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Prosedur Dry Sieve Analysis: 1. Oven dry the sample, allow it to cool and measure its weight. 2. Select a stack of sieves suitable to the soil being tested. A stack of six or seven sieves is generally sufficient for most soil and applications. The top sieves soil should have and opening slightly larger than the largest particles. Arrange the stack of sieves so that the largest mesh opening is at the top and the smallest is at the bottom. 3. Attach a pan at the bottom of the sieve stack. Pour the sample on the top sieve. Add the cover plate to avoid dust and loss of particles while shaking. 4. Place the stack of sieves in the mechanical shaker and shake for about 10 min or until additional shaking does not produce appreciable changes in the amounts of material retained in each sieve. 5. Remove the stack of sieves from the shaker. Beginning with the top sieve, transfer its contents to a piece of

Prosedur Dry Sieve Analysis

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Page 1: Prosedur Dry Sieve Analysis

Prosedur Dry Sieve Analysis:

1. Oven dry the sample, allow it to cool and measure its weight.

2. Select a stack of sieves suitable to the soil being tested. A stack of six or seven sieves is generally sufficient for most soil and applications. The top sieves soil should have and opening slightly larger than the largest particles. Arrange the stack of sieves so that the largest mesh opening is at the top and the smallest is at the bottom.3. Attach a pan at the bottom of the sieve stack. Pour the sample on the top sieve. Add the cover plate to avoid dust and loss of particles while shaking.4. Place the stack of sieves in the mechanical shaker and shake for about 10 min or until additional shaking does not produce appreciable changes in the amounts of material retained in each sieve.

5. Remove the stack of sieves from the shaker. Beginning with the top sieve, transfer its contents to a piece of the paper or a larger recipient. Carefully empty the sieve without losing any material, and use a brush to remove grains stuck in its mesh opening. Measure the weight of soil retained in each sieve and notes the corresponding sieve mesh opening and number.

6. Repeat step 5 for each sieve. As a preliminary check, the weights retained on all the sieves and the bottom pan are added, and their sum is compared to the initial sample weight. Both weights should be within about 1% if the difference is greater than 1% too much material was lost and weighing and or sieves should be repeated.

Prosedur Consolidation test:

1. Measure the internal diameter (D) and the height of the ring, using internal vernier calipers.2. Weight the ring to the nearest 0.01g (mR).3. Cutting the specimen and trimming into ring.4. Determine the initial moisture content from trimming soil.5. Determine the weight of ring and specimen (m1)6. Determine the mass of bulk specimen (m) to the nearest 0.01g using this equation

m = m1 – mR

7. Place the consolidation ring and specimen (cutting edge uppermost) centrally on the porous disc.8. Fit the ring retainer and cell body and then place the upper porous disc centrally on top of the specimen. 9. Place the consolidation cell centrally in position on the platform of the machine base.10. Lift the end of the beam to allow the loading yoke to be raised to the vertical

Page 2: Prosedur Dry Sieve Analysis

position and adjust the loading stem by screwing it downwards until the end engages closely in the recess on the top of the loading cap11. Attach the compression dial gauge to the arm on the support post.12. Add weight (2.5 kg) carefully to the load hanger13. Add water at room temperature to the cell and make sure that the specimen and upper porous disc are completely submerged. 14. Wind down the beam support and at the same time start the clock. 15. Observe the compression gauge readings and the clock, and record the readings on a consolidation test form at the selected time intervals.16. Plot the readings of the compression against time to a logarithmic scale and against square-root-time.

***No.16 buat lepas kelas saya pada Khamis ini.