Crushing Test on Building Stone

1.      Crushing Test:

Crushing test is conduct to determined the compression strength of stone. In this test stone is cut into cubes of dimension 40mm. Sides of cube are finely dressed and finished. Maximum

·         Number of specimen to be tested is three.

·         Such specimen should be placed in water for about 3 day prior to test and therefore tested in saturated condition.

·         Load bearing surface is then covered with plaster of Paris of about 5mm thick plywood.

·         Load is applied axially on the cube using Crushing Test Machine or Universal Testing Machine.

·         Rate of loading is 140 kg/sq.cm per minute. 

Crushing strength of the stone per unit area is the maximum load at which the sample crushes or fails divided by the area of the bearing face of the specimen.