Collect a sample of concrete to perform the slum test. Lab report 1 in a table, display the actual amount of material used and the theoretical calculated amount of material used. 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. To determine the workability of fresh concrete of given proportions by slump test and compacting factor test. Estimating concrete workability based on slump test with. The test result is only valid if it yields a true slump. A separate test, known as the flow table, or slumpflow, 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. The remaining paste is remixed at 15,000 rpm for 1.
Mar 09, 2017 the slump test is perhaps the most widely used because of the simplicity of the apparatus required and the test procedure. American society for testing and materials astm standards are astm c 143 or astm c143m. If the slump test result is outside of the slump range, correct before placing th e concrete in the work. Slump test is an empirical test that measures workability of fresh ppt.
The slump test is carried out on fresh concrete to determine its workability, which is the ease of placing, consolidating, and finishing freshly mixed concrete. Slump cone test of concrete civil engineering lab experiment. A sample is poured into a mini slump cone, rodded, struck off, and lifted at 2 minutes. 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. Compaction factor test civil engineering lab experiment. In a true slump, the concrete simply subsides and keeping. 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. The slump test is the most common method for assessing the flow properties of fresh concrete.
The water content was adjusted to compensate for the dry gravel and sand used in the lab. 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. Diagnostic accuracy of the slump test for identifying. Compaction factor test of concrete for low workability.
Type of slump the slump measured shall be recorded in terms of millimetres of subsidence of the specimen during the test. Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. Concrete slump test is a measurement of concretes workability, or fluidity. The concrete slump test is an onthespot test to determine the consistency as well as workability of fresh concrete. For the third slump test, our group successfully got true slump with 710 mm slump. Oct 02, 2016 slump test of concrete workability of concrete official website.
Lab 1 concrete proportioning, mixing, and testing supplemental lab manual prepared by mutlu ozer objectives concepts background experimental procedure report requirements discussion objectives students make concrete according to the mix design. The flow table test procedure does not conform with astm standard and is as follows. Concrete slump test procedure applications, types, uses and. Tests on concrete concrete slump test, compression test for. Slump test and compacting factor test of fresh concrete. A little extra effort to observe good practice is the key to ensure that the concrete properties are properly evaluated. Find powerpoint presentations and slides using the power of, find free presentations research about slump test ppt. Additional information on workability and quality of concrete. The data used for this lab report was not gathered from the student run experiments, but rather from standardized testing performed by the laboratory professor, to ensure accurate and consistent results. The compacting factor test is performed to find out the workability of concrete. This test plays a vital role in ensuring immediate concrete quality in a construction project. Cube and slump test report free download as word doc. After the slump test, the concrete mix was then cast into 4 cylinders using the.
Its an indirect measurement of concrete consistency or stiffness. Slump test is an empirical test that measures workability of fresh concrete, it is performed to check consistency of freshly made concrete. Nov 19, 2015 slump cone test of concrete civil engineering lab experiment. View and download powerpoint presentations on slump test ppt. A separate test, known as the flow table, or slump flow, test, is used for concrete that is too fluid workable to be. A slump test was carried out and a result of 150mm was obtained then an air content test. It gives quick result about the workability of concrete. It can be carried out from batch to batch to check the workability of freshly made.
The slump test is a practical means of measuring the workability. Even with the increase in knowledge of concrete rheology, the slump test remains. Adding a painlocation criterion improved specificity. Slump test provides immediate result about the consistency and workability of concrete, that is the reason it is used widely in all over the world since 1922. It is not a suitable method for very wet or very dry concrete. Some forms are submitted to the mndot concrete engineering unit and all other forms are filed in the project file for internal use only.
Test specimen shall be a representative sample based on. 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. In the freshly prepared cement paste, small particles interact via colloidal forces, such as vander waals, electrostatic repulsion, steric hindrance, and hydrogen bonding, and some bigger particles interact via direct contact like friction or collisions. Slump test of concrete learning technology youtube. Slump test of concrete workability of concrete official website. Concrete slump test for workability procedure and results. Lab report 4989259 lab report for construction materials concrete. The university of minnesota soil test report contains five sections that with one exception we will go through in the same order as they appear in the report. 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. If the slump and air content meet requirements, complete the discharge. Field concrete technician study guide 9 gdt 27 slump of portland cement concrete the purpose of the slump test is to determine the consistency of the concrete. The slump should be reported to the nearest 5mm and the type of slump i.
Slump and kelly ball testing would be performed to investigate workability of mixture. Lab report4989259 lab report for construction materials. The stiffness of the concrete mix should be matched to the requirements for the finished product quality. Concrete is placed into a cylindrical steel mold with an inner diameter of 36 mm. Test specimen shall be a representative sample based on the following table. Lab report4989259 lab report for construction materials concrete. Conclusion slump test to determine the relative water content. For slump measurements made on concrete taken from the same. Calculations for the mix design can be seen in appendix a of this report. No matter, slump test is a leader among the above tests.
The slump test indicates the behavior of a compacted concrete cone under the action of gravitational forces. The objective of this lab is to understand the compressive and tensile properties of hardened. Any slump specimen which collapses or shears off laterally gives incorrect result and if this occurs the. This is a measure of the relative fluidity or mobility of the concrete mixture. A small variation in slump caused by improper procedure or equipment,may cause the rejection of an entire load of concrete. Concrete slump test theory and lab test civil engineering. We usually perform slump test on site and lab due its ease and results. Structural concrete properties and practice postgraduate course. It is a simple and lowcost test prepared at the laboratory or at the site during the work. The slump test is carried out on fresh concrete to determine its workability, which is the. The test was repeated again, return used concrete to the mixer and remix for 30 seconds. Concrete slump test procedure applications, types, uses. The slump test was highly sensitive in identifying nep within the study sample.
This test can be used to measures consistency between the individual batches. Scribd is the worlds largest social reading and publishing site. Test procedure the original mini slump cone test procedure uses a 600 gram sample. After the material is introduced into the water, the mixing speed in increased from 1,200 rpm to 15,000 rpm for 1 minute. Slump plate 500 mm x 500 mm procedure of slump test for concrete. The pattern of slump is shown true slump shear slump collapse slump. This delay in placing concrete is extremely important when the test is on the first load of concrete of the day. Stand firmly on the footpieces and fill the volume of the cone with the sample. A separate test, known as the flow table, or slumpflow, test, is used for concrete that is too fluid workable to be.
Concrete slump test is a simple and lowcost test which is prepared in the laboratory or at the construction site for the determination of workability and consistency. Using this test, the slump can be derived by measuring the drop from the top of the slumped fresh concrete. The slump plate should be clean, firm, level and nonabsorbent. Sep 19, 2017 2 slump test 9192017 slump test laboratory report introduction slump is a measurement of concretes workability, or fluidity. The slump test is perhaps the most widely used because of the simplicity of the apparatus required and the test procedure. Sep 22, 2017 the slump test is used to ensure uniformity for different loads of concrete under field conditions. Mar, 2019 slump test can be done on site to check the concrete mix has expected fluid properties. The consistency, or stiffness, indicates how much water has been used in the mix. This report was initiated by a concrete laboratory report brief given out by professor mark alexander in the civ5002z. 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.
The slump test is used to ensure uniformity for different loads of concrete under field conditions. Workability of a concrete signifies the full compaction of concrete using a required or reasonable amount of work which helps to achieve the desired possible density or void of fresh concrete resulting better strength and durable concrete structure and helpful to maintain. A slump test was carried out and a result of 150mm was obtained then. Standard test method for the slump of hydraulic cement concrete. Slump test doesnt give accurate results for the low workability of concrete when the slump is 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. It does not measure all factors contributing to workability, nor it is always representative of. Conclusion slump test to determine the relative water. 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. Compaction factor test civil engineering lab experiment duration. With the exception of the widely used slump test, the few methods that have been studied extensively have generally failed to gain widespread acceptance. Combining the diagnostic outcomes was very effective in identifying all those without nep and half of those with nep.
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