ASTM D 422 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. D()e2 Standard Test Method for Particle-Size Analysis of Soils ( Withdrawn ) Format, Pages, Price. PDF, 8, $, ADD TO CART. Clayey Sand w/a little gravel (SC). Silty Sand (SM). Silty Sand w/a little gravel ( SC). *. Grain Size Distribution ASTM D 9/12/ Report Date: Test Date.
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". No. ". No. 1/2". No. 3/8". Summary of Procedure for ASTM D - Download as Word Doc .doc /.docx), PDF File .pdf), Text File .txt) or read online. Standard Test Methods for. Test Comment: Sample Description: Moist, black silty sand. Sample Comment : Particle Size Analysis - ASTM D printed 11/26/ AM. 0.
Then mix the solution for a period of two minutes. Add distilled water up to the mark. Engineering the palm of your hand.
Standard Test Method for Particle-Size Analysis of Soils
Then turn the cylinder upside down and back upright for a period of one minute. The cylinder should be inverted approximately 30 times during the minute. Remove the stopper from the cylinder. After an elapsed time of one minute and forty seconds, very slowly and carefully insert the hydrometer for the first reading. Note: It should take about ten seconds to insert or remove the hydrometer to minimize any disturbance, and the release of the hydrometer should be made as close to the reading depth as possible to avoid excessive bobbing.
The hydrometer is removed slowly and placed back into the control cylinder.
Very gently spin it in control cylinder to remove any particles that may have adhered. Engineering Data Analysis: Hydrometer Analysis: 1 Apply meniscus correction to the actual hydrometer reading. Engineering Table 1. Engineering Table 2. Engineering Table 3. A third limit, called the shrinkage limit, is used occasionally. The Atterberg limits are based on the moisture content of the soil. The liquid limit is the moisture content that defines where the soil changes from a plastic to a viscous fluid state.
The shrinkage limit is the moisture content that defines where the soil volume will not reduce further if the moisture content is reduced. Engineering A wide variety of soil engineering properties have been correlated to the liquid and plastic limits, and these Atterberg limits are also used to classify a fine-grained soil according to the Unified Soil Classification system or AASHTO system.
Assume that the soil was previously passed though a No. Thoroughly mix the soil with a small amount of distilled water until it appears as a smooth uniform paste. Cover the dish with cellophane to prevent moisture from escaping. The point on the cup that comes in contact with the base should rise to a height of 10 mm. Engineering 10 mm high and should be used as a gage. Practice using the cup and determine the correct rate to rotate the crank so that the cup drops approximately two times per second.
Squeeze the soil down to eliminate air pockets and spread it into the cup to a depth of about 10 mm at its deepest point. The soil pat should form an approximately horizontal surface. The tool should remain perpendicular to the surface of the cup as groove is being made. Use extreme care to prevent sliding the soil relative to the surface of the cup.
If the number of drops exceeds 50, then go directly to step eight and do not record the number of drops, otherwise, record the number of drops on the data sheet. The sample should include the soil on both sides of where the groove came into contact.
Place the soil into a moisture can cover it.
Engineering mass, remove the lid, and place the can into the oven. Leave the moisture can in the oven for at least 16 hours.
Place the soil remaining in the cup into the porcelain dish. Clean and dry the cup on the apparatus and the grooving tool. Add a small amount of distilled water to increase the water content so that the number of drops required to close the groove decrease. One of the trials shall be for a closure requiring 25 to 35 drops, one for closure between 20 and 30 drops, and one trial for a closure requiring 15 to 25 drops.
Determine the water content from each trial by using the same method used in the first laboratory. Remember to use the same balance for all weighing. Analysis: Liquid Limit: 1 Calculate the water content of each of the liquid limit moisture cans after they have been in the oven for at least 16 hours. Draw the best-fit straight line through the plotted points and determine the liquid limit LL as the water content at 25 drops.
Engineering Liquid Limit Determination Sample no.
Soil Hydrometer Type 151H ASTM D422 Graduated 0.995 to 1.038 Specific Gravity.
The plastic limit PL is the water content, in percent, at which a soil can no longer be deformed by rolling into 3. The plastic limit is the moisture content that defines where the soil changes from a semi-solid to a plastic flexible state.
A wide variety of soil engineering properties have been correlated to the liquid and plastic limits, and these Atterberg limits are also used to classify a fine-grained soil according to the Unified Soil Classification system or AASHTO system.
Test Procedure: Plastic Limit: 1 Weigh the remaining empty moisture cans with their lids, and record the respective weights and can numbers on the data sheet. Roll the mass between the palm or the fingers and the glass plate. Use sufficient pressure to roll the mass into a thread of uniform diameter by using about 90 strokes per minute. A stroke is one complete motion of the hand forward and back to the starting position.
The thread shall be deformed so that its diameter reaches 3. Knead and reform the pieces into ellipsoidal masses and re-roll them. Engineering gathering together, kneading and re-rolling until the thread crumbles under the pressure required for rolling and can no longer be rolled into a 3.
If the can does not contain at least 6 grams of soil, add soil to the can from the next trial See Step 6. Immediately weigh the moisture can containing the soil, record its mass, remove the lid, and place the can into the oven. Analysis: Plastic Limit: 1 Calculate the water content of each of the plastic limit moisture cans after they have been in the oven for at least 16 hours. Check to see if the difference between the water contents is greater than the acceptable range of two results 2.
Report the liquid limit, plastic limit, and plasticity index. Engineering Plastic Limit Determination Sample no. The compactive effort is the amount of mechanical energy that is applied to the soil mass. Several different methods are used to compact soil in the field, and some examples include tamping, kneading, vibration, and static load compaction.
The test is also known as the Proctor test. Each of these tests can be performed in three different methods as outlined in the attached Table 1. In the Standard Proctor Test, the soil is compacted by a 5.
The mold is filled with three equal layers of soil, and each layer is subjected to 25 drops of the hammer.
The Modified Proctor Test is identical to the Standard Proctor Test except it employs, a 10 lb hammer falling a distance of 18 inches, and uses five equal layers of soil instead of three. There are two types of compaction molds used for testing. If the larger mold is used each soil layer must receive 56 blows instead of 25 See Table 1.
An extremely important task of geotechnical engineers is the performance and analysis of field control tests to assure that compacted fills are meeting the prescribed design specifications.
In general, most engineering properties, such as the strength, stiffness, resistance to shrinkage, and imperviousness of the soil, will improve by increasing the soil density. The optimum water content is the water content that results in the greatest density for a specified compactive effort. Preparation of Portions Retained on No. Use a brush to remove all the particles stocked in the 10 sieve holes. Stop when the water through the sieve is already clear or of no brown impurities.
Use the squeeze bottle to remove all the particles stocked in the sieve holes. Preparation of Portions Passing through No.
The time required to be used is a minimum of 24 hours to obtain constant mass. Allow the material and the container to cool to room temperature or until the container can be handled comfortably with bare hands and the operation of the balance will not be affected by convection currents or its being heated. Hydrometer Analysis Test 24 After dispersion, the soil-water slurry is transferred to a glass sedimentation cylinder or graduated cylinder.
Mechanical Sieve Analysis 35 Weigh the mass of the empty set of sieves. Weigh it. At the end of weighing, the sum of the masses retained on all sieves used should equal closely the original mass of the quantity sieved.
Flag for inappropriate content. Related titles. Jump to Page. Search inside document. Miller De Leon Cutora. Ahmad Khreisat. Zherrinore Rasay. Maryono Asr.
John Darwin Sabio.Grain size analysis provides the grain size distribution, and it is required in classifying the soil.
From Table 1 obtain the viscosities and compute K A superscript epsilon? The drops should be applied at a uniform rate not exceeding around 1. No further reproductions authorized.
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