But now in the revision of IS 456 of 2000, the code has reverted back to slump value to denote the workability rather than compacting factor except for very low workability. It shows that the slump test has more practical utility than the other tests for workability.
The Slump test is the simplest test of workability for concrete, involves low cost, and provides immediate results. In IS:10262-1982, cl.3.3.4 & table-6 says +/- 3 percent adjustment is required in the quantity of water (calculated as per table-4 or 5), for each increase or decrease in the value of compacting factor (i.e. Desired slump = 50-75 mm. According to Indian Standard Code :456,2000 The Slump Value depends upon the placing condition (Type of Structure) and the values are given below: Recommended Result of Concrete Slump Test As per IS 456:2000 (Plain and Reinforced Concrete -Code of Practice), In IS:456-2000 the workability of concrete is given in mm (slump)in cl.7.1.

The test results of the sample shall be the average of the strength of three specimens. Flow test 4.

There are following three (3) type test procedures are defined in ( IS code – 1159: 1959 Methods of sampling and analysis of concrete.)

The concrete slump test is known as "Standard Test Method for Slump of Hydraulic-Cement Concrete" and carries the code (ASTM C 143) or (AASHTO T 119). No matter, Slump Test … Vee-Bee consistometer test. IS. So , it has achieved desired workability by satisfying the requirement of 50-75 mm slump value .

But now in the revision of IS 456 of 2000, the code has reverted back to slump value to denote the workability rather than compacting factor except for very low workability. In IS:10262-1982, cl.3.3.4 & table-6 says +/- 3 percent adjustment is required in the quantity of water (calculated as per table-4 or 5), for each increase or decrease in the value of compacting factor (i.e. 2.11 Water-Cement Ratio - The ratio of the weight of water including Strength tests for concrete have been covered separately in IS : 516-1959 Methods of Tests for Strength of Concrete. Slump test is used to determine the workability of fresh concrete. These standards specify methods, equipment for determining the consistency of fresh concrete by the slump test. MOULD 3.1 Shape and Dimensions - The mould for the test specimen shall be in the form ofthe frustum ofa cone as shown in Fig. It shows that the slump test has more practical utility than the other tests for workability. IS Code Method of Concrete Mix Design Procedure 1. Compaction Factor = 0.89. Metakaolin IMP Point As Per IS 456 • Metakaolin having fineness between 700 to 900 m2/kg may be used as pozzolanic material in concrete. Slump test as per IS: 1199 – 1959 is followed.The apparatus used for doing slump test are Slump cone and Tamping rod. Slump value for various type of construction: As per ACI: 211.1-19. slump value for various type of construction. APP.&\RATUS 2.1 'Fheapparatus shall consist of a mould for the test spccrrncn and a tamping rod. determining the slump of fresh concrete as ~l measure ofits consistency.

IS 456:2000 Code of practice for plain and reinforced concrete. Concrete Trial Mix 4: 1: Schematic Slump Cone Apparatus. The first two tests are laboratory tests while the third test is the field test. In IS:10262-1982, cl.3.3.4 & table-6 says +/- 3 percent adjustment is required in the quantity of water (calculated as per table-4 or 5), for each increase or decrease in the value of compacting factor (i.e. (As Per IS Code-456, P-13, Cl.
Now , we need to go for trial mix-4. Procedure to determine workability of fresh concrete by slump test. 2.10 Slump -A measure of consistency in which subsidence of a core of freshly mixed concrete is determined in accordarice with the method given in Appendix G of *IS : 456-1057. 6. IS 516:1959 Method of test for strength of concrete. IS 650:1991 Specification for standard sand for testing of cement Reference Standards IS : 1199 – 1959 – Method of sampling and analysis of concrete. Concrete Slump Test. IS 457:1957 Code of practice for general construction of plain and reinforced concrete for dams and other massive structures.

United Kingdom and mainland Europe Edit In the United Kingdom, the standards specify a slump cone height of 300 mm, a bottom diameter of 200 mm and a top diameter of 100 mm.


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