Concrete Cylinder Compression Test (ASTM C39)

This video shows how the compression strength of concrete (f'c) is measured using a standard cylinder (per ASTM C39).
Thank you to my dad for creating the music.

[@adner1102]

thank you very much. I needed this for my university project

[@ovrissa5619]

Very useful. I just wished you had the lab apparatus detailed in the description box . And the procedures ( trying to do a lab report) . Ahah

[@truthbetold5155]

what concrete ratio did u use for the test?

[@skyrien]

Great musical selection!

[@abdurrahim3605]

Thanks a lot. Done.11-05-2022

[@mpspatel]

How does stress vary with 'h'..?

[@omarlouahadj8966]

the rupture of the test piece is not correct, if you plan (by rectification) the two loading faces, the test result is more reliable and the mode of rupture is correct.

[@user-id3hk3sj9x]

What is the difference if I'll using sulfer for caping cylinder ?!

[@fdggfgdfgd251]

so i just poured the 60th floor of a skyscraper.. and the 4th floor cylinders were tested and failed at 250 PSI... what do I do? add a zero to the number or should I let the consultants know?

[@GabbiBelleS]

I hope you let the consultants know! Wouldn't want a lawsuit!

[@margeloudinorog9338]

what water cement ratio did you use for the specimen?

[@CCSI322]

Impossible to tell. Trucks add water all the time

[@DectoJan-pe1gk]

Psi not ksi right?

[@jaraychumugsorn7720]

What is the purpose of h measurement?

[@CarbonTaxLOL]

Why does a larger sample diameter return lower results of compressive strength?

[@kintama3770]

pressure is more as less cross sectional area

[@heartobefelt]

What does the symbol Ac in the equation represent please ?

[@marwanhallak9341]

Cross area: which means the circle surfarce where the force is applied. Since it's a circle --> Ac= πD²/4

[@loveplucker]

I did 1000's of these,but just went by the machine #'s. No measuring, or cutting.

[@midnightson787]

what is the point of this video without talking....this isnt how the labs take place with banjos playing in the background

[@CCSI322]

But I bet you wish they did

[@calmegpascal4284]

yes it can do both, soothing focused music, or talking to the block to fail higher at a nice half hour glass shape

[@heartobefelt]

Sorry but these banjos were in fact made of concrete so they are compliant to the building code.