Astm d 1883

It is scientifically undesirable to combine the use of two separate sets of inchpound units within a single standard. Historical Version s - view previous versions of standard. This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. Request Quote Client Login. The dry unit weight specified is normally the minimum percent compaction allowed by the using agencys field compaction specification.

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Link to Active This link will always route to the current Active version of the standard. For applications where the effect of compaction water content on CBR is unknown or where it is desired to account for its effect, the CBR is determined for a range of water content, usually the range of water content permitted for field compaction by using agencys field compaction specification. The dry unit weight is usually given as a percentage of maximum dry unit weight determined by Test Methods D or D In this standard, density is given only in SI units.

It is scientifically undesirable to combine the use of two separate sets of inchpound units within a single standard. Request Quote Client Login. Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.

As directed by the engineer, self cementing materials shall be properly cured until bearing ratios representing long term service conditions can be measured. For more information, contact: Density is mass per unit volume whereas unit weight is force per unit volume.

Therefore, the standard unit for mass in this standard is either kilogram kg or gram gor both. The dry unit weight is usually given as a percentage of maximum dry unit weight determined by Test Methods D or D In addition they are representative of the significant digits that generally should be retained.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system.

After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both.

The CBR value obtained in this test forms an integral part of several flexible pavement design methods.

For applications where the effect of compaction water content of CBR is small, such a adtm, coarse-grained materials, or where an allowance is made for the effect of differing compaction water contents in the design procedure, astk CBR may be determined at the optimum water content of a specified compaction effort.

This test method is used to evaluate the potential strength of subgrade, subbase, and base course material, including recycled materials for use in road and airfield pavements. It is the ashm of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

In addition they are representative of the significant digits that generally should be retained. Reporting of test results in units other than inch-pound units shall not be regarded as nonconformance with this test method. Reporting of test results in units other than inch-pound units shall not be regarded as nonconformance with this test method. As directed by the client, self-cementing 188 shall be properly cured until bearing ratios representing long term service conditions can be measured.

It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

However, a large experience database has been developed using this test method for materials for which the gradation has been modified, and satisfactory 188 methods are in use based on the results of tests using this procedure. In this system, the pound lbf represents a unit of force weightwhile the unit for mass is slugs. While traditionally this method of specimen preparation has been used to avoid the error inherent in testing materials containing large particles in the CBR test apparatus, the modified material may have significantly different strength properties than the original material.

Active view current version of standard. The CBR value obtained in this test forms an integral part of several flexible pavement design methods. Density is mass per unit volume whereas unit weight is force per unit volume. Consequently, more trials may be required for these materials to establish a reliable CBR.

Link to Active This link will always route to the current Active version of the standard. The quality of the results produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Therefore, the standard unit for mass in this standard is either kilogram kg or gram gor both. The criteria for test specimen preparation of self cementing and other materials which gain strength with time must be based on a axtm engineering evaluation.

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