COMPARATIVE STUDY OF CLINKERS BURNED WITH UP TO THIRTY PERCENT SUBSTITUTION OF FUEL FOR WASTE FUEL

摘要

A comparative study has been carried out on clinkers burned with up to 30% substitution of fuel for a blended waste fuel. The study aims to check the influence of burning waste on the manufacture process through the evaluation of clinker microstructure as well as to observe the increase on heavy metals in clinkers burned with waste. Cement performances have also been evaluated and leaching tests have been carried out. Cadmium, Hg, Tl, As, Co, Ni, Se, Ag, Ba, Cr, Cu, Pb, Sb, Zn, Mn, V and Sn contents were obtained by atomic absorption spectrometry; and clinker microstructure analysis, by reflected-light microscopy. The results show that substitutions for waste fuel have not brought out any visible changes in clinker microscopic features or adverse effects on cements mechanical performances. Heavy metals contents have not increased significantly as to influence clinker properties.