Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion
Discussion Forum : Soil Mechanics and Foundation Engineering - Section 1 (Q.No. 1)
1.
In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is
Discussion:
123 comments Page 8 of 13.
Sasi said:
8 years ago
Why we say liquid limit at 25 blows? What is the reason?
Naresh said:
8 years ago
I think aprox 65 is correct.
Hatem Alhamaidi said:
8 years ago
Answer is:
LL = 61.7 % by interpolation.
LL = 61.7 % by interpolation.
Hemant maher said:
8 years ago
W1=10, W2=20, N1=70, N2=100.
So,
I = (w2-w1)/log(n2/n1).
I = 64.51= 65%.
So,
I = (w2-w1)/log(n2/n1).
I = 64.51= 65%.
Tomin Nyodu said:
8 years ago
@Hemant Mahar.
Method 1
I = (w1-w2) /log(n2/n1)
I= (70-20)/log(100/10)
I= 50
Hence, the ans is option (b)
Method 2
W1=70(10/25)^0.121=62.65
W2=20(100/25)^0.121=23.65
W1-W2=38.99 (Wrong)
Why? This is an empherical Formula and the value of the exponent is between 0.068 to 1.210.
Method 1
I = (w1-w2) /log(n2/n1)
I= (70-20)/log(100/10)
I= 50
Hence, the ans is option (b)
Method 2
W1=70(10/25)^0.121=62.65
W2=20(100/25)^0.121=23.65
W1-W2=38.99 (Wrong)
Why? This is an empherical Formula and the value of the exponent is between 0.068 to 1.210.
Amit said:
8 years ago
Answer is 35.
Dhanraj khatik said:
8 years ago
Use interpolation.
y-0.70=[(0.20-0.70)/(100-10)]*(25-10).
y=62% ans.
y-0.70=[(0.20-0.70)/(100-10)]*(25-10).
y=62% ans.
Deepak said:
8 years ago
Thanks for your answers.
Surya dev said:
8 years ago
By interpolation, we can find the liquid limit corresponding 25 no of blows do not for the gate to take no of blows on lag scale.
Sumeet kulkarni said:
8 years ago
@Pratima Yadav.
The formula you put is right but followed that formula we supposed to get 39 (62.56-23.56) this option was not given.
The formula you put is right but followed that formula we supposed to get 39 (62.56-23.56) this option was not given.
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