Geotechnical Lab G1: Standard Proctor Test Procedure

Standard Proctor Test

• Adding 4% water to the dry soil sample in the Standard Proctor Test helps to achieve optimal compaction.
• Adding water increases the dry density of the soil in the Standard Proctor Test.

Modified Standard Proctor Test

• The modified Standard Proctor Test uses a heavier hammer with more blows compared to the standard test.

Geotechnical Testing

• OMC stands for Optimum Moisture Content in geotechnical testing.

Compaction

• Moisture content and dry density are inversely related during compaction, meaning that as moisture content increases, dry density decreases.
• The formula for calculating dry density is: Dry Density = Bulk Density / (1 + Moisture Content)
• The formula for relative compaction is: Relative Compaction = (Dry Density / Maximum Dry Density) * 100

Soil Testing

• The preferred method for testing the density of soft soil is not specified.
• MDD stands for Maximum Dry Density in the context of soil testing.

Fluid Mechanics

• The Darcy law equation v=ki=k(h/L) represents the relationship between fluid flow, hydraulic gradient, and permeability.
• The Reynolds number (Rn) represents the ratio of inertial forces to viscous forces in fluid mechanics.

Turbines

• The characteristic energy transfer in a Pelton impulse turbine is primarily based on the impulse of water jets.

Empirical Correlations

• The Blasius empirical correlation (0.079*Rn^-0.25) represents the relationship between friction factor and Reynolds number.

Field Density Testing

• The purpose of conducting a field density test using the sand cone, rubber balloon, or nuclear method is to determine the in-situ density of soil.

Permeability Testing

• The permeability test involves measuring the rate of fluid flow through a soil sample.

Critical Reynolds Number

• The findings related to critical Reynolds number are not specified.