Gypsum block 

 1 Scope This standard specifies the technical requirements of gypsum block, experimental methods, inspection rules, marking, transportation and storage. This standard is used for construction of non-load bearing masonry walls with a gypsum block. 2 Definitions The following definitions are used in this standard. 2.1 gypsum block: the construction gypsum as the main raw material, add water, stirring, pouring molding and drying gypsum products made of lightweight construction. Allowed to join the production of fiber-reinforced material or lightweight aggregate, can be added to foam. 2.2 Surface: gypsum block wall on the visible part. 2.3 Length: gypsum block surface parallel to the edge of the long side dimension. 2.4 Height: gypsum block edge surface parallel to the short side of size. 2.5 Thickness: gypsum block the vertical distance between the two surfaces. Category 3.1 Category 3 3.1.1 according to the structure of gypsum block is divided into two categories. 3.1.1.1 gypsum hollow block with a horizontal or vertical holes in prefabricated blocks, code-named K. 3.1.1.2 Gypsum block no prefabricated hollow solid block, code-named S. 3.1.2 The plaster according to the source is divided into two categories. 3.1.2.1 Natural gypsum block as raw material with natural gypsum blocks made of brick, code T. 3.1.2.2 Chemical gypsum block chemical building blocks made of gypsum as raw material, code-named H. 3.1.3 block moisture resistance is divided into two categories. 3.2.3.1 Ordinary gypsum block moisture in the molding process without making the block processing, code-named P. 3.1.3.2 moisture-proof gypsum block moisture in the molding process by treatment with a moisture-proof performance of the block, Code F 

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