| Abstrakt: |
This article presents information on the ways to make effective cement substitutes out of ordinary industrial wastes. Pulverised fuel ash from coal-burning power stations and ground granulated blast-furnace slag from the steel industry have long been used as cement substitutes, but these are becoming increasingly expensive both in terms of energy consumption and transportation costs. Research carried out in Wales over the past four years has thus looked at the potential for using industrial wastes in a new low-temperature, low-CO2 process for manufacturing cement substitutes. To test the effect of the wastes, two parallel series of tests have been carried out. In one, 25% of cement in the standard mix was removed, producing a weaker mix. |
