146AS1289.5.8.12007工程用土壤测试方法方法5.8.1.doc

Australian Standard? 《澳大利亚标准》 Methods of testing soils for engineering purposes 《工程建设项目测试土壤的方法》 Method 5.8.1: Soil compaction and density tests—Determination of field density and field moisture content of a soil using a nuclear surface moisture–Density gauge—Direct transmission mode 《方法5.8.1: 土壤压实和密度测试－使用核表面湿度－密度测量计确定土壤的场密度和场含水量－直接传输模式》 1 SCOPE范围 This Standard sets out the method for determining the field density of a soil using a nuclear surface moisture-density gauge in the direct transmission mode of operation. It describes the method for determining the field moisture content of a soil using the same device, but other methods of moisture content determination may also be used. Gauges determine the gross mass per unit volume (field wet density) of the soil and the mass of water per unit volume (field water content) of the soil. Field dry density and moisture content can be calculated from these values. 本《标准》为以直接传输的运作模式使用核表面湿密度测量计确定土壤的场密度制定了方法。它描述了使用同一种装置确定土壤场含水量的方法，但是也有可能用到其他确定含水量的方法。测量计确定了土壤每单位体积的总质量（场湿密度）和土壤每单位体积的水的质量（场含水量）。场干密度和含水量可以从这些值中计算出来。 This method is applicable to soils having not more than 20% by mass of particles retained on the 37.5 mm sieve. Some soils containing variable percentages of chemically bound water or other neutron moderators or absorbers may require the moisture content of the material to be determined in accordance with AS 12 or one of the subsidiary methods, AS 12, AS 12, AS 12 or AS 12. 本方法适用于所包含的保留在37.5 mm筛上的微粒质量不超过20%的土壤。一些包含可变比例的化合水或其他中子慢化剂或吸收剂的土壤可能需要根据AS 12或辅助方法之一，如AS 12, AS 12, AS 12 或 AS 12确定材料的含水量。 Because of the variety of gauges available, this method does not detail the operation of the gauge but refers the operator to the manufacturer’s handbook. 由于有多种测量计，所以本方法没有详细说明测量计的使用，而是让操作员参照制造商手册。 When nuclear gauges are used for density or moisture measurement, the volume of material being assessed is not precisely known; however, reference to the manufacturer’s handbook and current literature may indicate the likely volume. Th