fig2
![Influence of Ca on the mechanical properties and microstructures of slag-fly ash geopolymers](https://image.oaes.cc/2b0f057a-fe4a-44f0-a34d-074e993518ea/4613.fig.2.jpg)
Figure 2. Compressive strength of geopolymers prepared with different proportions of BFS in air, carbonization and freezing-thawing process. BFS: Blast furnace slag.
Figure 2. Compressive strength of geopolymers prepared with different proportions of BFS in air, carbonization and freezing-thawing process. BFS: Blast furnace slag.
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