Pdf the minislump test is a fast, inexpensive and widely adopted method for. Pdf reproducible minislump test procedure for measuring the. Slump cone test set myers concrete slump testing equipment. Slump test of concrete learning technology youtube. If two consecutive slump tests demonstrate falling away or shearing of the concrete when the cone is lifted, the concrete may lack the necessary plasticity and cohesiveness for the slump test to be applicable. A small variation in slump caused by improper procedure or equipment,may cause the rejection of an entire load of concrete. The attached handle can be rotated above the specimen and used as a guide. Legally binding document step out from the old to the newjawaharlal nehru invent a new india using knowledge. Inspection manual for selfconsolidating concrete in precast. Before adding plasticizers or superplasticizers to your fresh concrete, you need to check the workability of your concrete. Concrete is placed into a cylindrical steel mold with an inner diameter of 36 mm.
With the exception of the widely used slump test, the few methods that have been studied extensively have generally failed to gain widespread acceptance. Sep 16, 2017 in this video you will learn procedure of slump cone test and you wil know the apparatus required in slump cone test suscribe rockers civilian for latest videos and press bell icon. Commence the slump test as soon as possible after sampling of concrete as per standard procedure described in chapter 2. The slump test gives satisfactory results for the concrete mix of medium to high workability and unfortunately, it does not give the correct indication of low workability, which may give zero slumps. Concrete slump test measures consistency and workability of fresh concrete, and indirectly, the watercement ratio of the concrete mix. The measured grout slump should be between 8 and 11 in. Slump, cone base and rod set with rugged, allmetal components designed to easily perform slump testing in accordance with astm c143c143m, aashto t 119mt 119, and bs 1881 standards. The test is carried out using a metal mould in the shape of a conical frustum known as a slump cone or abrams cone, that is open at both ends and has attached handles. 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. About 6 liter of concrete is needed to perform the test, sampled normally. Mar 24, 2020 the apparatus required for conducting slump test are mettalic mould which is in the shape of frustum cone, a tamping rod with bullet end, scale or tape for measuring the slump. 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 mortar mixes were prepared according to astm c 192 and four other procedures.
Major changes in the test procedures and testing machine 1 calibration of testing machines the cs1. The water content was adjusted to compensate for the dry gravel and sand used in the lab. Firstly, make sure that the slump table and cone are damp. Conclusion slump test to determine the relative water content of concrete, depending on the loss in height slump of a sample obtained from a cone shaped mould. Add water, if necessary, in accordance with astm c 94. The slump plate should be clean, firm, level and nonabsorbent. Deluxe slump test set is a complete kit of testing components and accessories for measuring and cleanup. The advantage of this manual test is that it can be used on. Mould or slump cone with a height of 300 mm, bottom diameter 200 mm, and top diameter. Basic slump test components plus a scoop and funnel to aid in filling the slump cone. However, this method lacks a standardised procedure for its experimental implementation, which is crucial to guarantee reproducibility and reliability of the test results. Pdf measurement of slump for soilbentonite sb cutoff wall backfill using a standard.
This study investigates and proposes a guideline procedure for mini slump testing, focusing on. Mar 17, 2018 hello friends, in this video we will learn, how measure slump value by slump cone test. Chapter 17 tex415a, slump of portland cement concrete. The slump cones meet astm criteria for top diameter, bottom diameter and height indicated within the standards.
The slump operation shall be completed in a maximum elapsed time of 2 12 minutes. Test procedure the original mini slump cone test procedure uses a 600 gram sample. Slump test equipment reliance laboratory equipment. The slump test is used for checking the workability of concrete.
Complies with astm c143c143m, aashto t 119mt 119, and. The slump test is a qualityc o n t r ol test because changes in the m e a s u red slump indicate changes in mix proportions, mixing pro c e d u r es, or other factors affecting the n a t u re of fresh concrete. Thoroughly clean the inner surface of frustum cone and it should be free from moisture content and adherence of any old set concrete. Even with the increase in knowledge of concrete rheology, the slump test remains. It is used to check the workability of freshly made concrete for the easy placement of concrete. The slump flow test involves filling a slump cone with scc, lifting. Concrete slump test for workability procedure and results. Kandro subsequently developed a new geometry, called the mini slump cone test. The measured slump must be within a set range, or tolerance, to check the workability of concrete. Theslump test must be performed within 2 12minutes after obtaining the composite sample. Standard slump cone 100 mm top diameter x 200 mm bottom diameter x 300 mm high small scoop. Air content of freshly mixed concrete by the pressure method 41.
Reproducible minislump test procedure for measuring the. Slump cone test set testmak material test equipments. In a true slump the concrete simply subsides, keeping more or less to shape. The equipment mainly used for slump test are followings. Oct 19, 2017 the mini slump test is a fast, inexpensive and widely adopted method for evaluating the workability of fresh cementitious pastes. Concrete slump test experiment procedure civilology. In a shear slump the top portion of the concrete shears off and slips sideways. Pdfs, 000272, 010860398, 010700839, 969003349, 010751711.
It measures the consistency or the wetness of concrete which then gives an idea about the workability condition of concrete mix. Fill cone in three lifts, rodding each one 25 times through the lift depth, each time penetrating the layer below approximately 1 inch for the second and third lifts. True slump is a general subsidence of the mass without b reaking up. Slump cone, scale for measurement, temping rod steel procedure of concrete slump test. Slump is the subsidence of concrete measured in millimeters when tested using a standard procedure. B view of the mold, the rod attached to the base and the top plate at the final position. Slump test of concrete determination of workability of. This materials method describes specific procedures for field inspecting, sampling. Gilson offers a solid selection of slump testing equipment meeting astm c143, aashto t 119, and bs 1881 standards for testing in the lab or field. If one half of the cone slides down, it is called shear slump.
Add water in measured amounts to bring the slump within the specified range. Slump flow test on self compacting concrete for workability. The portable slump cone test set includes all tools necessary to conduct a slump test on a sample of freshly mixed concrete. Slump test is used to determine the workability of fresh concrete. Thoroughly mix the sample by shovelling to form a cone on the sampling tray.
The aggregate used for this test was a blend of three. Pearce can provide concrete in various slumpranges, depending on strength and workabilityneeds. Now place the mould cone on the metallic steel plate or on any smooth surface. In conclusion, the procedures developed in study can be used to produce workable and robust pervious. Choose from individual products or required components contained in our convenient slump test sets. Collect a sample of concrete to perform the slum test. Place the slump cone on the table and stand on the footpieces builtin with the cone.
Extension of spreadslump formulae for yield stress evaluation. Workabilityintegrated mixture proportioning method for. Ensure the place is smooth and horizontal where you going to place the cone. 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. Begin and complete slump test within 212 minutes, maximum. Procedure of slump flow test on self compacting concrete. Slump test measures the consistency or workability of concrete. Conclusion slump test to determine the relative water. Frustum cone has two different diameters one at the top and other at the. The concrete slump test is an onthespot test to determine the consistency as well as workability of fresh concrete. Stand firmly on the footpieces and fill the volume of the cone with the sample. To determine the reference slump value for kistner concrete mix design and to.
Long delivery, waiting, and unloading times, for example, can decrease slump. Fill another onethird of the slump cone and tamp 25 times. Yield stress, slump test, intermediate regime, spread flow, rheology. 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. This manual discusses quality control and testing procedures for scc used in precast elements. The internal surface of the mould is thoroughly cleaned and freed from superfluous moisture and adherence of any old set concrete before commencing test. Astm c143 aci slump test of hydraulic cement concrete. Standard slumping cone is cleaned in preparation for slump testing.
It also ensures that the slump loss is gradual, as evidenced by the slump loss test described below. Cone penetration testing procedure cpt gregg drilling carries out all cone penetration tests cpt using an integrated electronic cone system, figure cpt. Test method for slump flow of selfconsolidating concrete. Testing methods such as flow table, marshcone and kantros minislump cone. Slump cone test for workability in hindu urdu procedure. In a collapse slump the concrete collapses completely. Slump adjustment is a fact of life for concrete contractors, but they should follow these guidelines for its use variations in slump between trucks can be the result of many factors. The unique base design allows all components to be combined into a onepiece unit. Apparatus used for cone test procedure 1measuring scale 2tamping rod. Table 15tex415a, slump of portland cement concrete. Strength and microstructure of classc fly ash and ggbs blend geopolymer activated. Aug 06, 2014 in the slump test, consistency of concrete is expressed n terms of the slump of the concrete mix. Slump test of concretecone test procedure workability of.
The slump cone apparatus for conducting the slump test essentially consists of a metallic mould in the form of a frustum of a cone having the internal dimensions as. Since 1922 slump test has been widely used to check out the concrete workability at the site. Let us check how can we do slump test of fresh concrete. Metallic sheet for placing slump and trowel for pouring concrete in the slump. Concrete work ability test at side slump cone test procedure. Provides the basic slump test components in an easycarry configuration. Slump of portland cement concrete step action 1 dampen both the slump cone and the surface beneath it before initiating the test. The attached handle can be rotated above the specimen and used as a guide to measure the slump. Measure slump from the top of the mold to the displaced original center of the concrete. The flow table test procedure does not conform with astm standard and is as follows. The slump test gives an indication of the consistency, water to cement ratio andor fluidity of the field grout batch. Used to determine the consistency of concrete mixes having medium and high workability. The base is 200 mm 8in in diameter and it has a smaller opening at the top of 100 mm 4 in.
The results of the slump test will determine the method of consolidation. Slumping cone is placed on a steel tray and cone is filled to one third of its capacity. If necessary, modify sampling procedures to fit a specific situation. Slump base plates are available and can be used interchangeably with steel or plastic cones. The slump test conducted with the abrams cone 8,9, the flow test described in the astm standard c1437 10, and the mini slump test performed with molds of various shapes 1112 14 are. More is the slump value more will be the workability. Specification for concrete slump test apparatus number of amendments. Pdf a miniature cone for measuring the slump of soilbentonite. Lastly, the effect of mixing on hydration heat was tested combining the shorter.
It is then held firmly in place during filling of concrete by the operator standing on two foot pieces. Economy slump cone base plate kit deslauriers, inc. Sans 5862 consists of the following parts, under the general title concrete tests consistence of freshly mixed concrete. The slump test result is a measure of the behavior of a compacted inverted cone of concrete under the action of gravity. Combining values from the two systems may result in nonconformance with. The following table describes the steps used in obtaining the slump of portland cement concrete.
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. Slump plate 500 mm x 500 mm procedure of slump test for concrete. The mould is placed on a flat moist nonabsorb surface with the smaller opening at the top. Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. Lightweight, plastic slump cone will not dent or rust and can be cleaned with an acid bath.
The cone takes measurements of tip resistance qc, sleeve resistance fs, and penetration pore water pressure u2. Steel slump cones are available in inch or metric units. Def12the slump test results in various shapes, and according to the profile of slumped concrete, the slump are usually specified at true slump, shear slump or collapse slump. A sample is poured into a mini slump cone, rodded, struck off, and lifted at 2 minutes. Standard slump and flow table tests columbia university. This method provides instructions for checking the critical dimensions of a slump cone used for. Pdf reproducible minislump test procedure for measuring. A little extra effort to observe good practice is the key to ensure that the concrete properties are properly evaluated. Pdf on dec 5, 2014, bhupesh mulik and others published mini slump test procedure find, read and cite all the research you need on researchgate.
When a standard slump cone is filled with concrete and when the cone is lifted up slowly, leaving the moulded concrete unsupported laterally, the. Additionally, all components of the set combine into a onepiece unit. The tool typically has an internal diameter of 100 millimetres 3. 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. Place the slump table on level and stable ground and make sure it will not vibrate while placing the concrete. The remaining paste is remixed at 15,000 rpm for 1. Concrete slump test equipment, slump cone, base, rod.
In case of a shear slump, the slump value is measured as the difference in height between the height of the mould and the average value of the subsidence. Dimensions 200 x 100 x 300mm h steel tamping rod, dia 16 x 600mm l slump metal base plate 450 x 450mm. The mold for the concrete slump test is a frustum of a cone, 300 mm 12 in of height. Effect of mixing method on the minislump spread of portland. If the slump test result is outside of the slump range, correct before placing th e concrete in the work.
Slump flow test for designed flow values between 340 mm and 600 mm 6 stiffening time. The slump cone test can be carried out in the lab or field. Concrete slump test procedure applications, types, uses. Procedure the following table describes the steps used in obtaining the slump of portland cement concrete. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. This edition is technically identical to the first revision sabs sm 8621. 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. Sample of concrete, using the correct sampling procedure, is taken directly from the delivery trucks initial discharge.
In a true slump, the concrete simply subsides and keeping. The flow table test procedure does not conform with astm standard and is as. Slump cone set the portable slump test set includes all tools necessary to conduct a slump test on a sample of freshly mixed concrete. The surface beneath the slump cone must be clean, nonabsorbent, level, rigid and free from vibration.
The test equipment must comply with the standards mentioned above. The apparatus used for doing slump test are slump cone and tamping rod. Empty the sample from the container onto the sampling try. The slump test is done to make sure a concrete mix is workable. Procedure to determine workability of fresh concrete by slump test. Standard test method for slump of hydrauliccement concrete, astm c 143 ref. When the cone is removed, the slump may take one of three forms. Rinse out the slump cone so that the residue from the tested concrete. Fill onethird of the slump cone and tamp 25 times with a rod.