Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion
Discussion Forum : Soil Mechanics and Foundation Engineering - Section 3 (Q.No. 30)
30.
The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m2 to 50 tonnes/m2, the coefficient of compressibility is
Discussion:
13 comments Page 1 of 2.
Nandish said:
8 years ago
e0 = initial void ratio = 1.5.
e = final void ratio = 1.25.
P0 = initial pressure = 25 t/m2.
P = final pressure =50 t / m2.
for co efficient of compressibility.
an = ((eo - e) / (p-po)) = (( 1.50-1.25)/(50-25)) = 0.01.
for compressibility index use;
= (( eo - e)/ (log (p/po)).
e = final void ratio = 1.25.
P0 = initial pressure = 25 t/m2.
P = final pressure =50 t / m2.
for co efficient of compressibility.
an = ((eo - e) / (p-po)) = (( 1.50-1.25)/(50-25)) = 0.01.
for compressibility index use;
= (( eo - e)/ (log (p/po)).
(6)
Vikash said:
1 decade ago
Coefficient of compressibility = change in e/change in stress.
= (1.50-1.25)/(50-25).
= 0.01.
= (1.50-1.25)/(50-25).
= 0.01.
Biki said:
7 years ago
.01 is correct.
The Coefficient of compressibility is asked, log should be used in the denominator if coefficient of compression (also known as compression index).
The Coefficient of compressibility is asked, log should be used in the denominator if coefficient of compression (also known as compression index).
(2)
Rameshwar said:
8 years ago
CC = change in e/log10(initial stress+increased stress/initial stress).
Cc = 0.25/log(50/25) = 0.83.
Cc = 0.25/log(50/25) = 0.83.
Prachi said:
7 years ago
The Answer is correct. The Coefficient of compressibility is asked that is e/σ= 0.25/25.
Pranav said:
10 years ago
Cc = Change in e/log (Final pressure/Initial pressure).
= (1.50-1.25)/log(50/25) = 0.8304.
= (1.50-1.25)/log(50/25) = 0.8304.
Shakti said:
4 years ago
How you will get the coefficient?
@Nandish.
The Unit will be m2/t, right?
@Nandish.
The Unit will be m2/t, right?
Sagar nadavadekar said:
7 years ago
Av= -(eo-e)/po-p.
= -(1.25-1.5)/50-25,
=0.01.
= -(1.25-1.5)/50-25,
=0.01.
(1)
Yogesh said:
9 years ago
@Pranav.
That is Coefficient of Compression index.
That is Coefficient of Compression index.
Sanku said:
5 years ago
Given Answer is correct. I agree.
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