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 7 of 13.
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.
Amit said:
8 years ago
Answer is 35.
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.
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%.
Hatem Alhamaidi said:
8 years ago
Answer is:
LL = 61.7 % by interpolation.
LL = 61.7 % by interpolation.
Naresh said:
8 years ago
I think aprox 65 is correct.
Sasi said:
8 years ago
Why we say liquid limit at 25 blows? What is the reason?
Bikashbiru said:
8 years ago
Yes, I agree @Ramesh.
Madhur said:
8 years ago
Answer is B, why are you taking the difference between 100 and 10 values?
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