This research consisted of performing both standard and modified proctors tests on representative groups of nebraska soils and then evaluating and comparing the test results. Both the original and modified here the modified proctor compaction test 1946. The proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense. As shown in fig 1, a soil that is compacted uniformly in construction will only compact along the field moisture density relations generated by compactor a with a soillift combination. Standard proctor test an overview sciencedirect topics. These same design procedures were subsequently incorporated into post.
It was designated astm test d1557 or modified aashto t180, initially adopted in 1958 the modified proctor test uses a 10lb hammer in an 18inch drop sleeve. The test is named in honor of ralph roscoe proctor, who in 1933 showed that the dry density of a soil for a given compactive effort depends on the amount of water the soil contains during soil. Proctor soil compaction test procedures, tools and results. Please note that you have to take first a sample soil where you are going to do compaction test and test it for proctor test where you will get the maximum dry density or mdd that. Jul 26, 2018 in this video we will see how to do the proctor compaction test as indian standard for heavy compaction. The procedures for determining the maximum dry density, optimum moisture content, inplace density, inplace strength, and moisture content of soils, granular soil, and coarse aggregates in the field will be as follows. The standard proctor compaction test was developed by r.
Compaction test of soil is carried out using proctor s test to understand compaction characteristics of different soils with change in moisture content. Pdf rolling dynamic compaction rdc is a generic term associated with densifying ground using noncircular impact rollers. Proctor test astm d155791 the proctor, or modified proctor test, determines the maximum. Compaction of soil is the optimal moisture content at which a given soil type becomes most dense and achieve its maximum dry density. Fundamentals of soil compaction intelligent compaction. The soil moisture content and the degree of dry density to which the soil is prepared to be compacted maintain a definite relationship. Proctor compaction test civil official all about civil. Proctor compaction test for maximum dry density 1 proctor compaction test for maximum dry density 2 what is compaction.
That concept is known today as the moisture density relationship test. Pdf use of proctor compaction testing for deep fill. Apr 26, 2016 the proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. Test frequency nd t 180 or nd t 99, moisture density relations of soils multipoint 1 compaction curve for each change in soil. Cbr test is run on soils to gauge the strength of the subgrade as compared to a dense graded aggregate. The nebraska department of roads specifies the standard proctor test astm d 698aashto t 99 as the method of estimating maximum dry density and optimum moisture content for subgrades and compacted fill sections. The soil moisture content and the degree of dry density to which the soil.
Moisturedensity relationship using typical moisturedensity curves one point proctor alternate method d. Interpetation of test results official portal of ukm. Standard method of test for moisture density relations of soils using a 2. The average maximum dr y density of three samples representing the nat ural sand and other. Interpetation of test results 2 the effect of varying the compactive effort is to vary the maximum dry density and optimum moisture content. Currently, the proctor test is used primarily by civil engineers to determine the owc for foundation and highway construction purposes and is not routinely conducted on agricultural soil samples. This test method is used for field determination of the maximum dry density and optimum moisture content of a soil. Maximum dry density onepoint proctor test used for soil with more than 35% passing no. Different types of field density test are being practiced in different parts of the world for evaluation of insitu soil compaction and knowing the relative degree of compaction. Its process is almost same as standard proctor test. Summary of method the test consists of the following steps which are explained in the test procedure. Comparisons between modified proctor, standard proctor, 15blow. Compaction test of soil is carried out using proctors test to understand compaction characteristics of different soils with change in moisture content.
So this read explains in depth, the significance, background, apparatus and procedure of the standard proctor test. This test establishes the maximum obtainable dry density and optimum moisture content for particular embankment material. Maximum dry density of soil is determined in the laboratory with the help of standard proctor test standardized by astm d698 and aashto t99. Generally before any soil compaction occurs various samples of the proposed embankment or fill is analyzed in the lab. The proctor compaction test is a test that compacts the soil material at various moisture. This is important not only for durability, but will save money because less compaction effort is needed to achieve the desired results. Nd d 2167, density and unit weight of soil in place by the rubber balloon method, or nd t 191, density of soil inplace by the sand cone method 1 test. Scope this method of test covers the procedure for measuring the inplace density and moisture of soils by the attenuation of gamma and neutron radiation. The test now known as the british standard light compaction test. The calculated dry density of the field sample is 105. Astm d698 12e2 standard test methods for laboratory. Its process is almost same as standard proctor test with little differences which you will know here in details.
Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. A typical field testing procedure to determine the load bearing capacity of t he prepared groundin this instance several feet of a clay loam fill compacted with a sheeps foot rolling vibrator. D maximum dry density testing on site laboratory office. For any soil, at a given compactive effort, the density. At the same time and for each proctor test, modulus tests are performed to obtain the lab soil modulus. A moisture density plot resulting from a standard lab compaction test of the same soil can also be superimposed on the same moisture density graph, as illustrated. The moisture content dry density relationship of the soil obtained from proctor s test forms the basis for. However, there is a body of literature that attempts to correlate the two soil properties. Maximum dry density of soil and optimum moisture content test. Density is a ratio expressed by the formula dw v or density equals the weight of material divided by the volume it occupies. The proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. For these soil types it is normal to specify a relative density, id, that must be achieved. The result wascompared to the maximum dry density and optimum moisture content results from the onepoint proctor test. Modified proctor test is used to determine the compaction of different types of soil and the properties of soil with a change in moisture content and the relationship between dry density and moisture content.
D4914 test methods for density and unit weight of soil and rock in place by the sand replacement method in a test. The standard proctor test approximates maximum soil density. Dec 29, 2015 the proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. Use proctor for determining target moisture and density for soil and type 1 granular material perform test with substitution for material retained on the. Proctor showing that for a given compaction effort, the density of soil. Density has a controlling influence on ssb strength and the density achieved for an ssb depends on the energy supplied during compaction. This test establishes the maximum obtainable dry density and optimum moisture content for. The test methods followed were the aasho designation t180 method c, the michigan cone test, the indiana vibratory hammer method, the astm method d 2049 relative density, the washington springloaded vibratory compactor method, the marshall hammer test.
To obtain the graphical relationship of the dry density to moisture content in the form of. Ken sudduth ag engineer usda agricultural research service columbia, mo. A small sample of the material is prepared, weighed and placed into the vessel. For increasing effort, the maximum dry density and optimum moisture content. To obtain the graphical relationship of the dry density to moisture content in the form of compaction curve, for determining the values of optimum moisture content omc and maximum dry density mdd. Ppt proctor compaction test for maximum dry density. Determination of the relationship between the moisture content and density.
Aashto t99 or modified proctor aashto t180 density test for determining the percent of maximum density. A soils optimum moisture content is usually lower when compacted to modified proctor versus standard proc. Field density test fdt 7 methods and their comparison. Proctor, and porter static compaction tests on samples of silt and clayey sand by the army. Soil compaction is the process in which stress is applied to a soil which causes densification as the voids are filled with solids. Penndot specification changes for materials, equipment. Astm d1557 12e1 standard test methods for laboratory. Use of proctor compaction testing for deep fill construction using impact rollers. Compaction of soil at maximum dry density is required in many engineering projects.
That concept is known today as the moisture density relationship test, laboratory compaction. Apr, 2016 proctor compaction test for laboratory this test is used to determine the relationship between water content and dry unit weight of soils. The details included in this test method are for use with the standard proctor test. The proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will. Used proctor test for determining target moisture and density for soil and granular material performed test with substitution for material retained on the. Modified proctor test an overview sciencedirect topics. The test made use of a hand rammer and a cylindrical mould with a volume of ft3, and became known as the standard proctor compaction test proctor, 1933. Modified proctor or standard proctor tests are performed and the optimum moisture content as well as the maximum dry density is determined from the compaction curves. Proctor test astm d155791 the proctor, or modified proctor test.
A particular soil needs to have an ideal or optimum amount of moisture to achieve maximum density. Standard proctor test or proctor compaction test was the original test devised by an american engineer ralph r. According to proctor, the compaction of a soil mass is dependent on the following four major factors. Test methods attachment i lists the test methods that will be used to test soils, granular soil, and aggregates. This plays a vital part in construction for soils are mainly used as supports for a lot of infrastructures. The intensity of the radiation detected is dependent in part. Standard proctor test procedure apparatus calculation. Compaction characteristics of stabilised soil mixtures can be established by reference to the standard proctor test, under which the ssb density achieved could be either more or less than the standard proctor. D69812e2 standard test methods for laboratory compaction characteristics of soil using standard effort 12 400 ftlbfft3 600 knmm3 density water content particle size. What is the difference between standard proctor test and. Modified proctor test is used to determine the compaction of different types of soil and the properties of soil with a change in moisture content. Compaction is the process of increasing the bulk density of a soil or aggregate by driving out air. The test now known as the british standard light compaction test is very similar, although the equipment used differs in some details. Proctor, a student at the university of california, berkeley, established a laboratory procedure that easily defines the practical maximum density of a soil sample along with the optimum moisture content needed to achieve that density.
Standard method of test for moisturedensity relations of soils using a 2. Take a representative sample of air dried soil of about 5 kg soil not susceptible to. When performing a test, some preliminary test information must be obtained by conducting a one. Pdf use of proctor compaction testing for deep fill construction.
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