Aggregate Impact Test | Aggregate Impact Value | Impact Test on Aggregates by Impact Testing Machine
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- เผยแพร่เมื่อ 10 ม.ค. 2020
- Detailed Impact Test on Road Aggregates with calculation of Impact value has been shown, also range of aggregate impact value is explained.
Toughness is the property of a material to easiest impact. Due to moving loads the aggregates are subjected to pounding action or impact and there is possibility of stones breaking into smaller pieces. Therefore a test designed to evaluate the toughness of stones i.e., the resistance of the stones to fracture under repeated impacts may be called Impact test on aggregates. The test can also be carried on cylindrical stone specimen known as Page Impact test. The aggregate Impact test has been standardized by Indian Standard Institution. The aggregate impact test is conducted as per IS-2386 Part IV. The aggregate Impact value indicates a relative measure of the resistance of aggregate to a sudden shock or an Impact, which in some aggregates differs from its resistance to a slope compressive load in crushing test. A modified Impact test is also often carried out in the case of soft aggregates to find the wet Impact value after soaking the test sample.
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Aggregate Impact Value Range:
1) Less than 10%---- Exceptionally Strong
2) 10-20%---Strong
3) 20-30%---Satisfactory for road surfacing
4) More than 35%-----Weak for road surfacing
APPARATUS:
1) Impact testing machine.
2) Cylindrical measure.
3) Tamping Rod.
4) IS Sieve.
5) Weighing Scale.
6) Oven.
PROCEDURE:
1) The sample consists of aggregates passing 12.5mm sieve and retained on 10mm seive and dried in an oven 4 hrs at a temperature 1000c to 1100C and cooled.
2) The aggregates are filled in the cylindrical measure in 3 layers and tamped 25 times with rounded end of the tamping rod and the surplus aggregates are struck off using the tamping rod as straight edge
3) The whole of the test sample from the cylinder measure is transferred to the cup and compacted by tamping with 25 strokes and the net weight is determined.
4) The test sample is subjected to a total of 15 blows, each being delivered at an interval of not less than 1 sec and hammer is made to fall at a height of 38 cms.
5) The crushed aggregate is removed and it is sieved on 2.36mm sieve and fraction passing the sieve is weighed.
I thank my students Mohammed Sameer, Manjunath Pujari, Guruprasad Gondi and Siddhaya Bhavimani for their assistance.
Big thanks to my Institution KLS Shri Vasantrao Potdar Polytechnic for permitting to carry out this experiment
#ImpactTestonAggregates #ImpactTest #TestsOnAggregates
Professor thank you very much for your simple explanation. It's part of my Masters Degree Project. Greetings from Nigeria.🙏🏾
You are very welcome, i wish you all the best for your Masters, happy new year
that guy rodded 32 times ..
Thank you very much sir we are very much interested to your classes ,its very easy to us to understand ,u explained very properly and clearly sir thank you sir
I am very happy that you are interested to listen to my lectures, channel aim is to provide lectures in easy and understandable manner. Keep watching as I will be coming up with videos on steel structures. Thanks for watching, keep supporting and sharing
Thanks you Sir
From India Banglore
Really amazing explanation sir....I feel very happy after knowing the full details
So nice of you, I am happy this video is useful to you, keep watching and keep sharing, all the best
Waaoh
What an explanation
Really amazing sir
Keep going...
Thank you so much Anil, I am glad this video helped you in learning the test, keep watching and sharing, all the best
Tq for this video sir u give the information about testing machine
i hope it was useful for you
Thank you very much sir
So nice of you, all the very best
Sir bahut acche se apne samjhaya h . Supper 👌👌👌
Thank you, keep supporting
Very easy to understand thx so much sir 🙏🙏🙏
Super sir
Thank you, all the best
Very good explanation
Thanks for liking, keep watching and sharing
Bohat hi sundar
Thank you very much 🙏
You're most welcome, all the best, keep watching
Amazing explanation sir💖💖
Thank you so much, keep supporting
Very nice 🙏🙏🙏 video sir
which standard was use as reference for the procedure?
Thank you sir👍
Most welcome, all the best, keep watching and sharing
Best video 📷
Thank you so much, keep watching and sharing
Sir cam you please post viva questions about this experiments and conclusions
Very nice
wow. thank u so much sir
:)
Thanks Sir itna clear college me bhi nhi samajh ata..
Welcome, keep watching and keep sharing
What ll be sieve no. If 20 mm agg is being tested
Tq sir nice explanation
You're most welcome, keep watching and sharing
Thanks
Nice sir 👌👏
Thank you, all the best
thanks
You're welcome!
Thank u so much sir
Most welcome, all the best, keep watching
Did not oven dry the sample for 4 hours at 110°c before using it
Danyang- kunshan grand bridge
Useful
Thank you sir🙂
Most welcome, all the best
Thankyou sir
Thankes sir
Welcome, keep watching and supporting
Danyang-Kunshan Grand Bridge
wow nice machine
Yes mitra :)
Danyang-Kunshan Grand Bridge
Is for 20 mm aggregate ?
Sir aggregate sample kg how much?...
Tqsm sir
Welcome, all the best, keep watching
Tq bro 👍
What happens when concrete free fall is above 1.5mts sir
Segregation happens
The blows given in that little cup is not needed coz it is inreasonable no use of it,, Also you are creating more weight parameters until W4,, i do not know why you did not weigh the cup to zero first.
🤩👍
Thank you for watching, keep supporting us
specificaion
1.5 m
ya
Tamping rod is wrong..
Plz in urdu
14 blows onnly😂
Hindi bolne mai sharam ati hai
My target audience is worldwide so channel is in English language
Sourabh Dubey are you nonsense
This is way of talking to our respected teacher
Know your culture and don't show arrogent if you aren't interested in English please don't watch video
But don't insults rather than appreciation , dude, sir is giving valuable knowledge free of cost and you are rudely giving comments
thank you so muchh sir
Thank you Sir
Most welcome
Thank u sir
Welcome, all the best, keep watching and sharing
Thanks sir 👍
Most welcome, all the best