In a CBR test, the load sustained by a remoulded soil specimen at 5 mm penetration is 150 kg. The CBR value of the soil will be:

This question was previously asked in
BHEL Engineer Trainee Civil 24 Aug 2023 Official Paper
View all BHEL Engineer Trainee Papers >
  1. 4.56%
  2. 5.87%
  3. 8.26%
  4. 7.29%

Answer (Detailed Solution Below)

Option 4 : 7.29%
Free
BHEL Engineer Trainee Fluid Mechanics Mock Test
1.4 K Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

Concept:

CBR test is strength test conducted on the soil by introducing surcharge load at the compaction rate of 1.25 mm per minute on a completely soaked soil sample passing through 20 mm sieve size.

\({\rm{CB}}{{\rm{R}}_{\rm{\delta }}} = \frac{{{{\rm{P}}_{\rm{\delta }}}{\rm{\;of\;soil}}}}{{{{\rm{P}}_{\rm{\delta }}}{\rm{\;of\;standard\;crushed\;aggregate}}}} \times 100\)

δ = displacement in mm

Pδ = Load corresponding to ‘δ’ settlement

Ps = Load for standard crushed aggregate:

 At 5 mm penetration Standard load Ps = 2055 kg

 At 2.5 mm penetration standard load Ps = 1370 kg

Calculation:

 Given,

 Sustained load at 5 mm penetration = 150 kg 

\(CBR = \;\frac{{{\rm{Load\;carried\;by\;specimen}}}}{{{\rm{load\;carried\;by\;standard\;specimen}}}} \times 100\)

At 5 mm penetration, \(CBR = \;\frac{{150}}{{2055}} \times 100 = 7.29\% \)

Latest BHEL Engineer Trainee Updates

Last updated on Jul 8, 2025

-> The BHEL Cut Off 2025 has been uploaded on July 8, 2025 at the official website 

-> BHEL Engineer Trainee result has been released on July 8. 

-> BHEL Engineer Trainee answer key 2025 has been released at the official website. 

-> The BHEL Engineer Trainee Admit Card 2025 has been released on the official website.

->The BHEL Engineer Trainee Exam 2025 will be conducted on April 11th, 12th and 13th, 2025

-> BHEL Engineer Trainee 2025 Notification has been released on the official website.

-> A total of 150 Vacancies have been announced for various disciplines of Engineering like Mechanical, Electrical, Civil, etc.

-> Interested and eligible candidates can apply from 1st February 2025 to 28th February 2025.

-> The authorities has also released the BHEL Engineer Trainee Pattern 

-> The BHEL Engineer Trainee Selection Process is divided into two stages namely Written Test and Interview.

-> The selected candidates for the Engineer Trainee post will get a salary range between Rs. 60,000 - Rs. 1,80,000.

Get Free Access Now
Hot Links: teen patti master apk best teen patti star login teen patti joy 51 bonus teen patti rules teen patti gold apk