Awarded as the best online publication by CIDC

In carrying out compression test for concrete, should test cubes or test cylinders be adopted?

Basically, the results of compression test carried out by using cubes are higher than that by cylinders. In compression test, the failure mode is in the form of tensile splitting induced by uniaxial compression.

However, since the concrete samples tend to expand laterally under compression, the friction developed at the concrete-machine interface generates forces which apparently increase the compressive strength of concrete. However, when the ratio of height to width of sample increases, the effect of shear on compressive strength becomes smaller. This explains why the results of compression test by cylinders are lower than that of cubes. Reference is made to Longman Scientific and Technical (1987).


This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

Share this post

Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

If you have a query, you can ask a question here.

3 comments on "In carrying out compression test for concrete, should test cubes or test cylinders be adopted?"

Femi ologbonyo says:

Sir, i realy appreciate the importance of this site. Pls, i want to know about the cube test to determine concrete strenght. Can you send me the complete procedure with a sample

ravikumar kunche says:

Sir, Pls send me the calculation of compressive strength of concrete core of dia 100mm , depth/length 125mm for 28 days

J.C.Sharma says:

Sir, I am very happy to study content of this site. Pls. tell me in detail acceptance criteria as new amendment in IS 456.Complete procedure of cube testing. Complete procedure to determine flexural strength of concrete
Pls. tell us heat of hydration of OPC.

Leave a Reply

Your email address will not be published. Required fields are marked *

Ask a question