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    ASTM D4318-05

    Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils
    • 발행일 : 2005-03-01
    • 발행기관 : ASTM
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분야 04.08 : 토양, 석재 (Ⅰ)
적용범위

1.1 These test methods cover the determination of the liquid limit, plastic limit, and the plasticity index of soils as defined in Section on Terminology.

1.2 Two methods for preparing test specimens are provided as follows: Wet preparation method, as described in . Dry preparation method, as described in . The method to be used shall be specified by the requesting authority. If no method is specified, use the wet preparation method.

1.2.1 The liquid and plastic limits of many soils that have been allowed to dry before testing may be considerably different from values obtained on non-dried samples. If the liquid and plastic limits of soils are used to correlate or estimate the engineering behavior of soils in their natural moist state, samples should not be permitted to dry before testing unless data on dried samples are specifically desired.

1.3 Two methods for determining the liquid limit are provided as follows: Method A, Multipoint test as described in Sections . Method B, One-point test as described in Sections . The method to be used shall be specified by the requesting authority. If no method is specified, use Method A.

1.3.1 The multipoint liquid limit method is generally more precise than the one-point method. It is recommended that the multipoint method be used in cases where test results may be subject to dispute, or where greater precision is required.

1.3.2 Because the one-point method requires the operator to judge when the test specimen is approximately at its liquid limit, it is particularly not recommended for use by inexperienced operators.

1.3.3 The correlation on which the calculations of the one-point method are based may not be valid for certain soils, such as organic soils or soils from a marine environment. It is strongly recommended that the liquid limit of these soils be determined by the multipoint method.

1.4 The plastic limit test is performed on material prepared for the liquid limit test.

1.5 The liquid limit and plastic limit of soils (along with the shrinkage limit) are often collectively referred to as the Atterberg limits. These limits distinguished the boundaries of the several consistency states of plastic soils.

1.6 The composition and concentration of soluble salts in a soil affect the values of the liquid and plastic limits as well as the water content values of soils (see Method D 2216). Special consideration should therefore be given to soils from a marine environment or other sources where high soluble salt concentrations may be present. The degree to which the salts present in these soils are diluted or concentrated must be given careful consideration.

1.7 The methods described herein are performed only on that portion of a soil that passes the 425-m (No. 40) sieve. Therefore, the relative contribution of this portion of the soil to the properties of the sample as a whole must be considered when using these tests to evaluate properties of a soil.

1.8 The values stated in acceptable metric units are to be regarded as the standard, except as noted below. The values given in parentheses are for information only.

1.8.1 The standard units for the resilience tester covered in are inch-pound, not metric. The metric values given are for information only.

1.9 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.

국제분류(ICS)코드
페이지수 16
Edition 05

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM D4318-17e1상세보기 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 2017-06-01 표준
2 ASTM D4318-17상세보기 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 2017-06-01 구판
3 ASTM D4318-10e1상세보기 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 2010-01-15 구판
4 ASTM D4318-10상세보기 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 2010-01-15 구판
5 ASTM D4318-05상세보기 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 2005-03-01 구판
6 ASTM D4318-00상세보기 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils 2000-06-10 구판

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