1. Oven dry aggregate passing 12.5mm IS sieve and retained on 10mm IS sieve are selected for the test. 2. The cylindrical measure is filled by the sample aggregates in three layers approximately equal depth and each layer being tamped 25 times by the rounded end of the tamping rod. 3. After tamping the third layer, the top surface is leveled using the tamping rod as straight edge. The test sample thus takes weight as W1 gms. 4. The cup of the test apparatus is placed in position on the base plate, the test sample is transferred into the cylinder in single layer being tamped 25 times and the surface of the aggregate is leveled. 5. The hammer is raised until its lower face is 38mm above the upper surface of the aggregate in the cup, and allowed to fall freely on aggregates for 15 times at an interval of one second. 6. The crushed aggregate is then removed from the cup and the whole of it is sieve on the 2.36mm IS sieve until no further significant amount passes. The fraction passing the sieve is weighed accurate to 0.1gm. and noted as W2 gm.
Sir your video is very good. I learn aggregate crushing , impact value. But i cant find the loss angles abrasion value of coarse aggregate. Plzz suggest
1. Oven dry aggregate passing 12.5mm IS sieve and retained on 10mm IS sieve are selected
for the test.
2. The cylindrical measure is filled by the sample aggregates in three layers approximately
equal depth and each layer being tamped 25 times by the rounded end of the tamping rod.
3. After tamping the third layer, the top surface is leveled using the tamping rod as straight
edge. The test sample thus takes weight as W1 gms.
4. The cup of the test apparatus is placed in position on the base plate, the test sample is
transferred into the cylinder in single layer being tamped 25 times and the surface of the
aggregate is leveled.
5. The hammer is raised until its lower face is 38mm above the upper surface of the
aggregate in the cup, and allowed to fall freely on aggregates for 15 times at an interval of
one second.
6. The crushed aggregate is then removed from the cup and the whole of it is sieve on the
2.36mm IS sieve until no further significant amount passes. The fraction passing the sieve
is weighed accurate to 0.1gm. and noted as W2 gm.
very informative video i appreciate it love from pakistan
Love you sir, your video is very helpful sir.
Thank you sir such a nice explanation
Very well explained thumbs up brother
Sir your video is very good.
I learn aggregate crushing , impact value.
But i cant find the loss angles abrasion value of coarse aggregate. Plzz suggest
Sumit raj s nice videos sir
Apparatus
1. Weighting Machine
2. Pan
3. Tamping Rod of 10 mm
4. Calibrating Cylinder
5. Impact Mould
6. Sieve of 12 mm
7. Sieve of 10 mm
Thank you sir explained very nicely
This video is really helpfull....
Sir so good explanation upload more videos on ce lab
Sir thanks aggregate impact value
And aggregate crushed value which one the pest practical for road traffic impact
nyc vedio sir....thank you
Best quality video sir.
Thank you
Jazakallah
Thank you sir...
Bahuth zbrdsth
Thank u sir
What is the relationship between impact value and toughness I mean what will happen to aggregate if impact value is high or low???
If impact value is high ....it show the weak toughness for pavement surface....it can't use in construction work!!!
thank you sir
Shandar
Good sir
Nice
Sir,please off the fan for more accurate weight reading
Very nice sir
Because
You take the sample from practical field
Sir it is good but you don't mention the dimensions and hight of the 15 blow's is not mentioned hight don't rept the sir
spr
Upload los angel test
Why we take 10mm only
Because 10mm is better to use in pavement surface
It's good
Kuldip DODIYA th-cam.com/video/HnmyMttXgmk/w-d-xo.html
Sir adhi 10mm kadu
10CM
Which is code???
BS812 part 112
Tell me the is codes
BS812 part 112
we are giving 15 blows why should we give only 15 blows why should not give 20 blows
bangla hole valo hoto
Nice
Nice
Nice