A sample is poured into a mini slump cone, rodded, struck off, and lifted at 2 minutes. For very stiff or dry mixes it does not show any changes of the slump after removing the slump cone. The apparatus used for doing slump test are slump cone and tamping rod. This is a good laboratory test to measure indirectly the workability of concrete. The information provided herein is for educational purposes and does.
Procedure for workability test of concrete vee bee test these are the various steps involved in vee bee test procedure. The internal surface of the mould is thoroughly cleaned and freed from superfluous moisture and adherence of any old set concrete before commencing test. A small variation in slump caused by improper procedure or equipment,may cause the rejection of an entire load of concrete. If the sample is transported to a different location for specimen fabrication, remix the sample to ensure uniformity. Slump test is the most commonly used method of measuring consistency of concrete which can be employed either in laboratory or at site of work. Pdf the minislump test is a fast, inexpensive and widely adopted method for. Measure slump from the top of the mold to the displaced original center of the concrete. Concrete slump test procedure applications, types, uses. This standard has been prepared with this object in view. The concrete slump test is known as standard test method for slump of. Slump test sets offer convenience and assurance that testing can be readily performed in accordance with astm and aashto standards. Mar, 2019 since 1922 slump test has been widely used to check out the concrete workability at the site. It is used to check the workability of freshly made concrete for the easy placement of concrete.
In the united kingdom, the standards specify a slump cone height of 300 mm, a bottom. The remaining paste is remixed at 15,000 rpm for 1. Use a damp cloth to clean the top of the table and the inner. The time required for the shape of concrete to change from slump cone shape to cylindrical shape in seconds is known as vee bee degree. Standard sets include a slump cone, base and tamping rod. The flow table test procedure does not conform with astm standard and is as follows. Prepare a leveled surface and place the flow table on the surface. Test for workability of concrete slump cone duration. In a collapse slump the concrete collapses completely. Slump test measures the consistency or workability of concrete.
The procedure of slump test is simple and easy than any other workability test. Place the slump cone in the sheet metal pot of the consistometer and fill it with fresh concrete as described in the slump test. It is used to check the workability of freshly made. Slump test procedure is to determine the workability of concrete. Since 1922 slump test has been widely used to check out the concrete workability at the site. To measure the consistency of concrete by using slump cone apparatus required. The slump test indicates the behavior of a compacted concrete cone under the action of gravitational forces. The minislump test is a variation of the slump test with reduced size. Standard test method for slump of hydrauliccement concrete. No matter, slump test is a leader among the above tests. Schematic slump cone apparatus the slump cone apparatus for conducting the slump test essentially consists of. Slump cone test is a simple and traditional test extensively used at sites to.
Scope this standard covers the test method for slump flow of selfcompacting concrete with a maximum coarse aggregate size of 40 mm or less. Inexpensive and portable apparatus is required for this test. Fill cone full by volume and rod 25 times with 58inchdi ameter x 24inch long hemispherical tip steel tamping rod. Stand firmly on the footpieces and fill the volume of the cone with the sample. The mold for the concrete slump test is a frustum of a cone, 300 mm 12 in of height.
Verify critical dimensions of the cone calibration procedure. When the cone is removed, the slump may take one of three forms. It states in the procedure that when the cone is removed, it should be lifted up vertically, without any rotational movement at all. The concrete slump test measures the consistency of fresh concrete before it sets.
The base is 200 mm 8in in diameter and it has a smaller opening at the top of 100 mm 4 in. In a true slump the concrete simply subsides, keeping more or less to shape. Slump flow test on self compacting concrete for workability. Concrete slump test procedure, advantages and limitations. A little extra effort to observe good practice is the key to ensure that the concrete properties are properly evaluated. Commence the slump test as soon as possible after sampling of concrete as per standard procedure described in chapter 2. Slump test of concretecone test procedure workability. Vee bee testdefinition and procedure workability of. This test consists of a vibrating table, a metal pot, a sheet metal cone, a standard iron rod. Moisten the base plate and inside of slump cone, place base plate on level stable ground and the slump cone centrally on the base plate and hold down firmly. Concrete slump test uji slump beton sharing materi.
Slump test is the most commonly used test of measuring workability of concrete. Collect a sample of concrete to perform the slum test. Jun 03, 2012 concrete slump test uji slump beton mengukur nilai slump uji slump adalah suatu uji empirismetode yang digunakan untuk menentukan konsistensikekakuan dapat dikerjakan atau tidakdari campuran beton segar fresh concrete untuk menentukan tingkat workability nya. Slump plate 500 mm x 500 mm procedure of slump test for concrete. Each layer is rodded 25 times to ensure compaction. Slump test is an empirical test that measures workability of fresh concrete, it is performed to check consistency of freshly made concrete.
In slump test we have to provide a uniform base and it requires 4 times for compacting the concrete to fill the cone while without disturbing the bottom layer of. Concrete slump test or slump cone test is to determine the workability or. In the united kingdom, the standards specify a slump cone height of 300 mm, a bottom diameter of 200 mm and a top diameter of 100 mm. Oct 03, 2017 concrete slump test tutorial matt risinger. Astm c143 slump test of hydraulic cement concrete preparing for the slump test all the equipment must be dampened prior to testing, including the base on which the slump cone is set. This standard has been prepared with this object in view and provides a guide to the sampling, analysis, and determination of linear changes of concrete. After the material is introduced into the water, the mixing speed in increased from 1,200 rpm to 15,000 rpm for 1 minute.
The slump operation shall be completed in a maximum elapsed time of 2 12 minutes. The mini slump test is a variation of the slump test with reduced size. In a shear slump the top portion of the concrete shears off and slips sideways. And more importantly, the stepbystep procedure of slump test followed by the list of cautions during the test and way to measure the workability from the test result. Sep 16, 2014 here are the steps to do the slump test of concrete. Concrete slump test procedure applications, types, uses and. Slump test procedure field testing 1 to obtain a representative sample, take samples from two or more regular intervals throughout the discharge of the mixer or truck. Thoroughly mix the sample by shovelling to form a cone on the sampling tray. Concrete slump test experiment procedure civilology.
To perform the test, you need a slump cone and a tamping rod. We usually perform slump test on site and lab due its ease and results. Concrete is placed into a cylindrical steel mold with an inner diameter of 36 mm. Tests on concrete concrete slump test, compression test for. It can be employed either in laboratory or at site of work. Concrete slump test equipment, slump cone, base, rod. Summary of concrete workability test methods the university of. This research examined the mini slump cone test procedure to.
One of the major problems that you had faced in your field work is concrete compaction during mixing. Flow table test to measure the flow value of concrete. Astm c143 aci slump test of hydraulic cement concrete. Evaluation of mini slump cone test iowa publications online. In fact the cone is smaller than the abrams cone h 57 mm. Feb 01, 2009 we use your linkedin profile and activity data to personalize ads and to show you more relevant ads. When a truck mixer reaches the checkpoint, the quality engineer should check the delivery note to ensure that the concrete delivered is in compliance with the concrete grade required for the concrete element to be cast. The concrete slump test is an onthespot test to determine the consistency as well as workability of fresh concrete.
We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Slump tests the slump test is performed on newly mixed concrete. The water content was adjusted to compensate for the dry gravel and sand used in the lab. Slump test of concretecone test procedure workability of. The steel slump cone is placed on a solid, impermeable, level base and filled with the fresh concrete in three equal layers.
Obtain samples for strength tests by the same procedure as for slump or air test, except obtain the sample from the middle half of the load whenever possible. The slump test is a practical means of measuring the workability. 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. Procedure to determine workability of fresh concrete by slump test. After mix design, you may have doubt, is this design will be ok. Concrete slump test for workability procedure and results. Test procedure the original mini slump cone test procedure uses a 600 gram sample. The concrete slump test is known as standard test method for slump of hydrauliccement concrete and carries the code astm c 143 or aashto t 119. Slump test is an empirical test that measures workability of fresh ppt. Begin and complete slump test within 212 minutes, maximum. This method provides instructions for checking the critical dimensions of a slump cone used for. Jun 10, 2015 slump test of concrete to measure workability slump cone test of fresh concrete object. Procedure of slump flow test on self compacting concrete. It gives quick result about the workability of concrete.
Move the glass disc attached to the swivel arm and place it just on top of the slump cone in. It measures the consistency or the wetness of concrete which then gives an idea about the workability condition of concrete mix. Fill cone full by volume and rod 25 times with 58inchdi ameter x 24inchlong hemispherical tip steel tamping rod. Pdf reproducible minislump test procedure for measuring the. The cone is placed at the centre of a square of glass or other similar material on which are depicted diagonals and medians. The slump test result is a measure of the behavior of a compacted inverted cone of concrete under the action of gravity. Find powerpoint presentations and slides using the power of, find free presentations research about slump test ppt. The third layer is finished off level with the top of the cone. View and download powerpoint presentations on slump test ppt. Slump cone test is a simple and traditional test extensively used at sites to assess the workability of the fresh concrete. 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. Concrete slump test or slump cone test is to determine the workability or consistency of concrete mix prepared at the laboratory or the construction site during the progress of the work. Ensure the place is smooth and horizontal where you going to place the cone.
Standard test method for the slump of hydraulic cement concrete. Measure the amount of slump in inches from the bottom of the straight edge to the top of the slumped concrete at a point over the original center of the base. Deluxe sets also include a scoop, funnel, measuring tape and cleaning brush. Slump cone, scale for measurement, temping rod steel procedure of. Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. Do not take samples at the beginning or the end of the discharge. Empty the sample from the container onto the sampling try. Steel slump cone kit huge thanks to make sure your. This test is performed to measure consistency or workability of fresh concrete, where the nominal maximum size of aggregate does not exceed 38 mm using slump test apparatus. If this test is being carried out in the field, the sample mixed concrete shall be obtained. It is used conveniently as a control test and gives an indication of the uniformity of concrete from batch to batch. The test methods used should be simple, direct and convenient in their application. Sharing materi perkuliahan teknik sipil untuk mengembangkan blog ini, mohon pembaca memberikan komentar dan sharing ke media social lainnya seperti facebook dan twitter. The astm standards also regulate the rigidity of the cone.