Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
2.0k views
in General by (115k points)
closed by
The compression index of soil-
1. increases with an increase in the liquid limit.
2. decrease with an increase in plastic limit.
3. none of these
4. decreases with increase in liquid limit.

1 Answer

0 votes
by (114k points)
selected by
 
Best answer
Correct Answer - Option 1 : increases with an increase in the liquid limit.

Explanation:

For undisturbed low to medium sensitivity soils, the coefficient of compression or compression index (Terzaghi and Peck empirical index)

Cc = 0.009(LL - 10)

For disturbed low to medium sensitive soil (Skempton's empirical index)

Cc = 0.007(LL - 10)

So, If the liquid limit is increased then, the compression index of soil will increase.

Compression Index:

  • The compression index (Cc) is the slope of the linear portion of the pressure–void ratio curve on a semi-log plot, with pressure on the log scale (IS: 8009 – Part 1, 1976).
  • This is a dimensionless parameter.
  • For any two points on the linear portion of the plot-

   \({C_c} = \frac{{{e_o} - {e_1}}}{{\log \left( {\frac{{{p_1}}}{{{p_o}}}} \right)}}\) 

Where

po and p1 are pressures corresponding to e0  and e1  respectively

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...