13.080.40 土壤的水文特性 标准查询与下载



共找到 147 条与 土壤的水文特性 相关的标准,共 10

Soil quality - Determination of soil water content as a volume fraction on the basis of known dry bulk density - Gravimetric method; Technical Corrigendum 1

ICS
13.080.40
CCS
B11
发布
2009-05
实施

Soil quality. Determination of soil water content as a volume fraction using coring sleeves. Gravimetric method

ICS
13.080.40
CCS
发布
2009
实施
2011-01-01

Standard Test Methods for Determination of the Soil Water Chararcteristic Curve for Desorption Using a Hanging Column, Pressure Extractor, Chilled Mirror Hygrometer, and/or Centrifuge

ICS
13.080.40
CCS
发布
2008-09-01
实施

The water content of a soil is used throughout geotechnical engineering practice both in the laboratory and in the field. The use of Test Method D 2216 for water content determination can be time consuming and there are occasions when a more expedient method is desirable. The use of a microwave oven is one such method. The principal objection to the use of the microwave oven for water-content determination has been the possibility of overheating the soil, thereby yielding a water content higher than would be determined by Test Method D 2216. While not eliminating this possibility, the incremental drying procedure described in this test method will minimize its effects. Some microwave ovens have settings at less than full power, which can also be used to reduce overheating. The behavior of a soil, when subjected to microwave energy, is dependent on its mineralogical compositions, and as a result no one procedure is applicable for all types of soil. Therefore, the procedure recommended in this test method is meant to serve as a guide when using the microwave oven. This test method is best suited for minus No. 4 sized material. Larger size particles can be tested; however, care must be taken because of the increased chance of particle shattering. The use of this method may not be appropriate when highly accurate results are required, or the test using the data is extremely sensitive to moisture variations. Due to the localized high temperatures that the specimen is exposed to in microwave heating, the physical characteristics of the soil may be altered. Degregation of individual particles may occur, along with vaporization or chemical transition. It is therefore recommended that samples used in this test method not be used for other tests subsequent to drying. Note 18212;The quality of the results produced by this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing. Users of this test method are cautioned that compliance with Practice D 3740 does not in itself ensure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method outlines procedures for determining the water (moisture) content of soils by incrementally drying soil in a microwave oven. 1.2 This test method can be used as a substitute for Test Method D 2216 when more rapid results are desired to expedite other phases of testing and slightly less accurate results are acceptable. 1.3 When questions of accuracy between this test method and Test Method D 2216 arise, Test Method D 2216 shall be the referee method. 1.4 This test method is applicable for most soil types. For some soils, such as those containing significant amounts of halloysite, mica, montmorillonite, gypsum or other hydrated materials, highly organic soils, or soils in which the pore water contains dissolved solids (such as salt in the case of marine deposits), this test method may not yield reliable water content values. 1.5 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this test method. 1.6 Refer to Practice D 6026 for guidance concerning the use of significant figures. This is especially important if the water content will be used to calculate other relationships such as moist mass to dry mass or vice versa, wet unit weight to dry unit weight or vice vers......

Standard Test Method for Determination of Water (Moisture) Content of Soil by Microwave Oven Heating

ICS
13.080.40
CCS
B11
发布
2008
实施

本标准规定了农田灌溉水中苯、甲苯、二甲苯最大限量要求、采样方法和试验方法。 本标准适用于以地面水、地下水和处理后的城市污水作水源的农田灌溉用水。本标准不适用于医药、生物制品、化学试剂、农药、石油炼制、焦化和有机化工等处理后的工业废水进行灌溉。

Maximum Limits of Benzene, Toluene and Xylene for Irrigation Water Quality

ICS
13.080.40
CCS
B04
发布
2007-04-17
实施
2007-07-01

이 규격은 물의 층류를 측정할 수 있는 고정 벽체 투과 측정계를 이용하여 정수위법으로입

Soil quality-Determination of hydraulic conductivity of saturated porous materials using a rigid-wall permeameter

ICS
13.080.40
CCS
Z18
发布
2006-10-27
实施
2006-10-27

이 규격은 지하수 오염원으로서의 부지, 토양, 토양 물질의 역할과 오염 물질 이동, 분해,

Soil quality-Characterization of soil related to groundwater protection

ICS
13.080.40
CCS
Z18
发布
2006-10-27
实施
2006-10-27

Soil quality-Characterization of soil related to groundwater protection

ICS
13.080.40
CCS
发布
2006-10-27
实施

Soil quality - Principles of the determination of the water content by Time Domain Reflectometry (TDR) and Time Domain Transmissometry (TDT)

ICS
13.080.40
CCS
B11
发布
2006-10-01
实施

1.1 This test method covers hydraulic conductivity compatibility testing of saturated soils in the laboratory with aqueous solutions that may alter hydraulic conductivity (for example, waste related liquids) using a flexible-wall permeameter. A hydraulic conductivity test is conducted until both hydraulic and chemical equilibrium are achieved such that potential interactions between the soil specimen being permeated and the aqueous solution are taken into consideration with respect to the measured hydraulic conductivity.1.2 This test method is applicable to soils with hydraulic conductivities less than approximately 1 10-8 m/s.1.3 In addition to hydraulic conductivity, intrinsic permeability can be determined for a soil if the density and viscosity of the aqueous solution are known or can be determined.1.4 This test method can be used for all specimen types, including undisturbed, reconstituted, remolded, compacted, etc. specimens.1.5 A specimen may be saturated and permeated using three methods. Method 1 is for saturation with water and permeation with aqueous solution. Method 2 is for saturation and permeation with aqueous solution. Method 3 is for saturation with water, initial permeation with water, and subsequent permeation with aqueous solution.1.6 The amount of flow through a specimen in response to a hydraulic gradient generated across the specimen is measured with respect to time. The amount and properties of influent and effluent liquids are monitored during the test.1.7 The hydraulic conductivity with an aqueous solution is determined using procedures similar to determination of hydraulic conductivity of saturated soils with water as described in Test Methods D 5084. Several test procedures can be used, including the falling headwater-rising tailwater, the constant-head, the falling headwater-constant tailwater, or the constant rate-of-flow test procedures.1.8 The standard units for the hydraulic conductivity values are the SI units, unless other units are specified. Hydraulic conductivity has traditionally been expressed in cm/s in the U.S., even though the official SI unit for hydraulic conductivity is m/s.1.9 This standard contains a Hazards section related to using hazardous liquids (Section 7).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.

Standard Test Method for Hydraulic Conductivity Compatibility Testing of Soils with Aqueous Solutions

ICS
13.080.40
CCS
发布
2006-05-01
实施

Soil quality-Determination of unsaturated hydraulic conductivity and water-retention characteristic-Wind’s evaporation method

ICS
13.080.40
CCS
发布
2005-12-28
实施

이 규격은 유동 벽체 투과 측정계를 이용하여 포화된 다공성 물질의 수리 전도도를 실험 실에

Soil quality-Determination of hydraulic conductivity of saturated porous materials using a flexible wall permeameter

ICS
13.080.40
CCS
B11
发布
2005-12-28
实施
2005-12-28

Soil quality-Determination of hydraulic conductivity of saturated porous materials using a flexible wall permeameter

ICS
13.080.40
CCS
发布
2005-12-28
实施

This International Standard specifies a test method, which covers the determination of the hydraulic conductivity by a constant-head method for the laminar flow of water through granular soils (sand and gravel). The procedure is to establish representative values of the hydraulic conductivity of granular soils that may occur in natural deposits as placed in embarkments, or when used as base courses under pavements. In order to limit consolidation influences during testing, this procedure is limited to disturbed granular soils containing not more than 10% soil passing the 75- um sieve.

Soil quality - Determination of hydraulic conductivity of saturated porous materials using a rigid wall permeameter

ICS
13.080.40
CCS
发布
2005-05-27
实施
2005-05-27

This International Standard specifies the determination of the hydraulic conductivity of granular soils (e.g. sand and gravel) using a constant-head method involving a rigid-wall permeameter to measure the laminar flow of water. The procedure establishes representative values of the hydraulic conductivity of granular soils that can occur in natural deposits as placed in embankments, or when used as base courses under pavements. In order to limit consolidation influences during testing, this procedure is applicable only to disturbed granular soils containing not more than 10 % soil passing a 75-μm sieve. This procedure is applicable to the measurement of hydraulic conductivity of compacted samples of sands and gravels containing little or no silt, where flow along the rigid wall of the permeameter has no practical implications on the test results. This International Standard is not applicable to silt and clay, where seepage/flow at the boundaries is not acceptable.

Soil quality - Determination of hydraulic conductivity of saturated porous materials using a rigid-wall permeameter

ICS
13.080.40
CCS
Z18
发布
2005-03
实施

Soil quality-Determination of water content in the unsaturated zone(Neutron depth probe method)

ICS
13.080.40
CCS
发布
2005-02-28
实施

이 규격은 부피를 기준으로 한 수분 함량을 측정하는 중량법에 대하여 규정한다. 이 방법은

Soil quality-Determination of soil water content calculatedon a volume basis(Gravimetric method)

ICS
13.080.40
CCS
B13
发布
2005-02-28
实施
2005-02-28

이 규격은 장력계를 사용하며 포화, 불포화 상태의 토양에서 공극수 압력을 측정하는 방법에

Soil quality-Determination of pore water pressure-Tensiometer method

ICS
13.080.40
CCS
B11
发布
2005-02-28
实施
2005-02-28

이 규격은 중성자 수분 측정기를 사용하여 현장에서 불포화대의 토양 수분 함량을 측정하는 원

Soil quality-Determination of water content in the unsaturated zone(Neutron depth probe method)

ICS
13.080.40
CCS
B11
发布
2005-02-28
实施
2005-02-28

이 규격은 토양의 수분 보유 특성을 측정하기 위한 실험실 규모의 방법에 대하여 규정한다.

Soil quality-Determination of the water retention characteristic(Laboratory method)

ICS
13.080.40
CCS
Z18;B10
发布
2005-02-28
实施
2005-02-28



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