Standard proctor test procedure apparatus calculation. Soil and foundation engineering ced 43 designator of legally binding document. Testing the standard proctor density in the base trench prior to flowable fill. 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. Cylindrical core cutters of mm long and 100mm diameter are used for testing the insitu compaction of cohesive and clay soils placed as fill. Determine the insitu dry density of soil by core cutter. In order to evaluate the compaction of soil we have. Dry density of soil by core cutter method cylindrical core cutters of mm long and 100mm diameter are used for testing the insitu compaction of. We know that the conditions of site and that of the laboratory are different altogether.
Set the steel dolly on the top of the core cutter and use the steel rammer to push to its full depth. Soil compaction test by core cutter method up agriculture. This method covers the determination of the insitu density of compacted soils by using core cutter. 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. Compaction of the subsoil affects a range of soil functions and ecosystem services. These methods are used to study the insitu density of soils to understand the soil bearing capacity, stability, and. Standard proctor compaction test and modified proctor compaction test. Dry density of soil compaction test by core cutter method and. In this method, a core cutter is driven into the undisturbed soil at the site and the insitu density is determined by taking the. Free swell tests 27 engineering property tests on soils 8.
This test knows a different name like field density test, soil compaction test, compaction test, dry density of soil in place by core cutter method, filed compaction test, core cutter method. Standard proctor test or proctor compaction test was the original test devised by an american engineer ralph r. Determination of dry density of soils inplace by the core cutter method. Compaction of soil process, necessity and theory of. Determination of field density of soils by sand replacement. Compaction is most beneficial for the preparation of sub base grade and different pavement layers and in the production of embankment in order to increase the steadiness and to lower.
Influence of moisture content on intelligent soil compaction. The corecutter method covered by this part is suitable for finegrained soils free from aggregations. It is, therefore, very useful for control of earthworks and subgrade materials but is not suitable for coarse grained pavement. The core cutter method dutch raw standard 2010, test no. Soil and foundation engineering indian standard code books free download pdf is 1080 1985 code of practice for design and construction of shallow foundations in soils other than raft, ring and shell click here is 1498 1970 classification and identification of soils for general engineering purposes click here is 1888 1982 method of. Chapter 6 standard test procedures determination of insitu density may 2001 page 6. Pdf static compaction of soils with varying clay content. Perform the field density test using core cutter method.
A study of the static compaction of soils with varying clay contents revealed that static compaction is more efficient than dynamic compaction for clayey soils zhemchuzhnikov and dal toe. Field density test of soil by core cutter method for soil compaction in the field, uses procedure, apparatus and determination of dry density. What is core cutting method used in civil engineering. Density of soil by core cutter method athraa alhassani. Compaction geotechnical engineering soil free 30day. A great deal of judgment is required when performing such work. The most widely used field tests for field compaction are. Most contractors get a feel for these figures, based on their local experience. One of the most common test to determine the field density of soil is the sandcone method. The inplace density of soil is needed for stability analysis, for the determination of the degree of compaction of compacted soil, etc. Pdf is code soil and foundation engineering code free.
It is the process by which the soil grains get rearranged more closely, the volume of air voids get reduced, and the density of soil increases. Volume of cutter is known from its dimensions and in situ unit weight is obtained by dividing soil weight by volume of cutter. Core cutter test dry density of soil by core cutter method. Soil survey standard test method bulk density of a soil core abbreviated name bd test number p14 test method type a version number 2 scope this method covers the determination of the ratio of the mass to the bulk or macroscopic. Core cutter test of soil stepbystep guide method2 the sand replacement method. Soil mechanics lab viva questions and answers pdf free download for civil engineering students 2mark important unit wise questions online test quiz mcqs. This method is only used on finegrained cohesive soils which do not. Like other methods described here, core cutter method of field density test is used to determine the insitu density and compaction of soil embankment or subgrade why core cutter method is used in civil engineer. Pdf is code soil and foundation engineering code free download. Sand replacement method is also known as sand cone method. Dry density of soil by core cutter method for soil compaction. In the spot adjacent to that where the field density by sand replacement or balloon method has been determined, drive the core cutter using the dolly over the core cutter. Field density test of soil by sand replacement method.
This test is done to determine the insitu dry density of soil by core cutter. Sand cone test field density test by sand replacement. Determination of coefficient of permeability of soils a constant head permeability test b variable head permeability test 29 9. There are many types of soil compaction tests which are performed on soil. Aim to determine the field density of soil by core cutter method reference is2720part29determination of dry density of soil in place by the core cutter method apparatus cylindrical core cutter steel rammer steel dolly balance steel rule spade or pickaxe straight edge knife procedure measure the height h and internal diameter d of the core cutter. By using core cutter method, bulk density of soil can be quickly calculated and by determining the moisture content of the soil the dry density of the fill can be calculated and hence the voids percentage.
The apparatus used in this field density test consists of a sand pouring cylinder, with pouring cone at its. The sand replacement method is the most widely used insitu density test. The core cutter method covered by this part is suitable for finegrained soils free from aggregations. Definition of compaction compaction is the process by which soil particles are packed more closely together by dynamic loading such as rolling, tamping or vibration it is achieved through the reduction of air voids with little or no change in water content of soil. Dry density of soil compaction test by core cutter method and calculations road construction civil engineering new video. The driving force behind the compaction problem is the efforts of farming to remain economically viable in a. Proctor soil compaction test procedures, tools and results.
This method is only used on finegrained cohesive soils which do not contain stones. Determination of field density test of soil by core cutter method. Compaction curves should be prepared for all types of soil in the project area, before earthwork commences. In order to evaluate the compaction of soil we have achieved at site. Compaction test of soil is carried out using proctors test to understand compaction characteristics of different soils with change in moisture content. Although the test takes slightly longer to perform than some other insitu density tests, the test may be carried out on most type of materials. Field density test of soil by core cutter method for soil compaction. After the compaction, 15 points were randomly selected for each section, and a total of 60 dry densities were measured using core cutter method, and the same number of deflection tests were measured by fwd at the same locations later. The method is not suitable for dry sand as the same cannot be retained in the cutter while lifting, besides the compaction induced by the vibration generated by the weight falling on the dolly, which affects the natural density. The determination of the field compaction is essential to acquiring the relative compaction of soil. Soil compaction free download as powerpoint presentation. The one minute setting is used for all embankment and subgrade materials.
Civil engineering books, is code by dibyandu pal october 29, 2018. Compaction of soil is the optimal moisture content at which a given soil type becomes most dense and achieve its. 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. Determination of dry density of soils inplace by the corecutter method. If different soils are mixed, then check points should be calculated to ascertain the optimum moisture level for the soil mixture being placed and tested. But it has a major limitation that this test is not suitable for saturated and soft soils. If you want to know field density test of soil by core cutter method.
Determine the insitu dry density of soil by core cutter method. Is code book soil and foundation engineering indian. 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. Stop ramming when the dolly is just around the surface. If you are dealing with a contractor who has not previously worked in the area, you should be wary. Normally sand replacement method is adopted for this purpose. Determination of dry density of soil by core cutter method. These are the corecutter method and the sand replacement method. Proctor density test pdf the standard was originally developed to. A core cutter method b sand replacement method 21 7. All three tests produce results with sufficient accuracy to determine the degree of compaction.
The core cutter method dutch rawstandard 2010, test no. The sand cone method is used for field density test in highway construction. Explain core cutter method for determination of insitu density of soil. In engineering, a foundation is the element of a structure which connects it to the ground and transfers loads. Advantages of sand replacement method over core cutter. The method consists of driving a corecutter volume cc into the soil and removing it, the cutter filled with soil is weighted.
In the field, the dry density test is performed to check the compaction of layers. Today we are going to give you some important information about soil compaction test by core cutter method. There are two conventional methods to determine the field density of soils sand replacement method and core cutter method. Core cutter method is used for determining dry density of the soilfield compaction. Determination of dry density of soil by core cutter method youtube. Compaction compaction is the densification of soils by the application of mechanical energy. Procedure determine the insitu dry density of soil by core cutter method i the internal volume v of the core cutter in cc should be calculated from its dimensions which should be measured to the nearest 0. Proctor showing that for a given compaction effort, the density of soil depends on the type of soil and moisture content.
The field density test of soil is conducted in the field to know whether the specified compaction is achieved or not. Core cutter method is used to determine the insitu density of finegrained natural or compacted soils free from aggregates using a core cutter. Properties of soils study notes for civil engineering. If water content is known in the laboratory, the dry unit weight can also be computed. Determination of dry density of soils inplace by the.
To know about the core cutter method, definitely read this post soil testing in agriculture is a chemical test of a sample of soil which gives information about the quantity of all kinds of nutrients available in the land. Core cutter method of field density test is conducted in the field to know whether the specified compaction is achieved or not in certain cases, it is necessary to determine the density of soil either as it exists naturally in the ground or as it may be compacted in the fill in the former case, this density of soil in place may be used to estimate the comparative strength of the soil. The compaction work began immediately at the end of moisture content test. Measures density of soil for comparing the degree of compaction vs specs. Dry density of soil compaction test by core cutter method and calculations road construction civil. Determination of compaction characteristics of soils a indian standard light compaction test. Dry density of soil compaction test by core cutter method.