GSO ISO/TS 17892-2:2014由GSO 发布于 2014-08-06。
GSO ISO/TS 17892-2:2014在国际标准分类中归属于: 13.080.20 土壤的物理特性。
GSO ISO/TS 17892-2:2014 测试和验证土壤特性 土壤实验室测试 第2部分:测定土壤细粒的密度的最新版本是哪一版?
最新版本是 GSO ISO/TS 17892-2:2014 。
This document specifies methods of test for the determination of the bulk and dry density of intact soil or rock within the scope of the geotechnical investigations according to prEN 1997-1 and prEN 1997-2. The bulk density of a soil is useful in the determination of the in-situ overburden stresses at various depth (geostatic stresses). Furthermore, bulk and dry density can qualitatively describe the mechanical characteristics of a soil via empirical relationships which are to be found in the technical literature. Such relationships should be used only as guidelines and should be supplemented by direct measurements of the mechanical characteristics. This document describes three methods: a) linear measurements method; b) immersion in water method; c) fluid displacement method. The linear measurement method is suitable for the determination of the density of a specimen of cohesive soil of regular shape, including specimens prepared for other tests. The specimens used are normally in the form of either rectangular prisms or straight cylinders. The immersion in water method covers the determination of the bulk density and dry density of a specimen of natural or compacted soil by measuring its mass in air and its apparent mass when suspended in water. The method is employable whenever lumps of material of suitable size can be obtained. The fluid displacement method covers the determination of the bulk density and dry density of a specimen of soil by measuring mass and displacement of water or other appropriate fluid after immersion. The method is employable whenever lumps of material of suitable size can be obtained.
1、土模是土壤的电子数据和用户输入的土壤物理数据的结合,是测试一块类似土壤特性区土壤参数的基础。 2、作土模时,需要用EDG在不同测试点采集电子信号(这种土模的测试点被称为土壤测试) 每个测试点都需要采集一个电子信号,同时需要用砂锥试验得到该处土壤的湿密度、干密度和含水率等物理特性。再通过实验室测得土壤的大干密度,然后把这些数据输入到仪器中,这样电子数据就会和物理数据关联起来了。 ...
评价指标体系建设是测土配方施肥体系的重要环节,是筛选和验证土壤养分测试方法的主要手段。...
土壤含水量测定仪/土壤湿度密度(一) 烘干法 烘干法是测定含水量的标准方法,适用于粘质土、粉质土、砂类土和有机质土类。 1.仪器设备(1)烘箱:可采用电热烘箱或温度能保持105℃-110℃的其他能源烘箱,也可用红外线烘箱。(2)天平:感量0.01g。(3)其他:干燥器、称量盒等。2.试验步骤(1)取具有代表性试样,细粒土15-30g,砂类土、有机土为50g,放人称量盒内,立即盖好盒盖,称质量。...
颗粒分离实验 使用实验室设备评价颗粒分离技术的试验,根据以下方面的差异分离土壤的不同部分: 颗粒大小,通过一系列筛子进行湿筛(表2) 沉降速度,使用实验室设备进行旋流分级 比重,使用不同密度的液体进行上浮和下沉测试 表面化学性质,实验室泡沫浮选试验 磁性,在不同磁场强度下的分离 用实验室磨、擦设备也可以评估去除颗粒表面涂层的效果,这些颗粒本来是“干净的”。表2....
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