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Transverse Strength Test of Stones | Crushing Test of Stones | Stones | Construction Materials | By Ashutosh Nautiyal and Akhand Dutta

Transverse Strength Test (IS: 1121 (Part II) Test pieces should be blocks of the size of 200 mm * 50 mm * 5 mm. A suitable form of apparatus is required to perform the tensile strength test on stones.

Transverse Strength Test of Stones (IS: 1121 (Part II)



Transverse Strength Test | Crushing Test of Stones | Stones | Construction Materials | By Akhand Dutta
Stones



Requirements:-



  • Test pieces should be blocks of the size of 200 mm * 50 mm * 5 mm.


  • A suitable form of apparatus is required to perform the tensile strength test on stones.


Procedure:-


  • These test pieces are used to determine the transverse strength of the stone in each saturated(immersed in water at 20 to 30°C for 3 days) and dry condition(dried in an oven at 105±5°C for 24 hours and cooled in a desiccator to 20 to 30°C). 


  • Each specimen piece is supported upon two self-aligning bearers A and B(40 mm in diameter each) and the distance between centres of bearers being 150 mm.



  • Bearer A is supported horizontally on two bearer screws C, which carry hardened steel balls D.



  • Bearer B is supported on one such screw and ball.




Crushing Test On Stones | Stone As A Building Material | Stones | By Ashutosh Nautiyal
Image From Book By S.K. Duggal




  • The load is then applied centrally on the specimen piece at a uniform rate of 2 kN/min through a bearer E(40 m in diameter) placed midway between the supports upon the upper surface of the specimen S and parallel to the supports.



  • The Transverse Strength(R) of the specimen is given by:-





Crushing Test On Stones | Stone As A Building Material | Stones | By Ashutosh Nautiyal
Transverse Strength



           where R=Transverse Strength in N/mm2
       
           W= Central breaking load in N
       
           L=Length Of Span in mm
       
           b= Average Width in mm of the test piece at the midsection
       
           d=Average Depth in mm of the test piece at the midsection
                 
           

  • The average of three results(separately for saturated and dry condition) should be taken to determine the transverse strength of the stone. 



Precaution:-



  • If any test piece is giving result as much as 15% below the average value, it should be examined for defects.














*Self Typed
*Source- Internet, Books, Self-Analysis


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About the Author

Mr Akhand Dutta is the Founder and Owner of Civil Engineering With Akhand Dutta (CEWA) and Akhand Dutta Writes. Currently, a civil engineering student at Bipin Tripathi Kumaon Institute of Technology, Dwarahat, Almora, Uttarakhand and has done his …

1 comment

  1. please help the calculation mail id maheshjob1993@gmail.com
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