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
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
Love you sir, your video is very helpful sir.
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
Best quality video sir.
Bahuth zbrdsth
Thank u sir
Very well explained thumbs up brother
Thank you sir such a nice explanation
This video is really helpfull....
Thank you sir explained very nicely
nyc vedio sir....thank you
Thank you
Because
You take the sample from practical field
Very nice sir
Good sir
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
Nice
Shandar
spr
Thank you sir...
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
It's good
Kuldip DODIYA ruclips.net/video/HnmyMttXgmk/видео.html
Jazakallah
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!!!
Sir,please off the fan for more accurate weight reading
Upload los angel test
we are giving 15 blows why should we give only 15 blows why should not give 20 blows
Sir adhi 10mm kadu
10CM
Why we take 10mm only
Because 10mm is better to use in pavement surface
Tell me the is codes
BS812 part 112
Which is code???
BS812 part 112
bangla hole valo hoto
Nice
thank you sir
Nice
Nice