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The slump test is the most widely used device worldwide. In fact, the test is so well known that often the terms workability and slump are used interchangeably, even though they have different meanings.
• Specifications are typically written in terms of slump.
• The slump test is simple, rugged, and inexpensive to perform. Results are obtained immediately.
• The results of the slump test can be converted to yield stress in fundamental units based on various analytical treatments and experimental studies of the slump test.
• Compared to other commonly used concrete tests, such as for air content and
compressive strength, the slump test provides acceptable precision.
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Conclusion of slump test?
The difference in level between the height of the mould and that of the highest point of the subsided concrete is measured. This difference in height in mm. is taken as Slump of Concrete.
What are the slump types which can be occurred in concrete?
ture slump
What is the purpose of Slump Test and explain the procedure of the testing?
Slump test is the most commonly used method of measuring workability of concretewhich can be employed either in laboratory or at site of work.ProcedureThe mould is placed on a smooth, horizontal,rigid and non-absorbant surface The mould is then filled in four layers, each approximately 1/ 4 of the height of the mould. Each layer istamped 25 times by the tamping rod taking Slump Test Apparatus care to distribute the strokes evenly over the cross section. After the top layer has been rodded,the concrete is struck off level with a trowel and tamping rod. The mould is removed from the concrete immediately by raising it slowly and carefully in a vertical direction. This allows theconcrete to subside. This subsidence is referred as SLUMP of concrete. The difference in levelbetween the height of the mould and that of the highest point of the subsided concrete ismeasured. This difference in height in mm is taken as Slump of Concrete.
Purpose of slump test for concrete?
To check the consistency of the concrete; to determine if the concrete flow smoothly into the shape of the formwork. It is a quick check to see if the concrete is suitable for use.
What are required slump height of M20 for different concrete structure?
Required slump height of M20 for different concrete structures, are normally calculated by the required slump value, which would come out to be 100 lits.
What are advantages of slump?
The slump test is the most widely used device worldwide. In fact, the test is so well known that often the terms workability and slump are used interchangeably, even though they have different meanings. • Specifications are typically written in terms of slump. • The slump test is simple, rugged, and inexpensive to perform. Results are obtained immediately. • The results of the slump test can be converted to yield stress in fundamental units based on various analytical treatments and experimental studies of the slump test. • Compared to other commonly used concrete tests, such as for air content and compressive strength, the slump test provides acceptable precision.
Type of slump test?
Type of slump test are,True slumpShear slumpCollapse slump
What are true slump and shear slump in slump test?
A shear breaks off or crumbles. A slump stays together however it will slump down.
What is the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
What the importance of slump test in concrete work?
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
What is a concrete slump test?
The concrete slump test is used to measure an aspect of concrete. This test is used to measure the workable of concrete as well as its freshness and health.
Why is compacting factor test is better than slump test for concrete?
compaction factor test is better than slump test,because compaction factor test should have own compaction wight,so correct value will be find out from compaction factor test.........
How do you record a slump test result?
The slump test gives fairly good consistent results for a plastic-mix. This test is not sensitive for a stiff-mix. In case of dry-mix, no variation can be detected between mixesof different workability. In the case of rich mixes, the value is often satisfactory, their slump being sensitive to variations in workability.
What is the slump test normally used to evaluate?
the workability of a concrete mixture
When and where was slump test first used?
The slump test was first introduced in 1918 by an engineer named Frederick C. Davis at the University of Illinois. It was initially used in construction to measure the workability of fresh concrete.
What is the essence of slump test as used in civil engineering?
Slump test is the most commonly used method of measuring workability of concretewhich can be employed either in laboratory or at site of work.It is seen that the slump test gives fairly good consistent results for a plastic-mix. This test is not sensitive for a stiff-mix. In case of dry-mix, no variation can be detected between mixes of different workability. In the case of rich mixes, the value is often satisfactory, their slump being sensitive to variations in workability.
Why is the slump test suitable for site use?
The slump test is suitable for site use because it is a simple and quick way to measure the workability of concrete, making it convenient for on-site applications. It requires minimal equipment and can be easily performed by construction workers without specialized training. The results of the slump test provide valuable information about the consistency of the concrete, helping workers make real-time adjustments to achieve the desired quality of the concrete mix.
