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.
The geomorphic landform that identifies a slump is called a scarp or slump scar. This feature is created when a mass of rock or soil moves downhill along a curved sliding surface, resulting in a distinct steep slope at the head of the slump.
Slump and flow are both measures of concrete consistency, but they are determined using different tests. Slump measures the vertical consistency of concrete, while flow measures the horizontal or spreadability of concrete. Generally, higher slump values indicate a more workable concrete mixture, while flow values are used to assess self-compacting concrete.
Mass movement
It would typically be classified as a slump if the rock falls suddenly in a mass movement due to the force of gravity and weak underlying materials. Creep, on the other hand, involves a slow and gradual movement of soil or rock downslope over time.
mass movement
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.
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.
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 are,True slumpShear slumpCollapse slump
the workability of a concrete mixture
A shear breaks off or crumbles. A slump stays together however it will slump down.
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.
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
The importance of slump test in concrete work is to ensure consistency in the concrete. The test measures the workability of the concrete.
Slump test is the most commonly used method of measuring workability of concrete.It does not measure all factors contributing to workability, nor is it always representative of the placability of the concrete.However, it is used conveniently as a control test and gives an indication of the uniformity of concrete from batch to batch.
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.
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.........