How to perform compression test on UTM ?
Experiment No. – 01
COMPRESSION TEST
APPARATUS:-
1. UTM or A compression testing m/c,
2. Cylindrical or cube shaped specimen,
3. Vernier caliper,4. Liner scale.
DIAGRAM:
THEORY:-
Bricks are used in construction of either load bearing walls or in portion walls in case of
frame structure. In bad bearing walls total weight from slab and upper floor comes directly
through brick and then it is transversed to the foundation.
In case the bricks are loaded with
compressive nature of force on other hand in case of frame structure bricks are used only for
construction of portion walls, layers comes directly on the lower layers or wall. In this case
bricks are loaded with compressive nature of force. Hence for safely measures before using
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the bricks in actual practice they have to be tested in laboratory for their compressive
strength.
PROCEDURE: -
1. Select some brick with uniform shape and size.
2. Measure it‟s all dimensions. (LxBxH)
3. Now fill the frog of the brick with fine sand.
4. Place the brick on the lower platform of compression testing machine and lower the
spindle till the upper motion of ram is offered by a specimen the oil pressure start
increasing the pointerstart returning to zero leavingthe drug pointer that is
maximum reading which can be noted down.
CALCULATION:-
Max. Load at failure
Compressive Strength = ----------------------------- KPa
Loaded Area of brick
RESULT:-
The average compressive strength of new brick sample is found to be ………. KPa \
PRECAUTIONS:-
1) Measure the dimensions of Brick accurately.
2) Specimen should be placed as for as possible in the of lower plate.
3) The range of the gauge fitted on the machine should not be more than double the
breaking load of specimen for reliable results
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