How do you calculate optimum moisture content?
How do you calculate optimum moisture content?
To calculate the amount of liquid required per m3 to achieve OMC, multiply the answer in #5 (4grm) by 9000. Or, simply by a factor of 9. (4grm x 9 = 36ltr of liquid) This will give you the total amount liquid liters (36ltr) to achieve OMC.
What is the acceptable percentage of compaction?
In general, a compaction between 80 and 85 percent of the standard Proctor maximum dry density optimizes slope stability with vegetation development and growth.
What is corrected maximum dry density?
The corrected maximum dry density (D) appears to be based on AASHTO standard T22410 which describes a procedure whereby the maximum dry density (D1) is adjusted to compensate for differing percentages of the coarse fraction retained on the 4.75 mm sieve in the total sample.
How do you measure moist density?
When there is moisture content in the soil, the wet bulk density is obtained by dividing the mass of solids plus the mass of water by the total volume.
What does 95% compaction mean?
95 percent compaction means that the soil has been compacted to 95 percent of the possible density of the soil through compactive efforts. Maximum dry density, along with optimum moisture content, is determined in the laboratory and provides the target for field compaction.
What is MDD and OMC?
2. Definitions and abbreviations. MDD – Maximum Dry Density. MWD – Maximum Wet Density. OMC – Optimum moisture Content.
Can you have over 100% compaction?
Because conditions in the field do not match the ideal conditions in a laboratory, the target compaction is scaled to a percentage of the dry density determined in the lab. This can range from 90 percent to over 100 percent.
What is the corrected optimum moisture content?
5.2 The corrected optimum moisture content is used to determine the amount of moisture which should be added to the material to achieve maximum dry density.
What is the difference between dry density and wet density?
The relationship between dry density and wet density is: dry density = wet density divide by (1 + moisture content as a fraction). e.g., Moisture content is 10%. Wet density is 110 pcf, then the dry density is 110/1.1 = 100 pcf.