Reclamation uses the rapid compaction test usbr 7240 5, astm d 5080 6. Prepare sample with an estimated moisture content of zero to 3% below optimum moisture. Modified proctor test an overview sciencedirect topics. Slump test doesnt give accurate results for the low workability of concrete when the slump is compaction tests are now made using nuclear density gages that employ a cesium element. Soil compaction testing otherwise known as density tests are performed in order to determine the soil compaction level. Standard proctor test procedure apparatus calculation. Scope this test method describes the procedure for determining the inplace density and moisture of earthwork through the use of a sand cone or volumeter apparatus. If a heavier degree of compaction corresponding to the bs heavy compaction test section 6. In order to overcome the time and effort of carrying out dynamic compaction test, a laboratory procedure is devised to determine the omc and mdd values by using static compaction effort. Unconfined compression test purpose, procedure, lab report. Intelligent compaction coldinplace recycling test strip procedure pdf the following is a sample test strip report that meets the requirements of the intelligent compaction cir specifications. We know that the conditions of site and that of the laboratory are different altogether. Compaction tests results vary with the input compactive effort, usually measured in foot pounds per cubic foot of soil.
Compaction equipment can efficiently compact the soil up to a limited depth. Compaction factor test workability test of fresh concrete. The results obtained by these tests are used with the empirical curves to determine the thickness of pavement and its component layers. Rain, for example, may transform soil into a plastic state or even into a liquid. If the engineer elects to test, satisfactory compaction is defined as 90% 95% in the density. Internal diameter of mould 100 mm, height of mould 127. Nuc gages can have significant errors if the extendable probe is located next to a rock 3 inches across. An improved california bearing ratio test procedure colin a.
Moisture content of the soil is vital to proper compaction. 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. Test procedure form sm 417b is used for recording the compaction test data. Compaction tests results vary with the input compactive effort, usually measured in footpounds per cubic foot of soil. The apparatus used in this field density test consists of a sand pouring cylinder, with pouring cone at its. Measures density of soil for comparing the degree of compaction vs specs. Guidelines for earthwork construction control testing of gravelly soils. Compaction test of soil is also known as proctors test is done to understand. The line of optimum moisture contents is usually around 85% saturation and the optimum moisture content decreases with increasing compactive effort. Jan 27, 2019 standard proctor test or proctor compaction test was the original test devised by an american engineer ralph r. Field density test of soil by sand replacement method. Soils field testing dig a hole with the auger, trowel, or other tools test hole must be approx. Normally sand replacement method is adopted for this purpose.
Reddy and jagadish 1993 presented a new static compaction test for soils in which. 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. In this state, soil has very little or no loadbearing ability. G s bulk saturated surface dry shall be assumed to be 2. In other words, the density is a comparison of the weight of one cubic foot of material in the field. In order to overcome the time and effort of carrying out dynamic compaction test, a. This is the most widely used method for the design of flexible pavement. The field density test of soil is conducted in the field to know whether the specified compaction is achieved or not.
Astm d698 12e2 standard test methods for laboratory. Control of the degree of compaction is necessary to achieve a satisfactory result at a reasonable cost. Modified proctor aashto t180astm d1557 testing procedures more. This focused attention on the importance of subgrade compaction, leading to the modified proctor compaction test in 1946. Enter the required project information at the top of the form. Mould has detachable collar and base plate assembly as in the case of standard proctor test. Cut a soil specimen so that the ratio ld is approximately between 2 and 2. Compaction factor test for concrete test for workability. Compaction factor test is the workability test for concrete conducted in laboratory. Hence, the fills or embankments are compacted in several layers, called lifts. Jul 19, 2014 a typical field testing procedure to determine the load bearing capacity of t. Compaction test light weightstandard proctor compaction is 2720part vii1980 reaffirmed2011 theory.
This compaction is a comparison of the laboratory compaction proctor to the field density and recorded as a percentage. Proctor showing that for a given compaction effort, the density of soil depends on the type of soil and moisture content. Compaction is a type of mechanical stabilization where the soil mass is densified with the application of mechanical energy also known as compactive effort. Civil engineering animated videos, civil engineering videos social media. Compaction factor test for concrete workability method and. In geotechnical engineering, soil compactionis the process in which a stress applied to a soilcauses densification as air is displaced from the pores between the soil grains. Proctor soil compaction test procedures, tools and results.
Procedure take a representative sample of air dried soil of about 5 kg soil not susceptible to crushing during compaction or 3 kg from 15 kg sample soil susceptible to crushing during compaction passing through 19mm is sieve and mix thoroughly with a. Compaction test of soil is carried out using proctors test to understand compaction characteristics of different soils with change in moisture content. Us army corps of engineers developed modified proctor test which used greater levels of compaction and produced higher densities. Compaction test proctor test civil engineering notes. The compaction factor is the ratio of weights of partially compacted to fully compacted concrete. Both the magnitude of compacting energy and the type of compactive effort influence to a greater. Compaction factor test of concrete for low workability.
The compacting factor test is performed to find out the workability of concrete. May 18, 2018 this video animation, animated video explains the procedure for determination of workability by compaction factor test. See that the inner surfaces of conical hoppers should be free from moisture and apply grease to it. Laboratory compaction tests provide the basis for control procedures used on site. Generally before any soil compaction occurs various samples of the proposed embankment or fill is analyzed in the lab. Place one foot on the drill rod guide to keep it in position. Modified proctor test was alter adopted by aashto and astm. Reclamations procedure for determination of percent compaction is. The compaction factor test is carried out to measure the degree of workability of fresh concrete with regard to the internal energy required for compacting the concrete thoroughly. Chapter 6 standard test procedures determination of insitu density may 2001 page 6. Compaction on site is usually effected by mechanical means such as rolling, ramming or vibrating. Empirical evidence suggests that the percentage of coarse fraction content on soil has an influence on the soil optimum moisture content omc and soil maximum dry density mdd.
An improved california bearing ratio test procedure. The dry unit mass specified is normally the minimum percent compaction allowed by using the agencys field compaction specification. Evaluation of laboratory compaction procedures for specification of. All modified proctor compaction tests were performed in accordance with the astm. Standard proctor test or proctor compaction test was the original test devised by an american engineer ralph r. The response of soil to moisture is very important, as the soil must carry the load yearround. Wayne lee the california bearing ratio cbr test is one of the most common strength tests conducted to evaluate subgrade quality of soils and the suitability of soils for sub base and base courses in pavements.
Sand replacement method is also known as sand cone method. It was developed by road research laboratory in united kingdom and is used to determine the workability of concrete. The proctor compaction test is a test that compacts the soil material at various moisture. The lightly greased mould with driving dolly fixed is placed in position with the cutting edge on the prepared surface. Amount of compaction testing odot compaction testing 203, 205 one test per 2,000 cy 204, 206 one test per 3,000 sy 304, 411 three tests per 5,000 sy one per lift 503 one test every 5th lift 603 one test every 5th lift or one test every 50 lf 840 sgb one test per 300 lf for every lift. In rocky fills the operator should always rotate the probe 90 degrees and take a second reading, recoding the lower of the two values. D1557 12 standard test methods for laboratory compaction characteristics of soil using modi. Method statement for excavation compaction and backfilling. The california bearing ratio test is penetration test meant for the evaluation of subgrade strength of roads and pavements. Indian institute of technology gandhinagar department of. The qaqc inspector shall be responsible for the necessary inspections and tests to be carried out for all the activities involved in the excavation, such as excavation bottom compaction test and as per the inspection test plan itp. A modified proctor test is conducted by placing soil in a standard mold and compacted with a standard ram. The proctor compaction test is a laboratory method of experimentally determining the.
Use the following intelligent compaction test strip procedure to establish cir intelligent compaction target values. Pdf compaction of soil at maximum dry density is required in many. Compaction control the specifications require that each lift of the embankment be compacted to the satisfaction of the engineer. Compaction factor test of concrete for low workability concrete. D69812e2 standard test methods for laboratory compaction characteristics of soil using standard effort 12 400 ftlbfft3 600 knmm3 density water content particle size.
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