古代砖砌墙体多用灰浆作为黏结材料,其老化失效是墙体损毁的重要原因之一。本文应用红外热成像仪、X-射线荧光分析仪、X-射线衍射仪和离子色谱仪等,分析了北京市延庆地区明代岔道城遗址灰浆及其保存环境状况,通过模拟老化试验探讨了影响其长期保存的主要因素,为此类砖砌墙体保护与维修提供 Ancient brick wall mortar as a bonding material, the aging failure is one of the important reasons for the wall damage. In this paper, we use the infrared thermal imager, the X-ray fluorescence analyzer, the X-ray diffraction and the ion chromatograph to analyze the mortar and the preservation environment of the Chengde fork city site in the Ming Dynasty in Yanqing area, Beijing. By simulating the aging test, Long-term preservation of the main factors for the protection and repair of such brick walls to provide