Ceramic material taken from walls of the church of St. Mary (Spain) was studied. The elemental composition of the studied material showed an increased carbon content (15.42%), indicating that fuel was introduced into the raw material and contributed to uniform sintering and porosity formation inside the ceramic sample. Three types of pores were found most often in the studied sample: slit-shaped, isometric, and oval-shaped. The isometric pores were found in the form of channels. The presence of isometric pores and oval closed porosity in the studied material gave it mechanical strength. The increased CaO content (11.92%) in the sample contributed to the formation of anorthite, which increased the strength of the products.

研究了从圣玛丽教堂（西班牙）的墙壁上获取的陶瓷材料。被研究材料的元素组成显示出增加的碳含量（15.42％），表明燃料被引入到原材料中，并有助于在陶瓷样品内部均匀烧结和形成孔隙。在研究的样品中，最常见的是三种类型的孔：狭缝形，等距形和椭圆形。等轴测孔以通道的形式发现。研究材料中等距孔和椭圆形闭孔的存在赋予了它机械强度。样品中CaO含量的增加（11.92％）促进了钙长石的形成，从而增加了产品的强度。