Standard proctor compaction test formula.asp

Proctor Soil Compaction Test Compaction is the process of densification of soil by reducing air voids. The degree of compaction of a given soil is measured in terms of its dry density.
Proctor test are used for determining the optimum moisture where a soil type will give more density and can achieve maximum dry density. 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 ASTM test specification says that all the soil of a sample being tested in the lab. Proctor test must pass through a No. 10 sieve if the 4 inch diameter compaction mold is to be used. Otherwise, the 6 inch diameter mold must be used.

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The most common soil compaction test is the Standard Proctor test that was originally proposed by R. R. Proctor in 1933 (Davis, 2008). According to the ASTM D698 (2012) standard, during the Proctor test, fractions of similar soils with different moisture contents are compacted in a four inch [101.6mm] May 14, 2009 · Proctor Tests - There is always confusion about density and compaction testing since the terms are used interchangeably, and they really are different things. The proctor tests are done on a soil sample that is brought to the lab and compacted to determine the level of compaction that can be achieved on that soil.
" Determination of adequate compaction is done by determining the in-situ density of the soil and comparing it to the maximum density determined by a laboratory test. The most commonly used laboratory test is called the Proctor compaction test and there are two different methods in obtaining the maximum density.

7.1 A "one point Proctor" is an abbreviated standard Proctor compaction test and is used in conjunction with the family of curves. Rather than determining the moisture and density points for an entire curve, a single point is determined for the purpose of selecting the curve, which represents the soil being compacted, from the family of curves. 8. In the standard Proctor compaction test, the mass of the hammer is (a) 2.5 kg. (b) 4.536 kg. (c) 5 kg. (d) 10 kg. 9. In the modified Proctor compaction test, the drop of the hammer is (a) 101.6 mm. (b) 304.8 mm. (c) 457.2 mm. (d) none of the above 10. The number of hammer blows for each soil layer in the standard Proctor compaction test is ...
When Proctor came up with a compaction control test way back when, the equipment available for field compaction were relatively light and the Standard test as it was known later (as opposed to modifies) was adequate for the intended purpose, namely compaction control in the field. Soil compaction problem The results of a standard Proctor test are given below. Determine the maximum dry unit weight of compaction and the optimum moisture content. Volume of Proctor mold ft) Welght of wet soll In the mold (lb) Moisture content 1/30 1/30 1/30 1/30 1/30 3.26 4.15 4.67 4.02 3.63 8.4 10.2 12.3 14.6 16.8 .Plot the compaction curve ...

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required for the moisture test in accordance with ITM 506 and approximately 4 to 5 pounds would be necessary to produce the molded soil sample for the one-point proctor. This sample need not be protected from drying. The sand cone test resulted in the following: Wet Density of in-place soil was 123.0 lb/ft3 and the moisture was 17.0 percent ...
Standard proctor test - whole soil sample is compacted in 3 layers with 25 evenly distributed blows on each layer with 2.5 kg rammmer and free fall of 300 mm. In Modified proctor test- whole soil sample is compacted in 5 layers with 25 evenly distributed blows on each layer from 4.6 kg rammer with free fall of 450 mm. Standard Compaction Test Equipment 1. Proctor mould with a detachable collar assembly and base plate. 2. Manual rammer weighing 2.5 kg and equipped to provide a height of drop to a free fall of 30 cm.