What is ASTM D1557?
ASTM D1557 : Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3))
How do you do a soil compaction test?
The best way to test is to probe the soil with a compaction tester to a depth of 36″ to 48″. The testing rod should move down through the soil with steady, even pressure, Hard, compacted soils resist penetration with the rod. Often penetration abruptly stops at a fairly uniform depth across a field or landscape area.
How do you perform a modified Proctor test?
4. Modified Proctor Test Procedure:
- Take about 4 kg of air-dried soil passing No.
- Weigh the empty mold without a collar, with base plate attached.
- Place the mold With the collar attached on a solid base and compact the soil mass into the mold using standard compaction in five layers with 25 blows per layer;
Which is code is used for Modified Proctor test?
The standard Proctor is a laboratory test performed in order to determine the maximum dry density and optimum moisture content of a given soil. This test usually conforms to ASTM D698. The modified Proctor (ASTM D1557) is a different, but similar, laboratory test used for the same thing.
What is the difference between modified and standard Proctor?
Modified proctor test are more advanced than the standard test but the purpose are same. In case of modified proctor test the density value achieved is high than standard. In order to achieve maximum density the standard test require more moisture while the modified method need less. The standard test give less precise value than the modified one.
What is modified Proctor Density?
RE: Modified Proctor Density. Proctor density is a density of a sample of soil after it has been compacted in a laboratory. The ASTM designation for it (D1557 I think) calls for a soil sample to be sequentially placed in a small steel form (like a can with an open top) in layers.
What is modified Proctor test?
Modified Proctor Test is used to determine the compaction of different types of soil and the properties of soil with a change in moisture content; and the relationship between Dry Density and Moisture Content. Its process is almost same as Standard Proctor Test with little differences which you will know here in details.
What is a standard Proctor?
Standard Proctor. The standard Proctor is a laboratory test performed in order to determine the maximum dry density and optimum moisture content of a given soil. This test usually conforms to ASTM D698.