Muhamad akmal bin mohamad sharif 03dka16f2030 ainunyasmine binti haslan 03dka16f2023 nirandoal al cheng 03dka16f2029 nur aida binti zainol abidin 03dka16f2027 objective to determine the workability or. Slump test doesnt give accurate results for the low workability of concrete when the slump is test of concrete cubes. The compacting factor test is performed to find out the workability of concrete. Basic slump test components plus a scoop and funnel to aid in filling the slump cone. Slump cone test of concrete civil engineering lab experiment duration. Conclusion slump test to determine the relative water content. Slump test 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. The equipment for the slump test includes a hollow frustum of a cone and a ruler as the measuring device see figure 1. It is not a suitable method for very wet or very dry concrete. Standard test method for the slump of hydraulic cement concrete. This delay in placing concrete is extremely important when the test is on the first load of concrete of the day.
The slump plate should be clean, firm, level and nonabsorbent. Pdf experimental and numerical analysis of asphalt flow in. Even with the increase in knowledge of concrete rheology, the slump test remains. Additional information on workability and quality of concrete. The concrete slump value determined in this test is used to find the watercement ratio in mixes. Pdf concrete workability, quantified by concrete slump, is an important. The purpose of this test is to avoid using the lowquality concrete mix for casting.
The model used to predict the yield stress from the conical slump test was devised by murata. Slump test doesnt give accurate results for the low workability of concrete when the slump is experiment. 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. The test is suitable only for concretes of medium or high workabilities i.
Slump test can be performed at the construction site as well as in the laboratory. This test can be used to measures consistency between the individual batches. The test is carried out in accordance with bs en 123502, testing fresh concrete. When the mortars and concretes for which the final slump was less than 100 mm are excluded, the measured slump times range from 0. Concrete slump test equipment, slump cone, base, rod gilson co. Commence the slump test as soon as possible after sampling of concrete as per standard procedure described in chapter 2. Nov 19, 2015 compaction factor test civil engineering lab experiment duration. If this test is being carried out in the field, the sample mixed concrete shall be. So it is our responsibility to ensure that the concrete is in good quality. Choose from individual products or required components. In a collapse slump the concrete collapses completely. Compaction factor test of concrete for low workability. The goal of the slump concrete is tested to measure the consistency of concrete.
American society for testing and materials astm standards are astm c 143 or astm c143m. This test plays a vital role in ensuring immediate concrete quality in a construction project. Mix is too wet or high workability mix, slump test isnt appropriate for such mix. If a shear or collapse slump is achieved, a fresh sample should be taken and the test is. Concrete slump test measures consistency and workability of fresh concrete, and indirectly, the watercement ratio of the concrete mix.
In a true slump the concrete simply subsides, keeping more or less to shape. By measuring the difference between the mold height and the height of the specimen, researchers are able to evaluate the concrete consistency. With the above objective in mind, each experiment in the manual is divided into three parts i. 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. Even though we have tested its micro contents such as sand, cement, blue metal, and water. Summary of concrete workability test methods the university of. The slump measured is recorded in terms of millimetre of subsidence of the specimen during the test. Add water in measured amounts to bring the slump within the specified range.
The test is considered positive if symptoms are increased in the slumped position and decreased as the patient moves out of neck flexion. The tool typically has an internal diameter of 100 millimetres 3. The concrete slump test is an empirical test that measures the workability of fresh concrete. The scope of this field test is to ensure the concretes workability and consistency before casting it. When the slump test is carried out, following are the shape of the concrete slump that can be observed. The concrete slump test is an onthespot test to determine the consistency as well as workability of fresh concrete. A concrete batch with high slump is an indication that the concrete has to. Standard test method for slump of hydrauliccement 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. Collect a sample of concrete to perform the slum test. If the slump test result is outside of the slump range, correct before placing th e concrete in the work. Fill cone full by volume and rod 25 times with 58inchdi ameter x 24inch long hemispherical tip steel tamping rod. The consistency, or stiffness, indicates how much water has been used in the mix. Schematic diagram of the slump test with reference axis.
Slump cone test of concrete civil engineering lab experiment. The sensitivity and specificity of the slump and straight leg raised tests in patients with lumbar disc herniation. The strength of any building mainly depends on the quality of the materials used. Pdf estimating concrete workability based on slump test with. The test is in conformity with the vietnamese standard tcvn3106 for slump test which is equivalent to the astmc143. Typically, in a slump test, a mould of a given conical shape fig. The slump test is performed on newly mixed concrete. To perform the test, you need a slump cone and a tamping rod. A slump test is a method used to determine the consistency of concrete. Tests on concrete concrete slump test, compression test for. Conclusion slump test to determine the relative water content of concrete, depending on the loss in height slump of a sample obtained from a coneshaped mould.
The nature of the slump observed is slump measured result. The slump test is limited to concretes with the maximum size of aggregate less than 38 mm. Slump plate 500 mm x 500 mm procedure of slump test for concrete. The slump test is the most common method for assessing the flow properties of. The slump test measures the resulting behavior of a compacted inverted cone of concrete under the action of gravity. Mar, 2019 slump test can be done on site to check the concrete mix has expected fluid properties. Choose from individual products or required components contained in our convenient slump test sets. The slump experiments have been conducted using a cylindrical geometry for three wellcharacterized suspensions. In the first experiment, the dataset is randomly divided into 2 sets. In a shear slump the top portion of the concrete shears off and slips sideways. Concrete slump test equipment, slump cone, base, rod. Compaction factor test civil engineering lab experiment duration. In this experiment the slump test and the compacting factor test were used to assess the workability and uniformity of concrete. A concrete slump test is used to determine the correct water content in a batch of concrete.
Pdf the minislump test is a fast, inexpensive and widely adopted method for evaluating the workability of fresh cementitious pastes. Pdf experimental and numerical analysis of asphalt flow. Many factors are taken into account to meet the requirements of concrete strength, and to make sure that a consistence mixture of cement is being used during the process of construction. If the slump and air content meet requirements, complete the discharge. Y ield stress for each of the suspensions was indepenfig. From a practical point of view, two geometrical quantities can be measured as the result of the test.
Test for workability of concrete slump cone youtube. True slump true slump is the only slump that can be measured in the test. Slump test is the most commonly used method of measuring workability of concrete which can be employed either in laboratory or at site of work. Various components were used in producing 3 concrete cylinders with a diameter of 100mm and a height of 200mm while targeting a slump of 75mm and strength of 40 mpa 45 mpa. The sampling and the test is performed under the following rules and laws.
A small variation in slump caused by improper procedure or equipment, may cause the rejection of an entire. In a true slump, the concrete simply subsides and keeping. Compressive strength formula for any material is the load applied at the point of failure to the crosssection area of the face on which load was applied. Concrete having a different mix m15 or m20 etc with the suitable watercement ratio and can be prepared at the site or casting the 6 cubes after conducting the slump test. The slump test is a means of assessing the consistency of fresh concrete.
The theory part gives brief theoretical background of the experiment while the experimental part outlines the procedure for performing the test. Both the top and bottom openings are perpendicular to the vertical axis of the cone. 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. The slump operation shall be completed in a maximum elapsed time of 2 12 minutes. It is a simple and lowcost test prepared at the laboratory or at the site during the work. Discussion from the performed experiment we came to know that our mean slump value was 50mm which describes that it is true slump and its workability is medium. The test is performed to check the consistency of freshly mixed concrete in a specific batch. Slump test of concrete to check the workability of concrete in urduhindi. Estimating concrete workability based on slump test with. In a true slump concrete just subsides shortly and more or less maintain the. Sep 05, 2014 slump cone test of concrete civil engineering lab experiment duration. Chapter 9 standard test procedures tests on concrete may 2001 page 9. Pdf reproducible minislump test procedure for measuring the.
Also the compressive strength were found at last to look up to a. This test method was originally developed to provide a technique to monitor the consistency of unhardened concrete. This method of test specifies the procedure to be adopted. It is used, indirectly, as a means of checking that the correct amount of water has been added to the mix. Conclusion slump test to determine the relative water. The discussion in this manual is divided into three parts viz. It is an indication of lack of cohesion of the mix. It can be carried out from batch to batch to check the workability of freshly made. Slump is the distance, measured in inches, the concrete settles after the slump cone is removed. Provides the basic slump test components in an easycarry configuration. Consistency refers to the ease and homogeneity with which the concrete can be mixed, placed, compacted and finished. Concrete slump test experiment procedure civilology. Thoroughly mix the sample by shovelling to form a cone on the. 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.
Empty the sample from the container onto the sampling try. Compaction factor test of concrete for low workability concrete. Concrete slump test for workability procedure and results. The steel slump cone is placed on a solid, impermeable, level base and. 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. The modified slump test as described was performed on all of the mixtures and the partial slump times which will hereafter be called the slump times are given in the tables in appendix ivvi. Slump cone 100 mm 4 in upper dia, 200 mm 8 in lower dia and 300 mm 12 in height tamping rod 600 mm 24 in high, 15 mm 58 in dia and hemispherical tip at both ends. With the exception of the widely used slump test, the few methods that have been studied extensively have generally failed to gain widespread acceptance. Record the added water on the certificate of compliance. The slump is carried out as per procedures mentioned in astm c143 in the united states, is. 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.
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