Unlike concrete, where slump testing is common practice, portland cement plaster mixes utilize plasticizing admixtures for workability and pumpability. Pdf reproducible minislump test procedure for measuring the. The third layer is finished off level with the top of the cone. This method provides instructions for checking the critical dimensions of a slump cone used for. Measure slump from the top of the mold to the displaced original center of the concrete. The slump plate should be clean, firm, level and nonabsorbent.
More is the slump value more will be the workability. Concrete work ability test at side slump cone test procedure. To perform the test, you need a slump cone and a tamping rod. Compaction factor test workability test of fresh concrete. Flow table test is also used to identify transportable moisture limit of solid bulk cargoes. The methods described below are intended to instruct the appropriate personnel in the measurement of the critical dimensions of the mold used to test the slump of. The astm standards also regulate the rigidity of the cone. Used to determine the consistency of concrete mixes having medium and high workability. Slump test is used to determine the workability of fresh concrete. About 6 liter of concrete is needed to perform the test, sampled normally.
Deluxe sets also include a scoop, funnel, measuring tape and cleaning brush. 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. It is one of the physical parameters of concrete which affects the finesse, strength and durability. A sample is poured into a mini slump cone, rodded, struck off, and lifted at. 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. The glass disc c attached to the swivel arm shall be moved and placed just on the top of the slump cone fn the pot and before the cone is lifted up, the. The slump flow test, using the traditional slump cone, is the most common field test and is in the process of being standardized by astm. The flow table test or flow test is a method to determine consistency of fresh concrete. The slump is carried out as per procedures mentioned in astm c143 in the united states, is. The slump is carried out as per procedures mentioned in astm c143 in the united. Cement and concrete terminology, aci 116r00, aci manual. The flow table test procedure does not conform with astm standard and is as follows.
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 measured slump must be within a set range, or tolerance, from the target slump. A little extra effort to observe good practice is the key to ensure that the concrete properties are properly evaluated. The slump test the slump test is done to make sure a concrete mix is workable. Let us check how can we do slump test of fresh concrete. A sample is poured into a mini slump cone, rodded, struck off, and lifted at 2 minutes. These grouts are tested using the slump flow test, astm c 1611, that measures the spread of the grout using the slump cone.
Concrete slump test equipment, slump cone, base, rod. Pdf reproducible minislump test procedure for measuring. A small variation in slump caused by improper procedure or equipment,may cause the rejection of an entire load of concrete. Consistency of masonry grout may be measured with a slump cone astm c 143, and slumps of 811 in. Since 1922 slump test has been widely used to check out the concrete workability at the site. The mold for the concrete slump test is a frustum of a cone, 300 mm 12 in of height. Thoroughly mix the sample by shovelling to form a cone on the sampling tray.
A number of companies undertake specialised slump testing. The test is carried out in accordance with bs en 123502, testing fresh concrete. Minislump testing is a reliable method that can be utilised for the. Slumping cone is placed on a steel tray and cone is filled to one third of its capacity.
The tamping rod is of steel 16 mm diameter and 60cm long and rounded at one end. For very stiff or dry mixes it does not show any changes of the slump after removing the slump cone. A separate test, known as the flow table, or slump flow, test, is used for concrete that is too fluid workable to be measured using the standard slump test, because the concrete will not retain its shape when the cone is removed. This study investigates and proposes a guideline procedure for mini slump testing, focusing on. Self consolidating grout is a highly fluid and stable grout mix that does not require consolidation. Fill cone full by volume and rod 25 times with 58inchdi ameter x 24inchlong hemispherical tip steel tamping rod. Procedure of slump flow test on self compacting concrete. Sample of concrete, using the correct sampling procedure, is taken directly from the delivery trucks initial discharge. Mar 17, 2018 hello friends, in this video we will learn, how measure slump value by slump cone test. Slump test of concretecone test procedure workability of. It is used to check the workability of freshly made concrete for the easy placement of concrete. 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. Testing scc self consolidation and highly flowable.
The test is popular due to the simplicity of apparatus used and simple procedure. Sep 16, 2014 here are the steps to do the slump test of concrete. Mar 09, 2017 the slump test is perhaps the most widely used because of the simplicity of the apparatus required and the test procedure. The base is 200 mm 8in in diameter and it has a smaller opening at the top of 100 mm 4 in. Reproducible minislump test procedure for measuring the yield. In the case of concrete containing aggregate of maximum size more than 38 mm, the concrete shall be wetsieved through one and half inch screen to exclude aggregate particles bigger than 38 mm. Oct 19, 2017 the mini slump test is a fast, inexpensive and widely adopted method for evaluating the workability of fresh cementitious pastes. Slump test sets offer convenience and assurance that testing can be readily performed in accordance with astm and aashto standards. Slump flow test on self compacting concrete for workability. Illinois test procedures for other materials may be included.
It is not applicable to nonplastic and noncohesive concrete. Concrete slump test procedure, advantages and limitations. Metallic sheet for placing slump and trowel for pouring concrete in the slump. Moisten the base plate and inside of slump cone, place base plate on level stable ground and the slump cone centrally on. It is critical that grout consistency permit the complete filling of void space without segregation of ingredients. So it is our responsibility to ensure that the concrete is in good quality. Tests on concrete concrete slump test, compression test for.
Standard test method for slump of hydrauliccement concrete. Several test procedures have been successfully employed to measure the plastic properties of selfconsolidating concrete. Empty the sample from the container onto the sampling try. Reproducible mini slump test procedure for measuring the yield stress of cementitious pastes article pdf available in materials and structures 506 december 2017 with 989 reads. Before adding plasticizers or superplasticizers to your fresh concrete, you need to check the workability of your concrete. Slump test equipment reliance laboratory equipment. It also ensures that the slump loss is gradual, as evidenced by the slump loss test described below. Test procedure the original mini slump cone test procedure uses a 600 gram sample. The purpose of this test is to avoid using the lowquality concrete mix for casting. No matter, slump test is a leader among the above tests. Each layer is rodded 25 times to ensure compaction. Summary of concrete workability test methods the university of. Sep 22, 2017 the slump test is used to ensure uniformity for different loads of concrete under field conditions.
Standard sets include a slump cone, base and tamping rod. Do not take samples at the beginning or the end of the discharge. Warningfresh hydraulic cementitious mixtures are caustic and may cause chemical burns. It gives quick result about the workability of concrete. The slump test is done to make sure a concrete mix is workable. 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. This document describes 61 test methods for measuring concrete workability. This test method was originally developed to provide a technique to monitor the consistency of unhardened 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 know and speak the laws that govern them. Tools standard slump cone 100 mm top diameter x 200 mm bottom diameter x 300 mm high small scoop bulletnosed rod 600 mm long x 16 mm diameter rule slump plate 500 mm x 500 mm. It is then held firmly in place during filling of concrete by the operator standing on two foot pieces. Concrete slump test the concrete slump test measures the consistency of fresh. The scope of this field test is to ensure the concretes workability and consistency before casting it. Begin and complete slump test within 212 minutes, maximum.
It measures the consistency or the wetness of concrete which then gives an idea about the workability condition of concrete mix. 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. Fill the mould with the prepared concrete mix in 4 approximately equal layers. The measured slump must be within a set range, or tolerance, to check the workability of concrete. 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. The mould is placed on a flat moist nonabsorb surface with the smaller opening at the top. Slump test of concretecone test procedure workability. The procedure of slump test is simple and easy than any other workability test. Evaluation of mini slump cone test, mlr9701, 2000 iowa. The slump test is used for checking the workability of concrete. Test for workability of concrete slump cone youtube.
We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. The consistency of grout affects its strength and other properties. It is used primarily for assessing concrete that is too fluid workable to be measured using the slump test, because the concrete will not retain its shape when the cone is removed. The concrete slump test is an onthespot test to determine the consistency as well as workability of fresh concrete. The mold for the test is in the form of the frustum of a cone having height 30 cm, bottom diameter 20 cm and top diameter 10 cm.
Apparatus used for cone test procedure 1measuring scale 2tamping rod. Slump of hydraulic cement concrete fop for aashto t 119 scope this procedure provides instructions for determining the slump of hydraulic cement concrete in accordance with aashto t 11918. The test devices described in the patent documents listed in table 6 typically only. Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. The slump test is a practical means of measuring the workability.
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. Concrete slump test procedure applications, types, uses. The slump test indicates the behavior of a compacted concrete cone under the action of gravitational forces. The steel slump cone is placed on a solid, impermeable, level base and filled with the fresh concrete in three equal layers.
Standard test method for the slump of hydraulic cement concrete. Under laboratory conditions, with strict control of all concrete materials, the slump is generally found to increase proportionally with the water content of a given concrete mixture, and thus to be inversely related to concrete strength. A smaller version of the standard, concrete slump cone test is shown to. Slump cone test is a simple and traditional test extensively used at sites to assess the workability of the fresh concrete. If this test is being carried out in the field, the sample mixed concrete shall be obtained. On removing the cone, the slump is measured photo sequence 1.
Standard slumping cone is cleaned in preparation for slump testing. The slump operation shall be completed in a maximum elapsed time of 2 12 minutes. Concrete slump test to determine the workability of concrete mix. Slump test measures the consistency or workability of concrete. Concrete slump test for workability procedure and results.
Hello friends, in this video we will learn, how measure slump value by slump cone test. Concrete workability, high performance concrete, slump, compacting factor. The concrete is levelled off with the top of the cone. Inexpensive and portable apparatus is required for this test. Dimensions 200 x 100 x 300mm h steel tamping rod, dia 16 x 600mm l slump metal base plate 450 x 450mm. Procedure to determine workability of fresh concrete by slump test. If, in the repeat test also, the specimen should shear, the slump shall be measured and the fact that the specimen sheared, shall be recorded.
Collect a sample of concrete to perform the slum test. Slump tests the slump test is performed on newly mixed concrete. Slump cone testing of portland cement plaster for determining water to cement ratio is not considered applicable. Clean the internal surface of the mould and apply oil. What are the difference between tender and contract documents. Concrete is placed into a cylindrical steel mold with an inner diameter of 36 mm. Concrete slump test generally concrete slump value is used to find the workability, which indicates watercement ratio, but there are various factors. 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. 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. This test indicates the watercement ratio and the properties of materials and also admixture etc. The slump cone is filled with fresh concrete in layers, tamping between each to remove voids. The slump test result is a measure of the behavior of a compacted inverted cone of concrete under the action of gravity.
We usually perform slump test on site and lab due its ease and results. Any slump specimen which collapses or shears off laterally gives incorrect result and if this occurs the test shall be repeated with another sample. Nd t 191 density of soil inplace by the sand cone method. Slump cone, scale for measurement, temping rod steel procedure of. Concrete slump test experiment procedure civilology. If the slump test result is outside of the slump range, correct before placing th e concrete in the work. If necessary, modify sampling procedures to fit a specific situation. B view of the mold, the rod attached to the base and the top plate at the final position. The water content was adjusted to compensate for the dry gravel and sand used in the lab. Astm c143 aci slump test of hydraulic cement concrete. Concrete slump test procedure applications, types, uses and. 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. Record average of four cone thickness measurements.
Commence the slump test as soon as possible after sampling of concrete as per standard procedure described in chapter 2. It states in the procedure that when the cone is removed, it should be lifted up vertically, without any rotational movement at all. This research examined the mini slump cone test procedure to determine the repeatability of the results obtained from two different testing procedures, effect of wc ratio, lifting rate of the cone, and accuracy of the test using a standard sample. The aashto standard test procedure reports the percentage of material finer than the no. 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. Sep 05, 2014 the ease with which one can use concrete is called workability. Stand firmly on the footpieces and fill the volume of the cone with the sample.
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