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矽酸盐是石灰和各种含矽材料經过湿热处理而成的,当用砂作为含矽材料时又可称作灰砂材料(制品)。矽酸盐的历史是此較悠久的,早在1854年法国就公布了一种生产灰砂磚的方法,是把(?)和石灰如水混合,压制成型。用这种方法生产的灰砂磚强度下大,而且很容易为水浸蝕,所以不久就停止采用。1880年德国学者米哈爱利斯所提出的蒸压法获得了專利,这种方法就是灰砂磚成型后放在几个大气压的飽和蒸汽中进行养护,强度大大提高。
Phosphonate is made of lime and various lanthanum-containing materials that have been subjected to a wet heat treatment. When sand is used as a lanthanum-containing material, it can also be referred to as ash sand material (product). The history of tannins is relatively old. As early as 1854, France announced a method for producing sand-lime bricks by mixing (?) lime with water and pressing. The sand-lime brick produced by this method has a large strength and is easily eroded by water, so it will not be used soon. In 1880, the autoclave method proposed by the German scholar Mihaeliss was patented. This method is to improve the strength of lime-sand bricks after they are molded and placed in saturated steam at several atmospheric pressures.