ASTM D 1557 PDF

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This standard is issued under the fixed designation D; the number . 1 These test methods are under the jurisdiction of ASTM Committee D18 on Soil. D - 00 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort ( ft-lbf/ft 3 PDF, 10, $, ADD TO CART. Designation: D – 02e1 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56, ft-lbf/ft3 (2, kN-m/m3))1.


Astm D 1557 Pdf

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ASTM D - pdf - Download as PDF File .pdf), Text File .txt) or read online . Slide 6 of Revised 02/ SOIL MECHANICS. Soil Compaction. Test. STANDARD. ASTM D/AASHTO T MODIFIED. ASTM D/ AASHTO. This standard is issued under the fixed designation D ; the number 1 This standard is under the jurisdiction of ASTM Committee D18 on Soil and.

The specimen contact the diameter exceeds 2. The rammer shall operate system to assume that the mass of the rammer is equal to its mass in such a manner that the vertex of the sector is positioned at determined using either a kilogram or pound balance and 1 lbf is equal to the center of the specimen. If adjustments or repairs are ments of Specification D for a balance of 1-g readability. The total length Determine the water content increments of water.

Calibration having water contents such that they bracket the estimated 7.

ASTM D

A specimen having a water content other occurrences that might affect the test results, at intervals close to optimum should be prepared first by trial additions of not exceeding test specimens, or annually, whichever water and mixing see Note 8. Select water contents for the occurs first, for the following apparatus: rest of the specimens to provide at least two specimens wet and 7. At least two water contents are necessary on the wet 7.

Some soils with very high 7. Verify the may require larger water content increments to obtain a well guide sleeve requirements in accordance with 6.

Water content increments 7. In NOTE 8—With practice it is usually possible to visually judge a point addition, the clearance between the rammer and the inside near optimum water content. Typically, soil at optimum water content can surface of the mold shall be verified in accordance with 6.

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At water 8. Test Sample contents dry of optimum soils tend to crumble; wet of optimum soils tend 8.

Optimum water content is approximately 35 lbm 16 kg , and for Method C is approxi- typically slightly less than the plastic limit. Therefore, the field sample To obtain the specimen water 8.

Mix sieves of interest by Test Methods D or C It is only the soil frequently during drying to maintain even water necessary to calculate percentages for the sieve or sieves for content distribution.

Thoroughly mix each specimen to ensure which information is desired. Preparation of Apparatus with Table 1 prior to compaction. For the purpose of selecting 9.

Assemble the mold, base and Classification Minimum Standing Time, h extension collar. Check the alignment of the inner wall of the mold and mold extension collar. Adjust if necessary. Lightly tamp the soil same material source. For referee testing, classification shall be prior to compaction until it is not in a fluffy or loose state, using by Test Method D Following compaction of each of the first be friable, reduce the water content by air drying until the four layers, any soil adjacent to the mold walls that has not material is friable.

Drying may be in air or by the use of drying been compacted or extends above the compacted surface shall apparatus such that the temperature of the sample does not be trimmed.

Thoroughly break up the aggregations in additional soil for the next layer. A knife or other suitable such a manner as to avoid breaking individual particles.

Pass device may be used. The total amount of soil used shall be such the material through the appropriate sieve: No. The in. Add the required amounts of NOTE 9—When compacting specimens wetter than optimum water water to bring the water contents of the specimens to the values content, uneven compacted surfaces can occur and operator judgment is selected in Follow the specimen preparation procedure required as to the average height of the specimen.

The mold shall rest on a uniform rigid foundation, such Secure the base plate to the rigid A knife may be used to trim the soil adjacent to the collar to foundation. The method of attachment to the rigid foundation loosen the soil from the collar before removal to avoid shall allow easy removal of the assembled mold, collar and disrupting the soil below the top of the mold.

Additional holes or slots ft3 6 25 cm3. A mold assembly having the minimum may be incorporated in the guide sleeve.

There in 6. The rammer shall fall freely through a distance of 18 shall be 0. The mechanical rammer shall meet the calibration kg , except that the mass of the mechanical rammers may be requirements of Test Methods D The mechanical rammer adjusted as described in Test Methods D see Note 7. The rammer shall be replaced the 6.

The specimen contact the diameter exceeds 2. The rammer shall operate system to assume that the mass of the rammer is equal to its mass in such a manner that the vertex of the sector is positioned at determined using either a kilogram or pound balance and 1 lbf is equal to the center of the specimen. If adjustments or repairs are ments of Specification D for a balance of 1-g readability. The total length Determine the water content increments of water.

Calibration having water contents such that they bracket the estimated 7. A specimen having a water content other occurrences that might affect the test results, at intervals close to optimum should be prepared first by trial additions of not exceeding test specimens, or annually, whichever water and mixing see Note 8.

Select water contents for the occurs first, for the following apparatus: At least two water contents are necessary on the wet 7. Some soils with very high 7. Verify the may require larger water content increments to obtain a well guide sleeve requirements in accordance with 6. Water content increments 7. In NOTE 8—With practice it is usually possible to visually judge a point addition, the clearance between the rammer and the inside near optimum water content.

Typically, soil at optimum water content can surface of the mold shall be verified in accordance with 6.

At water 8. Test Sample contents dry of optimum soils tend to crumble; wet of optimum soils tend 8. Optimum water content is approximately 35 lbm 16 kg , and for Method C is approxi- typically slightly less than the plastic limit. Therefore, the field sample To obtain the specimen water 8.

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Mix sieves of interest by Test Methods D or C It is only the soil frequently during drying to maintain even water necessary to calculate percentages for the sieve or sieves for content distribution. Thoroughly mix each specimen to ensure which information is desired. Preparation of Apparatus with Table 1 prior to compaction.

For the purpose of selecting 9. Assemble the mold, base and Classification Minimum Standing Time, h extension collar.

Check the alignment of the inner wall of the mold and mold extension collar. Adjust if necessary.

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Lightly tamp the soil same material source. For referee testing, classification shall be prior to compaction until it is not in a fluffy or loose state, using by Test Method D Following compaction of each of the first be friable, reduce the water content by air drying until the four layers, any soil adjacent to the mold walls that has not material is friable. Drying may be in air or by the use of drying been compacted or extends above the compacted surface shall apparatus such that the temperature of the sample does not be trimmed.

Thoroughly break up the aggregations in additional soil for the next layer. A knife or other suitable such a manner as to avoid breaking individual particles. Pass device may be used. The total amount of soil used shall be such the material through the appropriate sieve: The in. Add the required amounts of NOTE 9—When compacting specimens wetter than optimum water water to bring the water contents of the specimens to the values content, uneven compacted surfaces can occur and operator judgment is selected in Follow the specimen preparation procedure required as to the average height of the specimen.

Hold the shall be compacted as follows: The mold shall rest on a uniform rigid foundation, such Secure the base plate to the rigid A knife may be used to trim the soil adjacent to the collar to foundation. It is rather a good book. Best regards. Focht3 Geotechnical 10 Dec 02 Local practices - based on available materials, weather and what has proved successful on similar projects - are important. For BigH, using the modified Proctor may make sense under buildings because his Toronto-area projects use a lot of granular fill.

This makes sense because the materials are easy to compact to this standard. Here in central Texas, we do use modified Proctor on crushed limestone base material as fill beneath buildings; but low PI clays are also commonly used as fill along the coast Houston, Corpus Christi, Brownsville.

We have to be careful to avoid overcompaction in these materials! The D density is about When using a 6-in. From the compaction curve, determine the compaction results: optimum water content, to nearest 0. It is only the soil frequently during drying to maintain even water necessary to calculate percentages for the sieve or sieves for content distribution.

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Lupita Ramirez. Prior to Table 2 prior to compaction. Following compaction of each of the first four too damp to be friable. More From Gustavo Bances Herrera.

Skip to main content. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single D Test Method for Density of Soil and Rock in Place standard. NOTE 6—The quality of the result produced by this standard is 5.

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