Final Year Project Base On Cbr M/c

1. A PROJECT PRESENTATION BASED
ON
SUBGRADE REDESIGN USING ROAD ADMIXTURES
PRESENTED BY -
Ravi Kumar Sharma
Nitin Singh Bisht
Yudhir Ahluwalia

2. INTRODUCTION
Pavement
A floor or covering of solid material lay so as to make a hard and convenient surface for travel.
Example: a paved road or sidewalk.
Types of pavement
Pavements are typically divided into the following three general categories: flexible, rigid and
unpaved (gravel or dirt).
Majorly divided in two types :
Flexible pavement (Bituminons pavement)
Rigid pavement (concerte pavement)

3. STANDARD PROCTOR TEST
SUBGRADE OF FLEXIBLE
PAVEMENT
Outline of Project
CALIFORNIA BEARING RATIO
CONCLUSION
SIEVE ANALYSIS
1
3
4
5
6
2 DIFFERENT ADMIXTURES

4. DIFFERENT KIND OF LAYERS IN FLEXIBLE PAVEMENT
Sub-grade
Sub-Base
course Base course

5. ADMIXTURES
Admixture means adding something as an ingredient to change its properties.
Here,
Admixtures are added to the sub grade soil to change its properties so as to stabilize the soil .
Various types of soil admixtures (i.e. fly ash, cement kiln dust, lime) and locally available.
materials (i.e., slate dust, rice husk ash) are being used for stabilization of soil .

6. ADMIXTURES WE USED :
1) Lime powder
2) Sugarcane fibre
3) Egg shell

7. LIME POWDER
Lime is a calcium-containing inorganic material in which carbonates, oxides, and hydroxides
predominate .
TYPES OF LIME :
• NATURAL HYDRAULIC LIME
• ARTIFICAL HYDRAULIC LIME
Quick lime is produced by the reaction : Caco3+heat Cao+co2 .

8. SUGARCANE FIBRE
Sugarcane produces mainly two types of biomass, Cane Trash and
Bagasse. Cane Trash is the field residue remaining after harvesting the Cane stalk.
Bagasse is the milling by-product which remains after extracting
sugar from the stalk .

9. EGG SHELL
An Eggshell is the outer covering of a hard-shelled egg and of some forms of eggs with soft
outer coats.
Calcium rich egg shell is a poultry waste with chemical composition nearly same as that of
limestone.
Eggshell waste can be used as fertilizer, animal feed ingredients and other such uses.

10. STEPS TO CHECK THE STRENGTH OF SUBGRADE SOIL USING
ADMIXTURES
Step 1: Excavation of Soil .
Step 2: Sieve Size Analysis.
Step 3: Oven Dry .
Step 4: Standard Proctor test
Step 5: CBR test
step a) sample preparation.
step b) compaction by static method.
step c) Sample Readings.
step d) Using Admixtures .
Step 6 : Conclusion
Subgrade
Strength
Checks
1.
Excavation
2.
Sieve Size
Analysis
3.
Oven Dry
4.
Standard
Proctor Test
5.
California
Bearing Ratio
6.
Preparation
of
Sample
7
Static
compaction
8.
Sample
Reading &
Admixture
9.
Conclusion

11. EXCAVATION