惠宇 李

Prof. 惠宇 李

School of Digital Art and Design, Qingdao City University, Qingdao, Shandong, China
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Life is full of surprises

Research Focus & Metrics

Academic Career Length

1Year (2026-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 October 2026 in Materials
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Journal Article
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MINGYI ZHAOMINGYI ZHAO
MINGYI ZHAO
惠宇 李惠宇 李
惠宇 李
Jingwei LiangJingwei Liang
Jingwei Liang
Qingnian DengQingnian Deng
Qingnian Deng
Guo JinjingGuo Jinjing
Guo Jinjing
Liang ZhengLiang Zheng
Liang Zheng
Characterizing material variation is relevant to the conservation of historic city walls. This study examined five masonry fragments from the East Gate of the Shouxian County City Wall using petrographic microscopy, X-ray diffraction (XRD), and scanning electron microscopy–energy-dispersive spectroscopy (SEM–EDS). Six thin sections showed fine-grained continuous matrices in Samples A and C, abundant coarse grains in B and E, and contrasting optical characteristics between the two sections of D. Calcite and quartz were identified in all five XRD patterns. Local EDS analyses recorded mixed elemental distributions and regions with prominent Fe, Ca, or C and O signals. SEM revealed blocky, platy, and granular particles, together with filamentous, tubular, and folded film-like features. Material heterogeneity here refers to contrasting matrix–grain textures and local elemental distributions within a sample set sharing calcite and quartz. These differences may reflect variation in materials used during construction or repair, without identifying specific historical phases. They support recording individual masonry units and their interfaces before conservation interventions.