as a repairing material. The production of portland cement has a noticeable economic and environmental effects. The paper addresses the economic and environmental benefits of using calcined clay as supplementary cementitious material with high partial replacement of portland cement. The economic benefits include the initial costs and the maintenance cost, which is achieved by enhancing the concrete durability. The cost of calcined clay is strongly affected by the transportation expenses and the availability of local sources. The environmental benefits include the reduction of the CO2 footprint caused by portland cement production.
Key words: cement, calcined, clay, emissions, durability, mixture
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