the ppt gives complete information regarding the test used to carry out to study the various properties of stone and further use it for construction.

1. TEST FOR
STONES

2. PURPOSE AND
THE NECESSITY
FOR THE TEST OF
STONES.

3. FOLLOWING ARE DIFFERENT TEST FOR STONES…..

4. ACID TEST
IT IS A NATURAL TEST AND CANNOT BE APPLIED ON
LIMESTONE.
IT IS MAINLY CARRIED OUT ON SANDSTONE Good stone
Sharp edges
Powder free
surface
Poor stone
Blunt edges
Powdered
surface
Stone
placed in
hydro-
chloric acid
1%

5. ATTRITION TEST
Initial weight
DEVAL’S attrition test machine

6. CRUSHING TEST….
Three specimen placed in water for 72
hrs prior to test
Covered with plaster
of paris
5mm thick wood

7. COMPRESSIVE STRENGTH OF A STONE IS FOUND OUT
WITH THE HELP OF THIS TEST………

8. CRYSTALLISATION TEST
IT IS TO BE NOTED THAT THE CRYSTALLISATION OF CALCIUM
SULPHATE IN PORES OF STONES CAUSES THE DECAY OF STONES
CAUSES THE DECAY OF STONES DUE TO WEATHERING. BUT AS
SALCIUM SULPHATE HAS LOW SOLUBILITY IN WATER , IT IS NOT
ADOPTED FOR THIS TEST.
4 cubes of stone immersed in 14% of
sodium suplhate solution for 2 hrs

9. FREEZING AND THAWING TEST

10. HARDNESS TEST
3 Dorry’s test machine

11. IMPACT TEST.
Lifting handle
Hammer of weight
132- 137N
Vertical guide bar
Cup 102mm
dia and height
50mm
Circular base

12. MICROSCOPIC TEST

13. Smith test
Stones free from souble and
earthy mineral matters.
Stones containing souble and
earthy mineral matters.

14. Water absorption test for stones..
• Water absorption test is carried out to calculate the %age water absorbed by stones.
• Procedure: For this test, the stone is samples are taken and dried in an oven at 100° C to
to 110° C for 24 hours. The sample is then weighed and the weight is recorded as W1.
• Now the sample is immersed in distilled water at room temperature (20°c to 30°c) for a
24hours.
• Samples are taken out of the water and surface water is wiped off with a damp cloth and
Let the weight at this stage is W2.
• Then, the percentage of water absorption by weight of a given stone specimen is given
relationship:-
• Absorption value in percentage = W2−W1/W1 × 100
Then, the percentage of water absorption by weight of a given stone specimen is given by the following relationship:-
Absorption value in percentage = W2−W1/W1 × 100
Then, the percentage of water absorption by weight of a given stone specimen is given by the following relationship:-
Absorption value in percentage = W2−W1/W1 × 100