• 中文主题词：试验 ; 施工材料 ; 建筑 ; 泥炭 ; 体密度 ; 土壤
• 标准号：ASTM D4531-1986(2002)
• 发布日期：1986
• 英文题名：Standard Test Methods for Bulk Density of Peat and Peat Products
• 英文主题词：bulk density ; core sampling ; paraffin-wax displacement method ; peat ; peat products
• 标准状态：现行
• 发布单位：US-ASTM
• 国际标准分类号：65.080 (Fertilizers)
• 载体形态：3P.;A4
• 中国标准分类号：D20
• 国别：美国材料与试验协会

These test methods provide uniform procedures for determining the bulk density of in situ peat and processed peat products. The bulk density is of use in the calculation of in situ stresses for engineering analysis and in quantifying the amount of material present when considering peat as a resource. In the latter case, it is necessary to consider the moisture condition for which the bulk density was determined; a more useful parameter to consider may well be the dry density, x03C1;_d.

1.1 These test methods cover the determination of the bulk density of both peat in its natural state and peat products (Note 1). These test methods consist of defining a volume of peat and determining the mass of that specific volume. The difference in the respective methods is in the procedures employed to determine the peat volume.

Note 18212;Test Method D 2978 is used for specifying the volume represented by a quantity of loose processed peat or the volume of a peat bale.

1.2 Method A8212;This method, the core method, covers the determination of the bulk density of an undisturbed core of peat taken with a piston sampler or other suitable core sampler (Sections 6 and 7).

1.3 Method B8212;This method, the paraffin wax method, covers the determination of the bulk density of undisturbed clods or irregular pieces of wet peat and compressed peat products (Sections 8 and 9).

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.