The issue of reducing the pressures of pollution on the environment is high on the priority list of cement manufacturers globally. In the last decade, significant advances have been reported on colder and greener technologies for cements and cementitious systems which throw open various technological options.
The trends of research has been in the direction of utilisation of industrial wastes like fly ash, slags and other industrial wastes , for producing cementitious products that are comparable in properties to conventional cements . Other avenues of investigation are in areas of alternative cementitious phase composition with lesser detrimental effect on environment, these cementitious system includes cements like reactive Belite, sulphoaluminate , fluoroaluminate , phosphatic cements, etc. these cements would help reduce the emissions of SO2 / CO2, CO, etc. and result in savings in natural resources and fuel economy .
Globally another pursued areas of research is for evolving alternative pyro – processing technologies which are environmentally friendly that could alter the pollution prone
conventional pyro-processing technologies. The paper reviews some of the recent advances in this area.
The authors have also discussed some of the recent researches in greener concrete which could lead to effective utilisation of fly ash on one hand and on the other hand generate more greener environments