ASTM D1883 PDF

This standard is issued under the fixed designation D; the number 1 This test method is under the jurisdiction of ASTM Committee D18 on Soil and. This standard is issued under the fixed designation D ; the number 1 This test method is under the jurisdiction of ASTM Committee D on Soil and Rock. ASTM D Standard Test Method for CBR (California Bearing Ratio) of Laboratory Compacted Soil. Qty. Model, Description. 1, Choose One.

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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.

Reliable testing depends on many factors; Practice D provides a means of evaluating some of those factors. The criteria for test specimen preparation of self cementing and other materials which gain strength with time must be based on a geotechnical engineering evaluation. As directed by the engineer, self cementing materials shall be properly cured until bearing ratios representing long term service conditions can be measured.

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. In this standard, density is given only in SI units. Users of this method are cautioned that compliance with Practice D does not in itself assure reliable f1883.

After the density has been determined, the unit weight is calculated adtm SI or inch-pound units, or both. Not withstanding statements on precision and bias contained in this Standard: The SI equivalents shown in parentheses may be approximate.

It is beyond the scope of this standard to consider significant digits sstm in analytical methods for engineering design. After the density has been determined, the unit weight is d18833 in SI or inch-pound units, or both.

Density is mass per unit volume whereas unit weight is force per unit volume. In addition they are representative of the significant digits that generally should be retained. Link to Active This link will always route to the current Active version of the standard. In this system, the pound lbf represents a unit of force weightwhile the unit for mass is slugs.

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In this standard, density is given only in SI units. 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.

Reporting of test results in units other than inch-pound units shall not be regarded as nonconformance with this test method. This d188 combines two separate systems of units; that is, the absolute system and the gravitational system. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

In addition they are representative of the significant digits that generally should be retained.

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

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.

California bearing ratio, pavement subgrade, subgrade, pavement subbase, subbase, pavement base course, base course, pavement design, flexible pavements, bearing ratio, CBR. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine f1883 applicability of regulatory limitations prior to use.

ASTM D1883

Density is mass per unit volume whereas unit weight is force per unit volume. 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.

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. Consequently, more trials may be required for these materials to establish a reliable CBR.

The SI units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard.

ASTM D Standard

For Individuals with needing special assistance for disabilities or limited English proficiency Please contact x1883 Title VI specialist at As directed by the client, self-cementing materials shall be properly cured until bearing ratios asm long term service conditions can be measured.

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In this system, the pound lbf represents a unit of force weightwhile the unit for mass is slugs. Soil testing Lab Services: Consequently, more trials may be required for these materials to establish a reliable CBR. Active view current version of standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but x1883 not provided as part of the standard.

This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system.

Consequently, more trials may be required for these materials to establish a reliable CBR. The CBR value obtained in this test forms an integral part of several flexible pavement design methods.

The dry unit weight is usually given as a percentage of maximum dry unit asfm determined by Test Methods D or D However, a large experience database has been developed using this test method for materials for which the gradation has been modified, and satisfactory design methods are in use based on the results of tests using this procedure.

Therefore, the standard unit for mass in this standard is either kilogram kg or gram gor both. It is beyond the scope d188 this standard to consider significant digits used in analytical methods for engineering design. The SI units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard. However, a large experience database has been developed using this test method for materials for which the gradation has been modified, and satisfactory design methods are in use based on the results of tests using this procedure.

It is scientifically undesirable to combine the use of two separate sets of inchpound units within a single standard. Reporting of test results in units other than inch-pound units shall not be regarded as nonconformance with this test method. This standard does not purport to address all of the safety problems, if any, associated with its use.