Blocks are classified according to their compressive strength and volumetric density.　　There are six levels of volumetric density: B, B, B, B, B, and BHandan　　 When laying aerated bricks, the distance between the bottom of the wall needs to be filled with small solid bricks, but the maximum cannot exceed　　There are seven strength levels: A, A, A, A, A, and AMangochi,　　There are six levels of volumetric density: B B, B,HandanAerated block, B, B, and B　　 Block product marking: Mark in the order of product name (code ACB) strength level, bulk density level, product grade, and standard number.　　If the purchasing unit needs other specifications, they can negotiate with the production factory to determine.

　　There are six levels of volumetric density: B, B, B, B, and B　　Starting from January , , Huai&#;an City will phase out fly ash aerated concrete in construction projects throughout the city　　as the main raw materials, with an appropriate amount of aerating agent, regulator, bubble stabilizer added, pouring mixing, static stopping, cutting, and high-pressure steam curing. The unit volume weight of autoclaved aerated concrete blocks is one-third of that of clay bricks, and the insulation performance is - times that of clay bricks, the impermeability performance is more than twice that of clay bricks, and the fire resistance performance is - times that of reinforced concrete. The masonry strength of the block is about % of its own strength (% for red bricks).High quality brand,　　 The following standards contain provisions that constitute the provisions of this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and all parties using this standard should explore the possibility of using the latest versions of the following standards.　　 Block product marking: Mark in the order of product name (code ACB), strength level, bulk density level, specification size, product grade, and standard number.　　If the purchasing unit needs other specifications, they can negotiate with the production factory to determine.

　　 Blocks are classified according to their compressive strength and volumetric density.reform,　　 Blocks are divided into three levels based on dimensional deviation, appearance quality, volumetric density, and compressive strength: excellent product (A), first-class product (B), qualified product (C).　　Aerated blocks are divided into fly ash aerated concrete blocks and sand aerated concrete blocks, among which fly ash autoclaved aerated concrete blocks　　Specification for autoclaved aerated concrete blocks Scope This standard specifies the product classification, technical requirements, test methods, inspection rules, product quality instructions stacking, and transportation of autoclaved aerated concrete blocks.Handan,　　 Blocks are classified according to their compressive strength and volumetric density.　　There are seven strength levels: A, A, A, A, A, A, and A　　as the main raw materials, with an appropriate amount of aerating agent, regulator, bubble stabilizer added,Handan block, and processed through batching, mixing,Handanautoclaved aerated concrete block, pouring, static stopping, cutting, and high-pressure steam curing. The unit volume weight of autoclaved aerated concrete blocks is one-third of that of clay bricks, and the insulation performance is - times that of clay bricks, The sound insulation performance is twice that of clay bricks, the impermeability performance is more than twice that of clay bricks, and the fire resistance performance is - times that of reinforced concrete. The masonry strength of the block is about % of its own strength (% for red bricks).