Research Article
Experimental Investigation of Closed Porosity of Inorganic Solidified Foam Designed to Prevent Coal Fires
Figure 7
Optical images of (a) 7.4 × 10−3 mol/L SDS + 7.5 × 10−5 mol/L gelatin, (b) 7.4 × 10−3 mol/L SDS + 16.7 × 10−2 mol/L AC, and (c) 7.4 × 10−3 mol/L SDS + 10 × 10−5 mol/L gelatin + 14.3 × 10−2 mol/L AC.
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| (b) |
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