13AS1012.4.3-1999-混凝土试验方法方法4.3概要.docVIP

Australian StandardTM 澳大利亚标准TM Methods of testing concrete 混凝土试验方法 Method 4.3: Determination of air content of freshly mixed concrete— Measuring air volume when concrete is dispersed in water 方法4.3：混凝土拌合物中空气含量的测定方法——当混凝土散布在水中时，测定空气体积 1 SCOPE 1 适用范围 This Standard sets out the method for determining the air content of freshly mixed concrete using the volumetric method. 本《标准》规定了利用容积法测定混凝土拌合物空气含量的方法。 This Standard is suitable for concrete made with any type of aggregate, whether it be dense, cellular or lightweight. 本《标准》适用于任何类型骨料所拌合成的混凝土（无论是密实型、蜂窝型还是轻量型均可）。 NOTES: 1 This Standard may involve hazardous materials, operations, and equipment. The Standard does not purport to address all of the safety problems associated with its use. The user of this Standard should establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1本《标准》可能涉及危险性材料、操作和设备。本《标准》的主旨不在于解决所有与使用相关的安全问题。本《标准》的使用者有责任建立适当的安全和健康保护措施，并且在使用之前，应确定相关标准限制的适用范围。 2 Data on the precision of the test method were not available at the time of publication. This information will be included when available. 2 在本《标准》出版时，尚没有关于试验方法精度的相关资料。若能够掌握此类资料，则今后将在本《标准》中予以增补。 2 REFERENCED DOCUMENTS 2 参考文件 The following documents are referred to in this Standard: 在本标准中参考了下列文件： AS 《澳大利亚标准》 1012 Methods of testing concrete 1012 混凝土试验方法 1012.1 Method 1: Sampling of fresh concrete 1012.1 方法1：混凝土拌合物取样 1012.2 Method 2: Preparation of concrete mixes in the laboratory 1012.2 方法2：在实验室中配制混凝土混合物 1012.4.1 Method 4.1: Determination of air content of freshly mixed concrete—Measuring reduction in concrete volume with increased air pressure 1012.4.1 方法4.1：混凝土拌合物中空气含量的测定方法——在气压增高的条件下测定混凝土体积的减少量 3 PRINCIPLE 3 原则 The air content of freshly mixed concrete is determined by measuring the volume of water required to fill the air voids in the concrete. 通过测定填充满混凝土中气孔所需水的体积，从而可以测定混凝土拌合物中的空气含量。 4 APPARATUS 4 仪器 4.1 Volumetric air meter 4.1空气体积计量仪 4.1.1 General 4.1.1 概述 The air meter used shall co