Research Article

Experimental Study on the Effect of Expansive Agent on the Durability of Concrete in Civil Air Defense Engineering

Figure 2

Distribution of free chloride ion content in concrete with different mix proportions and different systems. (a) Free chloride content diagram under S1 system. (b) Free chloride content diagram under S2 system. (c) Free chloride content diagram under S3 system.
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(b)
(c)