The simple and best way you taught . Crystal clear. Thankyou

Nice explanation brother. thanks for sharing.

Very nice video sir , bahut badiya samjhaya ...

wow sir i am happy to learn it after a long time. thank you very much sir.

perfect, so helpful

Awesome video!!

nice sir keep continues

Good work

shandaar

Nice mohan sir nd Venkat sir

Great initiative

Nicely shown,

👍👍👍

Good!

when do you apply the dispersion value?

Sir Super but ple explain the non destructive test in concrete because I will take the seminor sir

Good explanation

Nice...

Nice video sir

good

nice video sir

grt

Thank you sir .

This graph is the fabrication graph obtained in high class concretes and does not give real results in the job siteield. Instead, you should calibrate with the cube according to DIN 1045 and find the rebound value of the mpa according to the formula x and y from the trend line curve.

If you were to read EN 12504-2, you would find out that you need to do a minimum of 9 readings in a 300 mm by 300 mm square area. One would determine the rebound number R by the average of the readings. Outliers are tossed if more than +6 or -6 of R. Then reaverage. If more than 20% of the readings are outside, then the test to be redone. Also, a point is discarded if it crushed or broke through a near surface void. I also point out to read Notes 1 and 2 of the Scope whereby the Rebound hammer is to confirm the uniformity of the concrete and can only provide an estimate of strength. Do not believe the manufacturer's curves - site specific ones, as others have noted, need to be developed.

Thanks sir

Please suggest best company for purchase rebound hammer

Thanks for the information Mohan. Is 34 N/mm^2 a good strength? What is the acceptable range?

Make video on ultra sonic pulse velocity test

So is a steel coloumn and a concrete coloumn the same..?

34 is that the compressive strength in axial loading or horizontal force

Nice

Thank so much

is it will be correct

Good

sir the load used by u is fixed...its the load that need plunger to spring back ...is it the hardness value?? what about the impact made by plunger on concrete column.??

can we conclude the result with one reading only?

👍👍👍Ty

labe total testing methard and formola ke shath hind me bheje

Sir can I get the graph

Sir...Is that test applicable for old concrete or repair work...???

Price

What is the minimum strength required for column sir

सर हमने जमिन के निचे के जो कालम है ऊसुर तिन दिन पाणी डाला और गड्डे मिट्टी से भर दिये कालम निचे पाच फिटहै ऊस पर बिसदिन और पाणी डाला लेकीन पाणी कम डाला तो पाणीसे गड्डे मे मिट्टी तिन फिट गिल्ली हूई और निचे कालम का रहा दोफिट हिस्सा गिल्ला नही हूआ तो क्या पांचमेसे तिन फिट गिल्ला हूआ और निचे का दोफिट हिस्सा गिल्ला नही हूआ तो क्या आपका को क्या लगता है कितना मजबूत होगा कालम हमे यह बात बिस दिन बाद पता चली तब हमने और पाणी डालके उसे क्योरींग कि थी आपका तजूरबा है क्या कहता है आपको क्या लगताहै

Ye masin mereco chahiye

1 point pe ham strength decide kar sakte hain kya ?? Sir tell me how to calculate strenght Manually?? What is error in that method??

I AM NOT CONVINCED

hind me vedeo banay

This does not make any logical sense to me. If I would press the hammer against a steel coloumn. It would show the same reading.

My website ismailfkk help sir

Chabaas