Rebound Hammer Test | Schmidt's Hammer | A Non Destructive Test on Concrete

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Rebound Hammer Test | Schmidt's Hammer | A Non Destructive Test on Concrete | Surface Hardness Test

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All About Structural Analysis and Design

Күн бұрын

A Non Destructive Test (NDT) is a way of testing a structural element without causing any destruction, there are two types of tests,
1) Destructive Test
2) Non Destructive Test
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Destructive Test is done before casting concrete or construction material onto the site, for example Compression Test of Concrete Cubes, i have explained in detail how to operate compression testing machine in my one of the videos, the link for that video is • Demonstration of Compr...
Non Destructive Test is a test performed on the structure without causing any harm to the structure. One of the primary method is Rebound Hammer Test.
Rebound hammer is a instrument which gives us the relative compressive strength of concrete based on the hardness of its exposed surface. It was invented by Swiss Engineer Ernst Schmidt, it is also known as Schmidt's Hammer or Swiss Hammer.
IS:13311 (Part 2)-1992, BS 6089-81 explains the standard rebound hammer test procedure.
Precautions to be followed while conducting Rebound Hammer Test:
1) The surface should be smooth, clean and dry.
2) Rough surface should be made smooth by grinding stone
3) The point of impact of hammer should be atleast 20mm away from the edge or sharp discontinuity
I am thankful to my colleague Miss. Swaroopa Aptekar for shooting this video and special thanks to my Institute KLS's Shri Vasantrao Potdar Polytechnic for allowing me to carry out Rebound Hammer Test
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#reboundhammertest #nondestructivetest #concretetesting #reboundhammer

Пікірлер: 140

@avisrivastava1080 4 жыл бұрын

The perfect video that i want to see about rebound hammer test Thanks a lot

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much for the compliment, we are happy this video helped you, keep supporting and sharing

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@tgazri2011 3 жыл бұрын

Finally someone who speak english, good explanation

@11221122gamer 4 жыл бұрын

dear, you have explained it way better than anyone, thank you :)

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much Zain, these kind of words motivates me to do more videos :)

@megabite2137 4 жыл бұрын

As usual, one of the best Demo . appreciate your time sir

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much for appreciating the video, stay tuned for more lab experiments

@mdruhulsk9643 2 жыл бұрын

First time i have seen the rebound hammer. Very good.

@structuralanalysisanddesign 2 жыл бұрын

Thank you, keep watching and sharing

@safdaralam7935 4 жыл бұрын

VERY INSTRUCTIVE AND CONSTRUCTIVE TO US.

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much Safdar

@sudiptaguria2062 3 жыл бұрын

It's an essential video for civil engineering students

@YadavChandan0 4 жыл бұрын

One of the best video on you tube thanks sir

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much Chandan Kumar, this motivates more to do videos, keep supporting us

@KhetkiRaj 4 жыл бұрын

Number of reading or test should be 16 in 1'*1' area (away from edge). And eliminate upper and lower 3 reading.

@SteelRCC 5 жыл бұрын

Well done Abhijeet

@structuralanalysisanddesign 5 жыл бұрын

Thank you so much sir

@bharathkumarbs275 3 жыл бұрын

More helpful to us this exp sir thank u so much sir

@structuralanalysisanddesign 3 жыл бұрын

Always welcome, all the best, keep supporting

@WorldEngineersOnline 2 жыл бұрын

One question - When you do rebound on the column you have the "plastered layer" which is surely less than the mass concret. So the rebound reading is not correct on the mass concrete. How you determine this real strength

@primeconcreteproducts7145 2 жыл бұрын

Man, This is very great.. Thanks alot Keep it up

@structuralanalysisanddesign 2 жыл бұрын

Thank you, Glad you like it! Keep watching and sharing

@prasadam 4 жыл бұрын

Good explanation sir...Tq

@structuralanalysisanddesign 4 жыл бұрын

You're most welcome, keep watching

@arpitapawar4562 4 жыл бұрын

Best demo sir 👌

@structuralanalysisanddesign 4 жыл бұрын

Thank you Arpita, keep supporting us

@abhiramsudhakaran2401 4 жыл бұрын

Simple and clear 👌

@structuralanalysisanddesign 4 жыл бұрын

Thanks Abhiram, stay tuned for more videos and check out my Patreon Profile

@johncadengineering9746 4 жыл бұрын

if u test horizontal,you can found directelly the result of vertical above and below

@shahbaazkhan4978 5 жыл бұрын

Sir vertically upward or downward kr liye Kya correction use karte hai please explain with example ?

@manokarthik2681 2 жыл бұрын

How to determine the achieved structural strength is adequate or not? which code practice we need to follow? As per the code practice what is the statement is there to compare the concrete is achieve the required strength or not?

@snktj_ 3 жыл бұрын

Well explained sir 🙏🏼

@structuralanalysisanddesign 3 жыл бұрын

Thanks for liking, keep watching and sharing

@civilsiteeducation6207 3 жыл бұрын

Good. keep it up.

@structuralanalysisanddesign 3 жыл бұрын

Thanks, will try my best

@camsect4619 2 жыл бұрын

Thanks for your video, and they can use the result of mean compressive strength from Schmidt to design the existing structure?

@vijenderkumar2494 4 жыл бұрын

Sir , dispersion reading on RHS ie 4.5 ,6 , 6.5 and so on for which purpose.

@ravijangra9717 4 жыл бұрын

Sir aisa hi video ek ultra Sonic Plus velocity pr b bna do plz

@structuralanalysisanddesign 4 жыл бұрын

Jaroor try karunga

@sushi0607 4 жыл бұрын

Nice explanation

@structuralanalysisanddesign 4 жыл бұрын

Thank you sushil

@sabriarahman9641 Жыл бұрын

Thank you

@amarpc3532 2 жыл бұрын

Sir if rebound hammer is new then also do mandatory on cube test

@rehansayyed8373 3 жыл бұрын

sir ji plz btaao hamari building 7th floor ki aur hum 1st par rehte h to kya 10 fit ka huge fish tank ba sakta hu ? jis ka total weight water stand glass ke sath kuch 4 ton tak ja rha h to kya yeh safe h ? koi risk to nahi pl z say

@amithinge3081 4 жыл бұрын

Sir thanx for such a good vedio

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much Amit, help us to reach more audience by sharing and supporting

@ashwinim.c8662 4 жыл бұрын

Super sir ......thanks

@structuralanalysisanddesign 4 жыл бұрын

Thank you so much for watching, we are happy this video was helpful for you, keep watching

@sushwinb5850 4 жыл бұрын

Informative.ifcallibiration is not proper.should it be sent to the manufacturer or we can do it.

@structuralanalysisanddesign 4 жыл бұрын

Thank you, Its better to send manufacturer and get calibrated

@mohanbabupm5778 2 жыл бұрын

Good explanation iam benifitted

@chintu9969 3 жыл бұрын

Excellent sir tq 👍

@structuralanalysisanddesign 3 жыл бұрын

So nice of you, all the best

@chintu9969 3 жыл бұрын

@@structuralanalysisanddesign tq sir

@aminedest9929 4 жыл бұрын

thank you !

@structuralanalysisanddesign 4 жыл бұрын

Welcome, stay tuned for more videos

@ethandkharofficial2804 4 жыл бұрын

Sir please upload videos on the operation of Ghat tracer .

@structuralanalysisanddesign 4 жыл бұрын

I will try to come up with Ghat Tracer

@shrinivasmudigoudar6570 3 жыл бұрын

Nice and Important Information+++++++++++++++++++++++++++++++++

@structuralanalysisanddesign 3 жыл бұрын

Thanks and welcome

@hathiramgugulothu1023 4 жыл бұрын

Very good explanation.

@structuralanalysisanddesign 4 жыл бұрын

Thank you for appreciating, watch out our more civil engineering videos

@adityakumarroyal7138 4 жыл бұрын

SIR IT SHALL NOT BE ON SAME POINT IT HAS DONE AT DIFFERENT POINT @20MM SPACING

@civilsiteeducation6207 3 жыл бұрын

Dear, It is only a practical demonstration to learn.

@kishoregowrish1373 5 жыл бұрын

Nicely shown

@structuralanalysisanddesign 5 жыл бұрын

Thank you, more practical videos will be coming up, stay tuned

@ulasalagangadhar765 3 жыл бұрын

Super sir ❤️❤️

@structuralanalysisanddesign 3 жыл бұрын

Thank you so much, keep watching and sharing

@basitriyaz914 3 жыл бұрын

Thanx a lot sir

@lalanthadilshan5487 3 жыл бұрын

Very good explain

@structuralanalysisanddesign 3 жыл бұрын

Thanks for liking, keep supporting and watching

@gokuls3536 4 жыл бұрын

What is the ideal range?? how we can interpret our building is strong or weak?

@civilsiteeducation6207 3 жыл бұрын

By testing of NDT and DT tests.

@dntknwwhy 3 жыл бұрын

Thank youu!! ❤️

@structuralanalysisanddesign 3 жыл бұрын

You're welcome 😊 keep supporting

@dntknwwhy 3 жыл бұрын

@@structuralanalysisanddesign can you also do how to get compressive strength using pulse velocity from ultrasonic pulse velocity test ?

@rajurongali96 4 жыл бұрын

Thanks boss 👍 nice explanation

@structuralanalysisanddesign 4 жыл бұрын

Always welcome

@e.sdesignsolution9098 5 жыл бұрын

Sir make a video on ultrasonic pulse velocity test

@structuralanalysisanddesign 5 жыл бұрын

ya i will try to make on it

@sumitkumarpaik4012 4 жыл бұрын

Can it be useful for testing the comparatively low strength lining ??

@danishhasan8380 3 жыл бұрын

what is the acceptance criteria

@civil-tech539 3 жыл бұрын

Sir i need calibration work sheet of rebound hammer...can u help me?

@abdidahirhassan2710 3 жыл бұрын

Thnks Sir

@structuralanalysisanddesign 3 жыл бұрын

Welcome, all the best

@poshandas8112 3 жыл бұрын

Thank you so much sir..🙏🏻

@d7aconic 4 жыл бұрын

I've got a manual for this test and it says not to calibrate using curves on the hammer.It says to use the central calibration chart.Why so?

@subashgovin6114 4 жыл бұрын

Thanks you sir

@structuralanalysisanddesign 4 жыл бұрын

Welcome Subash, stay tuned for more videos

@subashgovin6114 4 жыл бұрын

@@structuralanalysisanddesign surely sir

@scientificnature 2 жыл бұрын

How can it be calibrated ?

@sightseeingtours7820 3 жыл бұрын

Bro, I need ASTM 805 rebound number chart

@faisalsaeed3634 4 жыл бұрын

Boss ye app ne horizontal test kia? To graph kese select krenge K teeno me se konsa consider krna hai

@structuralanalysisanddesign 4 жыл бұрын

Aap dhyan se dekhiye video mai maine kaha hai kaun si line dekhni hai graph mai, graph mai indication hai horizontal and vertical

@ConstructionTechandVlogging 4 жыл бұрын

Aree boss tum aatcha dekha nahi Hain Kya? Graph me konsa Lena Hain aatcha bola Hain video me.

@jegadeesana1904 4 жыл бұрын

Nice

@structuralanalysisanddesign 4 жыл бұрын

Thanks

@shubhamumbarani6996 4 жыл бұрын

Thanks to this video sir

@structuralanalysisanddesign 4 жыл бұрын

We are glad this video has helped you, stay tuned for more videos

@rejaulansary9166 5 жыл бұрын

Thank You.... Sir

@structuralanalysisanddesign 5 жыл бұрын

We are glad that this video was useful to you, stay tuned for more videos

@sadhanatalluripragatiengin1271 3 жыл бұрын

Super

@dr.v.rajendranvelayutham540 4 жыл бұрын

Hi, Predicting compressive strength using rebound Hammer is right method? Or we can use only for the surface hardness.

@structuralanalysisanddesign 4 жыл бұрын

Core cutter test will best to determine compressive strength

@sharadabikkannawar9087 4 жыл бұрын

I love u... Sir... I need guidance to excel... A site engineer and open my own firm...

@structuralanalysisanddesign 4 жыл бұрын

Thank you for your love, keep hardworking and you will achieve success

@NaveedKhan-wc4zd 4 жыл бұрын

What is the cost of this hammer ?

@PankajSingh-me4th Жыл бұрын

Liked it

@sachinmeshram9710 4 жыл бұрын

How much price rebound hammer

@structuralanalysisanddesign 4 жыл бұрын

just contact with vendor, price varies with company, google for more information

@unknownfacts-tamil2226 4 жыл бұрын

Nice video bro

@structuralanalysisanddesign 4 жыл бұрын

Thank you, keep supporting

@rahulpatil-hx1pu 4 жыл бұрын

Is it necessary to take the 6 readings on the same point .can we take the 6 readings on different 6 Points

@structuralanalysisanddesign 4 жыл бұрын

Its to be taken at 6 different points

@rahulpatil-hx1pu 4 жыл бұрын

Thanks for Guidence

@shubhamumbarani6996 4 жыл бұрын

Q. how we calibrate if the rebound hammer is not showing correct result ?

@structuralanalysisanddesign 4 жыл бұрын

If you want to check whether rebound is giving correct answer or no just do rebound hammer test on on a standard concrete block and note down the value and than same cube you test in compression testing machine and compare the values, if you getting different value with rebound hammer just consult the technician who is allowed to check the rebound hammer Here is a link how to operate digital compression testing machine kzfaq.info/get/bejne/h7hnp9eemtrWZKM.html

@shubhamumbarani6996 4 жыл бұрын

if there is nigligible difference between both result then what should we do ? Do we requried to calibrate it or not ?

@shubhamumbarani6996 4 жыл бұрын

Can we calibrate an instrument without a technician??

@structuralanalysisanddesign 4 жыл бұрын

If it is negligible no need to calibrate, if the results vary too much than calibration is needed, 10% variation can be accepted

@structuralanalysisanddesign 4 жыл бұрын

No, it is strictly advised to calibrate the instrument with the certified technician only

@toufikachour4687 2 жыл бұрын

the value equivalent to 26 is 21, not 18

@tanweerabbas6628 4 жыл бұрын

I want the info of the graph

@structuralanalysisanddesign 4 жыл бұрын

Graph already shown in video Tanweer

@tanweerabbas6628 4 жыл бұрын

@@structuralanalysisanddesign nh graphical prove how this graph done

@mav5204 2 жыл бұрын

26 is poor concrete probably due to plaster giving false reading

@kaveenmadushkaisuru2832 3 жыл бұрын

its not calibrated

@randhawa2524 4 жыл бұрын

Hlo sir

@shahbaazkhan4978 5 жыл бұрын

Sir vertically upward or downward kr liye Kya correction use karte hai please explain with example ?

@structuralanalysisanddesign 5 жыл бұрын

The chart which will be there on rebound hammer is having 3 curves, it is explained in detail in video please go through video completely