CAJ | 학술논문

西安城墙的墙体常大面积析出白色盐粉,这种现象被称为＂泛碱＂。大量出现的泛碱现象不但大大影响西安城墙的整体美感,而且会降低砖材的力学强度造成脱落、粉化等病害,甚至对墙体的稳定性和安全性都造成威胁。为了了解其产生的原因,本工作通过X射线衍射分析方法对泛碱物质进行分析。分析结果表明,泛碱主要成分为NaCl、NaNO3、Na2SO4.10H2O、无水芒硝。结合对西安地区环境地下水和降雨等资料的调查,认为＂泛碱＂的主要原因为原材料以及地下水、雨水等引入的可溶盐。针对这一现象,提出了用＂多层纸张贴敷法＂除去导致砖石表面酥粉泛碱的可溶盐,再后期杀菌封护的保护方案。
서안성장적장체상대면적석출백색염분,저충현상피칭위＂범감＂。대량출현적범감현상불단대대영향서안성장적정체미감,이차회강저전재적역학강도조성탈락、분화등병해,심지대장체적은정성화안전성도조성위협。위료료해기산생적원인,본공작통과X사선연사분석방법대범감물질진행분석。분석결과표명,범감주요성분위NaCl、NaNO3、Na2SO4.10H2O、무수망초。결합대서안지구배경지하수화강우등자료적조사,인위＂범감＂적주요원인위원재료이급지하수、우수등인입적가용염。침대저일현상,제출료용＂다층지장첩부법＂제거도치전석표면소분범감적가용염,재후기살균봉호적보호방안。
Efflorescence often appears on the city wall of Xi＇an, forming large areas of white crystalline salts. Efflorescence causes cosmetic damage and can reduce the mechanical strength of the bricks, which leads to peeling and powdering, and even threatens the stability and safety of the wall. To investigate the cause of efflorescence, the crystalline salt was analyzed using XRD. The results showed that the major components are NaCl, NaNO3, NazSO4·10H2O, and Na2SO4. Based on groundwater and rainfall data for the Xi＇an area, the major cause of efflorescence is the introduction of soluble salts from construction materials, groundwater and rainfall. A conservation method against efflorescence was developed, first removing the surface salts with multiple layers of paper, following by sterilization and insulation.