Properties of Pulverized Burnt Clay and Calcium Oxide Blended Concrete

Abstract

This paper reports the results of investigation to assess the sustainability of pulverized burnt cement (PBC) and Calcium Oxide (CaO) for blended cement production. Tests were conducted on cement, where Pulverized Burnt Clay (PBC) was replaced by CaO within the range of 10 to 40%. The physical and chemical properties of PBC and CaO were critically reviewed to evaluate the possible influence on cement properties. The investigation included testing on both fresh and hardened states of cement paste. The standard tests conducted on different PBC / Cao mixtures provided encouraging results, comparable to those for Ordinary Portland Cement (OPC), and showed good potential of manufacturing blended pulverized burnt clay and (CaO) cement with higher setting time and low heat of hydration using up to 30% replacement.