Corrosion Products and Microstructural Evolution of Ordinary Portland Cement and High-Performance Concrete After Eight Years of Field Exposure in Qarhan Salt Lake.

The corrosion product Kuzel’s salt exhibited an increasing trend with higher-strength grades. 3.5.

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Trace amounts of brucite (Mg(OH) 2 )—identified by characteristic peaks at 0.239, 0.474, and 0.157 nm, along with the 318 phase and AFm (3CaO·Al 2 O 3 ·CaSO 4 ·12H 2 O), with characteristic peaks at 0.895, 0.450, and 0.287 nm—appeared in the shallow layers but disappeared in the deeper layers, following a decreasing trend with depth.

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