Research Article

Experimental Study on the Performance and Microstructure of Cementitious Materials Made with Dune Sand

Figure 7

Scanning micrographs of cementitious materials: (a) 7 days × 100, (b) 7 days × 5000, (c) 28 days × 200, and (d) 28 days × 5000.
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(b)
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(d)