What is ASTM D698?
What is ASTM D698?
ASTM D698 : Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3 ))
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))
What is the optimum moisture content of soil?
10.2 Compaction characteristics
|Soil||Optimum moisture content for compaction (range in %)|
|Inorganic silt, clayey silt||24 – 12|
|Inorganic clay||24 – 12|
|Organic silt||33 – 21|
|Inorganic clay, highly plastic||36 – 19|
What is the difference between standard Proctor test and modified Proctor test?
Standard Vs Modified Proctor In Standard Proctor test soil sample is compacted in 3 layers whereas in the Modified Proctor Test soil sample is compacted in 5 layers. A higher value of dry density is obtained in the Modified Proctor test as compared to the Standard Proctor test.
How do you test soil compaction?
The Process and Soil Compaction Tests: Place soil in the mold in 3 layers. Compact the soil with 25 well-distributed blows of the hammer. Carefully detach the collar extension and base without distributing the soil. Determine the weight of the Proctor mold and the soil.
What does 95 percent 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 the zero air voids line?
Zero air void line is the line that shows the relationship between the water content and the dry unit weight of the soil with a 100% degree of saturation or at zero void is called the zero air void line or 100% degree of saturation line.
Can compaction be more than 100?
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 98 soil compaction?
What is 98% Compaction? 98% compaction is simply the result of the comparison between field values and lab values for a specific soil. 98% compaction just means that the density of the material placed on site is 98% of the maximum density determined in the lab.