Slump test values

BS EN 12350-2:2009 Testing fresh concrete. Each batch and mix was evaluated to obtain the workability by slump test as shown in Fig. Materials Natural coarse aggregate and siliceous fine aggregate with maximum size of 3/8 in., supplied by Kistner Concrete Products, Inc. The procedures for performing slump tests will be explained later in this chapter. Slump test.

Slump test can be performed at the construction site as well as in the laboratory. To measure slump, either during the preparation of concrete trial batches or as a quality control check during construction, testers perform slump tests. The slump test is a means of assessing the consistency of fresh concrete. Stankovic et al (1999) present the results of the slump test at different cut-off values (angles at which pain occurred), showing that sensitivity of the slump test was poor (0.44, 95% CI:0.34 to 0.55), and specificity only slightly better (0.58, 95% CI:0.28 to 0.85) when using a strict cut-off (pain radiating below the knee). Yes, the slump test can be useful as an indication of consistency and, for certain mixtures, can also indicate workability. Is the slump test of value as a measure of consistency or workability?

In Civil Engineering (Concrete Structure), If on-site slump test fails, should engineers allow the contractor to continue the concreting works? 2. The slump test is a means of assessing the consistency of fresh concrete. It is used, indirectly, as a means of checking that the correct amount of water has been added to the mix. The slump test is sensitive to changes in the consistence of concrete, which correspond to slumps between 10 mm and 210 mm. You can also learn about the quantity of Cement, sand and aggregate used for Different grades of concrete. The slump test is the most common method for assessing the flow properties of fresh concrete; the slump provides a measure of workability . Collapse slump : I n this case, fresh concrete collapses completely.

What is Slump :-It can be defined as difference between height of the concrete before removing slump cone (mould) and height of the concrete after removing of slump cone as measured during concrete slump test.. Procedure to measure slump. Slump test of concrete is a measure ofits A. consistency B. compressive strength C. tensile strength D. impact value. This test is also known as the slump cone test.Slump test measures the consistency or workability of concrete. 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. BS EN 12350-2:2009 Testing fresh concrete. BS EN 12350-2 specifies a method for determining the consistence of fresh concrete by the slump test. Thus, concrete workability is a very crucial factor that must be considered in order to produce high quality concrete [2–4].

Q. The belief was that higher slumps indicated lower concrete strengths, and the test could thus be used to prohibit high-slump and allegedly low-strength concrete from … The slump values were recorded and interpreted for obtaining response of varying concrete to the workability and consistency of the mix.

The test is suitable only for concretes of medium or high workabilities (i.e having slump values of 25 mm to 125 mm).

As shown in table 15-4, the recommended values for slump vary for different types of construction. 3. Test 1 : Standard Slump and Flow Table Tests Objective To determine the reference slump value for Kistner concrete mix design and to calibrate it against an equivalent measure using a flow table. Slump test. Slump test. Concrete slump test is a simple and low-cost test which is prepared in the laboratory or at the construction site for the determination of workability and consistency.

BS EN 12350-2 specifies a method for determining the consistence of fresh concrete by the slump test. 16.4. Slump test.

(ASTM C-143/C-143 M-03) Scope & significance of slump test:. Mix is too wet or high workability mix , slump test isn’t appropriate for … The test is carried out in accordance with BS EN 12350-2, Testing fresh concrete. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard.


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