Scholarlink

<p>To elucidate the erosion mechanisms of carbonate stone cultural heritage under acidic gases in the absence of directly observable liquid water, this study investigates coupled weathering within a gas–condensed liquid–rock system driven by adsorption, capillary condensation, and diurnal temperature fluctuations. An accelerated laboratory simulation under SO₂ and NOₓ enriched atmospheres was conducted. Marble and limestone were characterized before and after weathering and under natural exposure in terms of morphology, microstructure, color change, mass loss, pore evolution, salt formation, and Ca²⁺ migration. Results show that SO₂ and NOₓ penetrate mesopores via adsorption and capillary condensation, dissolve in condensed water to form acidic solutions, and induce pore dissolution, salt crystallization, and deterioration such as powdering and exfoliation. NOₓ exhibits stronger chemical erosion than SO₂. This work advances understanding of non-liquid-dominated weathering and informs conservation in arid and semi-exposed environments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the weathering mechanisms of carbonate stone cultural heritage in acidic gas environments

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月7日

查看全文
  • Liuliu Li,
  • Dingchao Chen,
  • Xiaowei Zhao,
  • Jinyi Zhao,
  • Ying Qin

摘要

To elucidate the erosion mechanisms of carbonate stone cultural heritage under acidic gases in the absence of directly observable liquid water, this study investigates coupled weathering within a gas–condensed liquid–rock system driven by adsorption, capillary condensation, and diurnal temperature fluctuations. An accelerated laboratory simulation under SO₂ and NOₓ enriched atmospheres was conducted. Marble and limestone were characterized before and after weathering and under natural exposure in terms of morphology, microstructure, color change, mass loss, pore evolution, salt formation, and Ca²⁺ migration. Results show that SO₂ and NOₓ penetrate mesopores via adsorption and capillary condensation, dissolve in condensed water to form acidic solutions, and induce pore dissolution, salt crystallization, and deterioration such as powdering and exfoliation. NOₓ exhibits stronger chemical erosion than SO₂. This work advances understanding of non-liquid-dominated weathering and informs conservation in arid and semi-exposed environments.