The slump cone test apparatus having dimension as (ID-100mm at top ID- 200mm at bottom & length 300mm) is filled with freshly mixed concrete and is tamped with a tamping bar in four layers.
Standard
IS:7320
Model
VSLIC-C201
Origin
Indian
Make/ OEM
VERTEX
Warranty
This Warranty covers the defects resulting from defective parts, materials or manufacturing, if such defects are revealed during the period of 12 months since the date of purchase.
Picture
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The top of the concrete is levelled off with the top of the slump cone, the cone is lifted vertically up and the slump of the sample is immediately measured.
Slump Test Apparatus is with testing rod base plate. It is used for the determination of the consistency of freshly mixed concrete, where the maximum size of the aggregate does not exceed 38 mm.
The apparatus consists of one slump cone with handles and foot pieces.
The slump cone has an internal dimension 200 mm dia at base 100 mm top dia and 300 mm height foot pieces can be fixed to the clamps on the base plate.
The base plate has a lifting handle for easy transportation.
One graduated steel rod 16 mm Dia x 600 mm long rounded at both ends and graduated in mm is also supplied.
Foot pieces can be fixed to the clamps on the base plate.
FEATURES
The top of the concrete is levelled off with the top of the slump cone, the cone is lifted vertically up and the slump of the sample is immediately measured.
Slump Test Apparatus is with testing rod base plate. It is used for the determination of the consistency of freshly mixed concrete, where the maximum size of the aggregate does not exceed 38 mm.
The apparatus consists of one slump cone with handles and foot pieces.
The slump cone has an internal dimension 200 mm dia at base 100 mm top dia and 300 mm height foot pieces can be fixed to the clamps on the base plate.
The base plate has a lifting handle for easy transportation.
One graduated steel rod 16 mm Dia x 600 mm long rounded at both ends and graduated in mm is also supplied.
PRODUCT VIDEO
WORKING PRINCIPALNew
Slump Test of Concrete as per IS Code 1199-1959 | Procedure, Lab Report, Apparatus List
What is the Slump Test of Concrete?
Slump test of concrete is the test of measuring workability of concrete which is extensively used in construction site-work all over the world.
Slump test of concrete is an on-the-spot test to determine, indirectly, the correct W/C ratio needed for concrete to be used for different works. Fresh unsupported concrete will flow to the all sides and the vertical sinking of concrete is known as the slump. A concrete is said to be workable if it can be easily placed compacted and easily mixed and easily finished.
What is Slump Cone?
The slump cone is a hollow frustum made from thin steel sheet with internal dimensions as its top diameter is 10cm, the bottom diameter is 20 cm, and height is 30 cm in the test slump cone stands on a plane non-porous surface. To facilitate vertical lifting from molded concrete it is provided with a suitable guide attachment and suitable foot places and suitable handles. The tamping rod is of 16mm diameter and 60cm long and it is bullet pointed at the lower end.
IS Code for Slump Test of Concrete:-
IS: 456-2000; Code for plain and reinforced concrete
IS: 1199-1959; Code for methods of sampling and analysis of concrete
Apparatus Required For Slump Test of Concrete:-
Iron Pan for mixing concrete
Weighing balance
Trowel
Wire brush
Slump Cone
Steel scale
Tamping rod
Mixing tray
Internal Dimension of Slump Cone:-
Details
Dimensions in cm
Tolerance in mm
Bottom diameter
20
+3, -1∙5
Top diameter
10
+3, -1∙5
Height
30
±1∙5
Specification about Slump Cone:-
The slump cone should not be constructed of metal (Don’t use the slump cone made by brass or aluminum) of at least 1∙6mm (or 16BG) thickness. The top and bottom shall be open at right angle to the axis of the cone. The slump cone should have a smooth internal surface. It shall have suitable foot pieces and also handles to facilitate lifting it from the moulded concrete test specimen in a vertical direction as required by the test. Dimension of the slump cone should not differ by more than the specified tolerance. A typical slump cone is shown in the figure.
Procedure for Slump Test of Concrete:-
Preparation of Specimens:- Mixtures are prepared with W/C ratio 0.4, 0.5, 0.55 and 0.6. For each mixtures, take Cement = 2.5 kg, C.A. = 10 kg and F.A. = 5 kg.
Mix the dry constituents thoroughly to get a uniform colour then add water in the mixture.
The internal surface of the mould is to be completely cleaned and placed on a smooth, horizontal and non-absorbent surface.
Place the mixed concrete in the completely cleaned slump cone in 4 layers. Each is approximately 1/4 in height of the mould.
Tamp each layer 25 times with tamping rod using the tampering rod or a trowel strike of the excess concrete above the concrete slump cone.
Measure the vertical height of cone (h1).
Immediately after this, slowly and carefully remove the slump cone in the vertical direction.
As soon as the slump cone is removed the concrete settles in vertical direction.
Place the steel scale above top of the settled concrete in horizontal position and measure the height of slump cone (h2).
Complete the experiment in two minutes after sampling.
The difference of two heights (h1-h2) gives the value of slump.
Observations:-
1) Type of cement = ……………….
2) Brand of cement = ………………
3) Density of concrete= …………… kg/Liter
Observation Table:-
Trail No.
Proportion
Slump in mm
Types of Slump
W/C
W
liter
C
kg
FA kg
CA kg
1
2
3
4
Reporting of Result:-
The slump of concrete = …………….mm
Specifications:-
The degree of workability of concrete as per IS: 456-2000 is classified as follows:
Degree of workability
Value of slump
Very low
0mm to 25mm
Low
25mm to 50mm
Medium
50 mm to 100 mm
High
100 mm to 175 mm
Relation between workability, compaction factor and slump:-
Workability
Compaction Factor
Slump (mm)
Very Low
0.78
0-25
Low
0.85
25-50
Medium
0.92
50-100
High
0.95
100-175
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