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<p>In this paper, a scientific experimental study was conducted on the green-gray decorative bricks used in the walls of ancient dwellings from the Qing Dynasty in Southern Anhui Province to deepen the scientific understanding of their production process. Utilizing scanning electron microscopy (SEM), X-ray fluorescence (XRF), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), the study explored the characteristics of the green-gray decorative bricks in terms of their micro-morphology, material composition, structural features, and firing temperature. The results indicated that the firing temperature of the finished bricks was lower than 600 °C. Although the finished bricks exhibited different color cross-sections, their mineral compositions were fundamentally similar, primarily consisting of quartz, potassium feldspar, plagioclase feldspar, and amphibole. Additionally, the significant variation in iron content accounts for the differences in brick color. These findings provide scientific guidance for the restoration of the production process of decorative bricks.</p>

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Characterization of decorative bricks from Qing Dynasty dwellings in southern Anhui Province of China

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月8日

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  • Sun Sheng,
  • Jin Pu-jun

摘要

In this paper, a scientific experimental study was conducted on the green-gray decorative bricks used in the walls of ancient dwellings from the Qing Dynasty in Southern Anhui Province to deepen the scientific understanding of their production process. Utilizing scanning electron microscopy (SEM), X-ray fluorescence (XRF), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), the study explored the characteristics of the green-gray decorative bricks in terms of their micro-morphology, material composition, structural features, and firing temperature. The results indicated that the firing temperature of the finished bricks was lower than 600 °C. Although the finished bricks exhibited different color cross-sections, their mineral compositions were fundamentally similar, primarily consisting of quartz, potassium feldspar, plagioclase feldspar, and amphibole. Additionally, the significant variation in iron content accounts for the differences in brick color. These findings provide scientific guidance for the restoration of the production process of decorative bricks.