文物保护与考古科学2024，Vol.36Issue(3)：28-37,10.DOI:10.16334/j.cnki.cn31-1652/k.20230402879
微生物诱导矿化修复阿尔寨石窟红砂岩壁面酥碱病害试验研究
Experimental study on the treatment of salt efflorescence on the wall of red sandstone in Arjai Grottoes based on the MICP technology
摘要
Abstract
Arjai Grotto Temple is the largest and most completely preserved grotto temple complex in Inner Mongolia.It contains precious artistic information about history,religion,science and culture,and is known as"Dunhuang on the grassland".Due to the typical climatic characteristics of the local arid and cold regions,salt efflorescence has become one of the most serious diseases of grotto walls.At present,Arjai Grottoes are in the stage of protection,so it is particularly important to simulate and study the diseases indoors.In this study,the microbial induced calcium carbonate precipitation(MICP)technology was used to treat the salt efflorescence on the wall with weathered red sandstone soil as the matrix.The change of soil particle size before and after the disease was obtained by laser particle size analysis,and the physical indexes of plaster disruption height,powder volume and salt crust thickness were used to evaluate the degree of development of the disease.Based on the microbial mineralization technology,a mineralized film was generated to inhibit the disease.It is recommended to use the mineralized strain with a concentration of microbial liquid—OD600 greater than 1.5,which has the salt-tolerant performance.After the treatment,the height of plaster disruption decreased by more than 20％,the volume of powder decreased by more than 30％,and the thickness of salt crust decreased by more than 25％.We carried out experimental verifications and feasibility evaluations of the application of biomineralization technology to the treatment of salt efflorescence on the wall of red sandstone grottoes,the results of which could provide scientific pre-research on the promotion and application of green ecological and environmentally friendly technologies for rock wall restoration and reinforcement.关键词
MICP技术/红砂岩风化土/酥碱/病害模拟Key words
MICP technology/Weathered red sandstone soil/Salt efflorescence/Disease simulation分类
社会科学引用本文复制引用
张武,李驰,王晓荣..微生物诱导矿化修复阿尔寨石窟红砂岩壁面酥碱病害试验研究[J].文物保护与考古科学,2024,36(3):28-37,10.基金项目
国家自然科学基金资助项目(51968057)资助,自治区直属高校基本科研业务费项目(JY20220204)资助 （51968057）
