蛎灰(也称作贝壳灰、蜊灰等)是煅烧贝壳等海洋生物得的以氧化钙为主要成分的材料。蛎灰作为中国古代沿海地区常用的建筑凝胶材料和建筑装饰材料具有悠久的历史。本文以福建漳州某处蛎灰烧制炉为例,对蛎灰制作的传统工艺进行了探究。利用X射线衍射(XRD)、X射线荧光(XRF)和扫描电镜对取自古代建筑上蛎灰样品的矿物成分、化学成分和微观形貌进行测试,得到了蛎灰的基本岩石学性质。现场考察及测量表明蛎灰的抗风化能力较强。相关研究为蛎灰在今后古建筑遗址中的保护应用提供了科学依据。 Oyster ash (also referred to as shell ash, clam ash, etc.) is a material mainly composed of calcium oxide, which is obtained from marine organisms such as calcined shells. Oyster ash as the ancient Chinese coastal areas commonly used in building gel materials and building decoration materials has a long history. In this paper, an oyster ash firing furnace in Zhangzhou, Fujian Province is taken as an example to study the traditional process of making oyster ash. The basic petrographic properties of oyster ash were obtained by XRD, XRF and SEM. The mineral composition, chemical composition and microstructure of the oyster ash samples collected from ancient buildings were tested. Onsite inspection and measurement showed that oyster ash is more resistant to weathering. The related research provides a scientific basis for the protection and application of oyster ash in ancient buildings and ruins.