Chemical dissolution and the source of salt efflorescence in weathering of sandstone cultural relics
文献类型：期刊论文
| 作者 | Wang, Junxia |
| 刊名 | OPEN GEOSCIENCES
 |
| 出版日期 | 2025-03-03 |
| 卷号 | 17期号:1页码:15 |
| 关键词 | salt-induced weathering salt efflorescence chemical dissolution the source of salt mineralogical feature |
| ISSN号 | 2391-5447 |
| DOI | 10.1515/geo-2025-0771 |
| 英文摘要 | Salt efflorescence was known to be one of the main causes of the irreversible deterioration of stone cultural heritage. However, the source of salts in Yungang Grottoes is still a controversial issue. Partial immersion experiments of sandstone cores in relation to salt-rich groundwater with pH = 6-7 and pH = 7-8 had been executed, involving a comparative immersion in deionized water with pH = 7-8 at equivalent exposure conditions and identical solution supply. From macroscopic and microscopic perspectives, the changes in the appearance of sandstone specimens and morphologies of salt precipitates were recorded. Salt efflorescence was visible as a result of capillary migration and evaporation, especially when the sandstone specimen was immersed in salt-rich groundwater. The sulfates in precipitates from the samples immersed in groundwater showed an abundance of epsomite and gypsum. Nevertheless, a small amount of sulfates was detected at the surface of sandstone immersed in deionized water. A noticeable increase in the amount of gypsum by 4.15% and epsomite by 18.34% was detected as partially immersed in acidic groundwater with a n(Ca/Mg) of 0.675. It was concluded that SO4 2- in the precipitates mainly originated from groundwater, and the chemical dissolution of minerals can be recognized as an effective agent in salt-induced weathering of Yungang Grottoes. |
| 资助项目 | National Key R&D Program of China[2021YFC1523400] ; science and technology project for cultural relic conservation of Shanxi Culture Relics Bureau[208141400237] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001435323400001 |
| 出版者 | DE GRUYTER POLAND SP Z O O |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36710]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Junxia |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn Safety, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Junxia. Chemical dissolution and the source of salt efflorescence in weathering of sandstone cultural relics[J]. OPEN GEOSCIENCES,2025,17(1):15. |
| APA | Wang, Junxia.(2025).Chemical dissolution and the source of salt efflorescence in weathering of sandstone cultural relics.OPEN GEOSCIENCES,17(1),15. |
| MLA | Wang, Junxia."Chemical dissolution and the source of salt efflorescence in weathering of sandstone cultural relics".OPEN GEOSCIENCES 17.1(2025):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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