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.
Ritesh said:
9 years ago
According to me,
By using the method of interpolation, my answer is 50.10.
By using the method of interpolation, my answer is 50.10.
Lokesh said:
9 years ago
61.7 is the correct answer, So it is option D.
Siva said:
8 years ago
Why should we take the liquid limit value at 25 blows only? If there any relation, please explain it.
Suman Ghosh said:
8 years ago
Answer 50% is correct.
W = - I log N + C.
W = water content , I = flow index, N= no of blow.
Put value of w & N for both 70% & 20%, then results will be, I=50 & C=120. Now w= -50*log 25 + 120 = 50.1.
W = - I log N + C.
W = water content , I = flow index, N= no of blow.
Put value of w & N for both 70% & 20%, then results will be, I=50 & C=120. Now w= -50*log 25 + 120 = 50.1.
Harshdeep said:
8 years ago
Simply take x= 0.068.
and WL = Wn (N÷25)^x .
WL = 70 (10÷25 )^0.068 = 68.77 approx 65.
and WL = Wn (N÷25)^x .
WL = 70 (10÷25 )^0.068 = 68.77 approx 65.
Alekhya said:
8 years ago
Water content at 25 blows gives you the liquid limit.
Just interpolate the given values for 25 blows. You get the answer as 65.
Just interpolate the given values for 25 blows. You get the answer as 65.
Brijesh Singh Satyal said:
8 years ago
Flow index = -(W2-W1) / ln(N1/N2).
From the given data, it comes out to be 50.
From the given data, it comes out to be 50.
Amit Kumar said:
8 years ago
Plot it on semilog graph and find water contentbfor 25 blow.
Madhur said:
8 years ago
Answer is B, why are you taking the difference between 100 and 10 values?
Bikashbiru said:
8 years ago
Yes, I agree @Ramesh.
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