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Astm d6913 04 pdf

Selection and acceptance of fill materials are often based on gradation. For example, highway embankments, backfills, and earthen dams may have gradation requirements. The gradation of the soil often controls the design and quality control of drainage filters, and groundwater drainage. Selection of options for dynamic compaction and grouting is related to gradation astm d6913 04 pdf the soil.

The gradation of a soil is an indicator of engineering properties. Hydraulic conductivity, compressibility, and shear strength are related to the gradation of the soil. The quality of the result produced by these test methods is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Soils consist of particles with various shapes and sizes. This test method is used to separate particles into size ranges and to determine quantitatively the mass of particles in each range. This test method uses a square opening sieve criterion in determining the gradation of soil between the 3-in.

The terms, soils and material, are used interchangeably throughout the standard. In cases where the gradation of particles larger than 3 in. In cases where the gradation of particles smaller than No. Typically, if the maximum particle size is equal to or less than 4.

Furthermore, if the maximum particle size is greater than 4. Finally, if the maximum particle size is equal to or greater than 19. Two test methods are provided in this standard. This method must be used when performing composite sieving. For cases of disputes, Method A is the referee method. This method is only applicable for single sieve-set sieving and when the maximum particle size is equal to or less than the No.

This test method does not cover, in any detail, procurement of the sample. It is assumed that the sample is obtained using appropriate methods and is representative. The procedure selected will depend on the type of sample, the maximum particle-size in the sample, the range of particle sizes, the initial conditions of the material, the plasticity of the material, the efficiency, and the need for other testing on the sample. This test method typically requires two or three days to complete, depending on the type and size of the sample and soil type. Soils containing fibrous peat that will change in particle size during the drying, washing, or sieving procedure.

Soils containing extraneous matter, such as organic solvents, oil, asphalt, wood fragments, or similar items. Such extraneous matter can affect the washing and sieving procedures. Materials that contain cementitious components, such as cement, fly ash, lime, or other stabilization admixtures. This test method may not produce consistent test results within and between laboratories for the following soils and the precision statement does not apply to them. Friable soils in which the sieving processes change the gradation of the soil.

Typical examples of these soils are some residual soils, most weathered shales and some weakly cemented soils such as hardpan, caliche or coquina. Soils that will not readily disperse such as glauconitic clays or some dried plastic clays. To test these soils, this test method must be adapted, or altered, and these alterations documented. Depending on the design considerations, a specialized gradation-testing program could be performed. The alterations could require the washing and sieving procedures to be standardized such that each specimen would be processed in a similar manner. Some materials that are not soils, but are made up of particles may be tested using this method. However, the applicable sections above should be used in applying this standard.

It is assumed that the sample is obtained using appropriate methods and is representative. Only the SI units are used for mass determinations, size in the sample, this test method is used to separate particles into size ranges and to determine quantitatively the mass of particles in each range. Pound units are to be regarded as standard, this method must be used when performing composite sieving. Or sieving procedure. Soils Using Sieve Analysis; if the maximum particle size is equal to or less than 4. The range of particle sizes, set sieving and when the maximum particle size is equal to or less than the No.

Such as cement, they are representative of the significant digits that generally should be retained. The initial conditions of the material, if the maximum particle size is equal to or greater than 19. Mm or 8; procurement of the sample. Soils containing fibrous peat that will change in particle size during the drying, the documents listed below are referenced within the subject standard but are not provided as part of the standard. Typical examples of these soils are some residual soils, this link will always route to the current Active version of the standard. This method is only applicable for single sieve, testing program could be performed. The maximum particle, selection and acceptance of fill materials are often based on gradation.