Development of Alkali Activated Slag Cement Based Ecomaterial and its Environmental Coordination Evaluation
The slag is used as solid dispersing component with addition of a little amount of alkali component, a clinker free, alkali activated slag cement based ecomaterial (AASCBE) has been developed. The experiment results showed that the alkali activated slag cement based ecomaterial has excellent mechanical performances and durability, i.e., low energy consumption in manufacture, low environmental pollution, increased utilization of solid waste, enhanced efficiency of solid waste utilization, the heat from waste tyre or municipal domestic waste burning can be used for the material production, the CO2 can be recycled as a resource for the material curing and making the regeneration and recirculation possible. LCA study of this material shows that the complex environmental index of the alkali activated slag cement based ecomaterial is 2.9337×10-12 year/ton, which takes only 19.8% of that for Portland cement or 25.9% of that for slag cement, such material has certain environmental compensation function, therefore it is a new ecomaterial with excellent environmental coordination.
Zhong Wei Gu, Yafang Han, Fu Sheng Pan, Xitao Wang, Duan Weng and Shaoxiong Zhou
K. Chen et al., "Development of Alkali Activated Slag Cement Based Ecomaterial and its Environmental Coordination Evaluation", Materials Science Forum, Vols. 610-613, pp. 179-184, 2009