highway engineering labartory CBR Test Report Discussion Points 7. What is the reason of compacting the soil before testing? 8. Why, in normal the value of CBR at penetration of 2.54 mm is greater than the value of CBR at a penetration of 5.08 mm.

highway engineering labartory CBR Test Report Discussion Points 7. What is the reason of compacting the soil before testing? 8. Why, in normal the value of CBR at penetration of 2.54 mm is greater than the value of CBR at a penetration of 5.08 mm.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Compaction

Section: Chapter Questions

Problem 5.2P

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Concept explainers

Soil Compaction Test

Soil compaction is the major area of geotechnical engineering. Soil is composed of multiple pores present on its surface, while the soil is mainly composed of gravel, sand, rocks, etc. The arrangement of these rocks and gravels is such that they build up voids (spaces) between them, which allows spaces for the roots of the plants and crops to spread and absorb the required amount of nutrients. Soil compaction is a major problem primarily caused by human activities, micro-organisms, and other multiple factors.

Question

highway engineering labartory

CBR Test

Report Discussion Points

7. What is the reason of compacting the soil before testing?
8. Why, in normal the value of CBR at penetration of 2.54 mm is greater than the value of CBR at a
penetration of 5.08 mm.

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