Table of Contents
What is meant by Proctor density?
Standard proctor density means the maximum weight per unit volume of earthen material which has been compacted by a specific weight and procedure, at an optimum soil moisture, according to a laboratory engineering test developed by Proctor.
What does it mean to have 95\% compaction?
95\% compaction means that the soil on the construction site has been compacted to 95\% of the maximum density achieved in the lab. It means that when you conduct compaction test(in the laboratory) on a small soil sample of a particular site. You get some value of maximum dry unit weight at certain moisture content.
What is Proctor value?
The Proctor compaction test provides a standardized method of determining a soil’s resistance to compaction over a range of soil water contents under a constant value of compaction energy. The optimum water content (OWC) is the amount of water required to produce a maximum dry density (MDD) from the test procedure.
What is MDD in soil test?
The determination of maximum dry density and optimum moisture content of the soil is a measure of compaction level of soils. Both the tests help to determine the optimum moisture content that is required for soil to attain maximum compaction i.e maximum dry density for performing construction.
What is mod Aashto?
This test is called the Mod AASHTO Compaction, the requirements should be specified in terms of the required percentage (typically 93\% or 95\%) and the moisture content at which Compaction should take place… More.
What is modified Proctor density?
The Modified proctor test is widely used for the determination of the compaction of the different types of soil and their properties with a change in the water content. The Modified proctor compaction test also determines the relationship between dry density and the water content of the soil.
What is meant by 98\% Proctor?
95\% compaction is just 95\% of the Proctor density, whereas 98\% compaction is 98\% of the Proctor density. If the Proctor density is 100 (let’s ignore units here), and the percent compaction is 95, that means that the soil that was just packed has a density of 95. 98/100 = 98\% = 98\% compaction.
What does 95\% Proctor density mean?
For example, specifications often require compaction to be 95 percent of Standard Proctor. This means the on-site soil density must be equal to 95\% of the maximum achievable compaction. • Compaction is achieved by applying three basic types of force to the soil mass.
What is standard Proctor maximum dry density?
The results of a set of standard Proctor compaction tests on a particular soil give a maximum dry density of 19.6 kN/m3 and an optimum moisture content of 12.5\%. The specific gravity of solids for the soil is 2.68.
What is OMC and MDD?
MDD – Maximum Dry Density. MWD – Maximum Wet Density. OMC – Optimum moisture Content. Zero Air Voids – is the relationship between dry density and corresponding moisture contents, for a specific particle density, assuming that all of the voids are completely filled with water.
Is 2720 maximum dry density?
Once it reaches a particular point a decrease of dry density is observed. The maximum peak point of the soil compaction curve obtained is called the Maximum dry density value. The water content corresponds to this point is called the Optimum water content (O.W.C) or optimum moisture content (O.M.C).