This plays a vital part in construction for soils are mainly used. The proctor mould of ft 3 944 cm is used in astm standards. The experimental procedure, the description of the apparatus devised and. This test is adapted by bis and is known as heavy compaction test. A soils optimum moisture content is usually lower when compacted to modified proctor versus standard proc. Apr 04, 2020 the proctor test is a test that is used in geotechnical engineering to find out the maximum density that can be practically achieved for a soil or similar substance. Take a representative sample of air dried soil of about 5 kg soil not susceptible to. Soils field testing after each layer trim any soil along the mold walls and distribute on top of compacted layer keep manual hammer perpendicular to base of mold and lift to its maximum. Compaction of soil is the optimal moisture content at which a given soil type becomes most dense and achieve its maximum dry density by removal of air voids. Standard test methods for laboratory compaction characteristics of soil using. In all the above cases make at least five determinations and the range of moisture content shall be such that the. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
The proctor compaction test is a test that compacts the soil material at various moisture contents. This plays a vital part in construction for soils are mainly used as supports for a lot of infrastructures. The nuclear density is compared to the maximum dry density to calculate the percent density and the moisture content from the nuclear gauge is compared to. The determination of maximum dry density and optimum moisture content of the soil is a measure of compaction level of soils. May 14, 20 objective for determination of the relation between the water content and the dry density of soils using light compaction.
Astm d698 12e2 standard test methods for laboratory. Jul 19, 2014 a typical field testing procedure to determine the load bearing capacity of t. Test procedure is similar to that of standard proctor test. Maximum dry density of soil and optimum moisture content test. Take a representative portion of airdried soil large enough to provide about 5 kg of material passing. Note 1the equipment and procedures are the same as proposed by the u. The sample must be obtained cautiously and the amount. Standard test methods for laboratory compaction characteristics of soil using standard effort 12 400 ftlbfft 3600 knmm 1 this standard is issued under the. Weigh the proctor mould without base plate and collar. Onepoint proctor if the soil is cohesive in nature, the indot family of curves may be used. With required test data available, p roceed from left to.
What is the difference between standard proctor test and. According to proctor, the compaction of a soil mass is dependent on the following four major factors. Determination of water contentdry density relation using light compaction. Standard proctor test procedure four to five representative samples of soils are obtained each about 2. Proctor soil compaction test procedures, tools and results. The standard proctor test astm d698 employs 12,400 ftlbsft. Modified proctor aashto t180astm d1557 testing procedures more closely approximate the compaction effort of modern equipment. Jul 26, 2018 in this video we will see how to do the proctor compaction test as indian standard for heavy compaction. Objective for determination of the relation between the water content and the dry density of soils using light compaction. Jan 27, 2019 standard proctor test procedure four to five representative samples of soils are obtained each about 2.
Jun 14, 2014 objective to determine moisture content and dry density relationship using heavy compaction or modified compaction method as per is2720part8. Modified proctor test an overview sciencedirect topics. In all the above cases make at least five determinations and the range of moisture content shall be such that the optimum moisture content at which the maximum dry density occurs is within that range. The details included in this test method are for use with the standard proctor test. Soil compaction is the process in which stress is applied to a soil which causes densification as the voids are filled with solids. A modified proctor test is conducted by placing soil in a standard mold and compacted with a standard ram. Summary of method the test consists of the following steps which are explained in the test procedure. Weights required for the bulk sample will range from about 50lb to 100lb 23kg to 45kg of moist sample, depending on the test method specified. This test method determines the relationship between the moisture content and the density of soils compacted in a mold. The cbr test is one of the most commonly used methods to evaluate the strength of a sub grade soil, sub base, and base course material for design of thickness for highways and airfield. The standard proctor test astm d698, aashto t99, and the modified.
Compaction test proctor test civil engineering notes. Proctor compaction test procedure a representative bulk field sample is obtained for each type of soil material proposed for use in the earthwork operation. There are two proctor tests that defined by the american association of highway officials and american standard testing material. This can be measured by mainly two methods standard. The scope of the standard proctor compaction test is to determine the.
Im 309 determining standard proctor moisture density relationship of soils. Astm d698 00a standard test methods for laboratory. This typically leads to variances between 8% and 11%, as shown above. Indian institute of technology gandhinagar department of. Both the original and modified here the modified proctor compaction test 1946. Soils field testing air pressure is forced into the cylinder and forces the water filled balloon out of the cylinder and into the test hole. Soils field testing north dakota department of transportation. The proctor soil compaction test is performed by measuring the density, or dry unit weight, of the soil being tested at different moisture content points.
It is similar to the british standard heavy compaction test. The remaining procedure is same as described above for cc mould. It was designated astm test d1557 or modified aashto t180, initially adopted in 1958 the modifed proctor test uses a 10lb hammer in an 18inch drop sleeve. In modified proctor test, the soil is compacted in the given mold in five 05 layers with a rammer of 10 lbs 4. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby. Compaction test of soil is also known as proctors test is done to understand. Standard proctor test procedure apparatus calculation. Compaction characteristics of soil astm d1557 proctor compaction test prepared by.
Compaction of soil process, necessity and theory of compaction. This is the most widely used method for the design of flexible pavement. As of may 20, 2008 the mndot laboratory manual is only available as an. Proctor test astm d155791 the proctor, or modified proctor test, determines the maximum density of a soil needed for a specific job site. Thoroughly mix the sample with sufficient water to dampen it with approximate water content. Apparatus metal mould volume cm3 balance capacity 10 kg, least count 1g oven 105 to 1100c sieve 19 mm metal rammer weight 4. Scope the moisturedensity relationship test is also called the proctor test. The proctor test is a test that is used in geotechnical engineering to find out the maximum density that can be practically achieved for a soil or similar substance. Pressure continues to be applied until water filled balloon completely fills test hole the water volume displaced from cylinder as test. Standard test methods for laboratory compaction characteristics of soil using standard effort 12 400 ftlbfft 3 600 knmm 3 active standard astm d698 developed by subcommittee. This omc value is with respect to the specific amount of compaction energy applied on the soil. While reading modules, in some cases, there are online selfquizzes to assess your understanding of the content read in the chapters. Procedure for standard proctor test approximately 5 kg of soil passing through 4.
The modified proctor test is of great importance and is widely used in the construction of roads, highways, earth fill dams, earth filling, airports, etc. Metal mould volume cm 3 for 100 mm diameter mould and volume 2250 cm 3 for 150 mm diameter mould as per is. After the technician has conducted a field test to determine the actual field density of an. The sample must be obtained cautiously and the amount must be enough to suffice the requirements of 4 to 5 repetition while filling the molds as well as the containers for the moisture content determination.
In this video we will see how to do the proctor compaction test as indian standard for heavy compaction. This method describes the procedure for determining the relationship. Pdf compaction of soil at maximum dry density is required in many engineering projects. Compaction test of soil is carried out using proctor s test to understand compaction characteristics of different soils with change in moisture content. The modified proctor test, the reduced modified proctor test, the standard proctor test and the reduced standard proctor test are dynamic methods which use different compactive efforts. For fine soil, 810% of water and for coarse soil, 4. In modified proctor test, the mould used is the same as for the standard proctor test having volume c. Ppt proctor compaction test for maximum dry density.
Evaluation of laboratory compaction procedures for specification of. Proctor compaction test for maximum dry density 1 proctor compaction test for maximum dry density 2 what is compaction. 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. This method covers the determination of the relationship between the moisture content and density of soils compacted in a mould of a given size with a 2. 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 results obtained by these tests are used with the empirical curves to determine the thickness of pavement and its component layers. Soil that needs to be compacted is placed in a standard mold and compacted fig. A typical field testing procedure to determine the load bearing capacity of t. Thoroughly mix the sample with sufficient water to dampen it with approximate water content of 46 %. October 2018 sample extruder a jack, lever frame, or other device for extruding compacted specimens from the mold quickly and with little disturbance. However, this procedure is judged to be much more complex and less desirable than the. 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.
The mndot laboratory manual outlines laboratory test procedures for materials testing. Determination of water content dry density relation using heavy compaction. According to proctor, the compaction of a soil mass is dependent on the. Take a representative ovendried sample, approximately 5 kg in the given pan. Compaction of soil process, necessity and theory of. The standard proctor test approximates maximum soil density capable of being produced by early generations of construction equipment. After the technician has conducted a field test to determine the actual field density of an embankment layer, a representative sample of soil, approximately 7 pounds, is removed from the area around the test site. For fine soil, 810% of water and for coarse soil, 45% of water is added. Students are required to arrange for their own proctors and test locations. Consult the current edition of aashto for procedure in its entirety and equipment specification details. Take a representative portion of airdried soil large enough to provide about 5 kg of material passing 19mm is sieve for soils not susceptible to crushing during compaction or. The proctor compaction test is a laboratory method of experimentally determining the. For the same type of soil, the modified proctor yields a higher maximum dry density and lower optimum moisture content. The optimum moisture content omc or optimum water content owc is the moisture content at which the soil attains maximum dry density.
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