It is estimated that the year-on-year growth of CO 2 emissions rose from 0.9% in the 1990s to 3% in the 2000s, while annual emissions of CO 2 are nearly 29.6 billion t and on an increasing trend 2 , 3 .
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Research on mix design and mechanical performances of MK-GGBFS based geopolymer pastes using central composite design method.
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