1.1本规范涵盖由蒸压加气混凝土制成的实心非承重和承重预制混凝土墙单元。预制蒸压加气混凝土（AAC）是一种基于硅酸钙水合物的水泥制品，其中通过加入导致宏观孔隙的药剂来实现低密度，并进行高压蒸汽养护。预制蒸压加气混凝土墙体单元为大尺寸实心矩形棱柱体，采用薄层砂浆铺设。本规范涵盖的安装装置应使用AAC制造商认可的涂层材料进行保护，以防直接暴露在湿气中。 1.2生产预制蒸压加气混凝土所用的原材料为硅酸盐水泥、石英砂、水、石灰、石膏或硬石膏，以及产生宏观孔隙的药剂。 用作原料的石英砂可由除砂以外的硅质细骨料代替，通常在使用前磨成细粉。粉煤灰可用作砂替代物。将配料的原材料彻底混合在一起，形成泥浆。泥浆被浇铸到钢模中。由于泥浆中发生的化学反应，体积膨胀。在凝固之后和硬化之前，将质量机械切割成各种尺寸的单位。然后在高压釜中对装置进行压力蒸汽固化，材料在高压釜中转化为硬质硅酸钙。 1.3以英寸-磅为单位的数值应视为标准值。括号中给出的值仅供参考。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 见第8节、第9节和第10节。

1.1 This specification covers solid nonload-bearing and load-bearing precast concrete wall units made from autoclaved aerated concrete. Precast autoclaved aerated concrete (AAC) is a cementitious product based on calcium silicate hydrates in which low density is attained by the inclusion of an agent resulting in macroscopic voids and is subjected to high-pressure steam curing. The precast autoclaved aerated concrete wall units are large-size solid rectangular prisms, which are to be laid using thin-bed mortar. Installed units covered by this specification shall be protected against direct exposure to moisture using a coating material accepted by the AAC manufacturer. 1.2 The raw materials used in the production of precast autoclaved aerated concrete are portland cement, quartz sand, water, lime, gypsum or anhydrite, and an agent resulting in macroscopic voids. The quartz sand used as a raw material may be replaced by a siliceous fine aggregate other than sand, and usually is ground to a fine powder before use. Fly ash may be used as a sand replacement. The batched raw materials are mixed thoroughly together to form a slurry. The slurry is cast into steel molds. Due to the chemical reactions that take place within the slurry, the volume expands. After setting, and before hardening, the mass is machine cut into units of various sizes. The units then are steam-cured under pressure in autoclaves where the material is transformed into a hard calcium silicate. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See Section 8, Section 9, and Section 10.