The Influence of Two Natural Reinforcement Fibers on the Hygrothermal Properties of Earthen Plasters in Mogao Grottoes of China

作     者：Wenbei Bi Zengfeng Yan Huan Zhao Lixin Sun Xudong Wang Zhengmo Zhang 

作者机构：School of ArchitectureXi’an University of Architecture and TechnologyXi’an710055China China Academy of Building ResearchBeijing100044China Conservation InstituteDunhuang AcademyDunhuang736200China School of Engineering and MechanicsLanzhou UniversityLanzhou730000China 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)

年 卷 期：2020年第8卷第12期

页      面：1691-1710页

核心收录：

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

基　　金：This project was supported by the National Natural Science Foundation of China(Projects No.51378412) China State Administration of Cultural Heritage(Project No.20110308) 

主　　题：Earthen plasters natural reinforced fibers hygrothermal properties dry thermal conductivity water vapor permeability sorption isotherms 

摘      要：Murals in Mogao Grottoes consist of three parts:support layer,earthen plasters and paint *** earthen plasters play a key role in the preservation of *** is a mixture of Dengban soil,sand,and plant *** different natural fibers,hemp fiber and cotton fiber,were reinforced to earthen plasters in the same percentage to evaluate the influence on hygrothermal *** two types of earthen plasters were studied:one containing hemp fiber in the fine plaster(HFP)and the other containing cotton fiber in the fine plaster(CFP).Specific heat capacity,dry thermal conductivity,water vapor permeability,and sorption isotherms were *** results showed that the difference between two natural fibers has much more impact on the hygric properties(water vapor permeability and sorption isotherms)of earthen plasters than on their thermal performance(specific heat capacity and dry thermal conductivity).The CFP with higher density has higher thermal conductivity than the HFP with lower *** no significant differences of specific heat capacity were *** with HFP,CFP used in murals can reduce the rate of water transfer and prevent salt from transferring water to the mural *** overall findings highlight that all these features of CFP are beneficial to the long-term preservation of mur*** study of the earthen plasters in Mogao Grottoes is of general significance,and the measured properties can be used to obtain coupled heat and moisture analysis of the earthen plasters and to dissect the degradation mechanism of murals.