ASTM D427 PDF
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. Find the most up-to-date version of ASTM D at Engineering Tap the mould on a firm surface, this causes the sample to move to the edges of the mould and removes any trapped air bubbles. Caution: prolonged tapping.
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Skip to main content. Log In Sign Up. D — 04 Standard Test Method for 1 Shrinkage Factors of Soils by the Mercury Method This standard is issued under the fixed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Referenced Documents shrinkage ratio. Atter- Soil Constants berg. These water contents distinguish the boundaries of the D Terminology Relating to Soil, Rock, and Contained several consistency states of cohesive soils. The relative Moisture Content of Soil and Rock by Mass contribution of this portion of the soil must be considered when D Practice for Description and Identification of Soils using this test method to evaluate the properties of the soil as Visual-Manual Procedure a whole.
D Practice for Minimum Requirements for Agencies 1. The values stated in inch-pound units are approxi- as Used in Engineering Design and Construction mate and given for guidance only. D Specification for Evaluating, Selecting, and Speci- 1.
How one applies the results obtained using this 3. Terminology standard is beyond its scope. It is the 3. Last previous edition approved in as D — Summary of Test Method 6. The final mass and volume of the solid soil pat 6.
Significance and Use 6. Inhalation of mercury vapor is a the competence of the personnel performing it and the suitability of the serious health hazard.
Mercury can asttm be absorbed through equipment and facilities used. Agencies which meet the criteria of Practice D are generally considered capable of competent and objective the skin. The effects of mercury are cumulative.
Shrinkage Limit Set
Users ast this test method are cautioned that compliance atsm 7. Reliable testing mercury in sealed shatter-proof containers to control evapora- depends on several factors; Practice D provides a means of evalu- tion, work in a well-ventilated area preferably under a fume ating some of those factors. Rubber gloves should be worn at all times.
Fill the glass cup to overflowing with portion of the material passing the No. Remove the excess mercury by pressing the glass which has been obtained in accordance with Practice D Observe that there is no air trapped between the plate and mercury and if there is, refill the dish and repeat the process.
The amount of water added should outside of the cup. Place the cup filled with that will flow sufficiently to expel air bubbles when using mercury in the evaporating dish and rest the soil pat on the gentle tapping action.
It is desirable to use the minimum surface of the mercury it will float. Using the glass plate with possible water content. This is of some importance with very the three prongs gently press the pat under the mercury and plastic soils so that they do not crack during the drying process. Observe that there is no air trapped between petroleum jelly, silicone grease, or similar lubricant to prevent the plate and mercury, and, if there is, repeat the process the adhesion of astn soil to the dish.
Determine and record the starting from 9. Fill the shrinkage dish to over- mass density of mercury. Record the volume in cubic centime- flowing with mercury. Warning—mercury is a hazardous tres cubic astk of the dry soil pat, D4227. Remove the excess mercury by pressing the glass Observe that M 5 Mw 2 M T 1 there is no air d47 between the plate and mercury and if there is, refill the dish and repeat the process.
The value of a previous measurement soil as a percentage of the dry mass as: Add an amount of soil approximately xstm to the first Add more following equation: Strike off the excess soil with a straightedge, and wipe off all soil adhering to the Report outside of the dish.
Immediately after it is filled and struck off, Oven-dry the soil pat to constant mass If the soil pat is cracked or has number and omitting the percentage d27.
Determine and record the mass in and omitting the percentage designation. These samples were found Multilaboratory: These values only apply to 1. The figures given in Column 4 are the limits that should not be exceeded soils which are similar to Proficiency Samples and NOTE 4—Criteria for assigning standard deviation values for highly NOTE 3—The figures given in Column 3 are the standard deviations that plastic or noncohesive soils are not available at the present time.
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