Presentation on Determination of Penetration & Specific Gravity Test of Bitumen

1. GROUP NO. 8
EXPERIMENT NAMES:
1. Determination of penetration of bitumen.
2. Determination of specific gravity of
bitumen.

2. GROUP MEMBERS:
1. Md. Abu Taher ( 2013333060)
2. Ruhul Amin (2013333063)
3. Meftahul Alam (2013333064)
4. Md. Ruhul Amin (2013333065)
5. Md. Shahnawaz Nahid (2013333066)
6. Seema Rani Debnath (2013333067)

3. DETERMINATION OF PENETRATION OF BITUMEN

4. INTRODUCTION:
The penetration test is an empirical test used to
measure the consistency of bitumen.

5. AIM OF THE PENETRATION TEST:
1. To find out the hardness or softness of
bitumen.
2. To determine the consistency of bituminous
material.
3. To determine the grade of bitumen.

6. APPARATUS:
1. Penetrometer.
2. Needle.
3. Water bath.
4. Stop watch.
5. Thermometer.
6. Container.
7. Heater.
8. 100gm Load.

7. CALCULATION:
S. N Time
(sec)
Initial
Reading
Final
reading
Penetration Avg.
Penetration
Penetration
(in mm)
01 5 105 136 31
02 5 110 142 32 30.67 3.1
03 5 120 139 29

8. RESULT:
The penetration of bituminous material is
30.67

9. CONCLUSION:
We found that our sample lies in the range of
30-40 Grade which is recommended for
warmer regions. As Bangladesh is a
comparatively warm region, this sample is
usable for road construction.

10. DETERMINATION OF SPECIFIC GRAVITY OF BITUMEN

11. INTRODUCTION:
The ratio of mass of a given volume of bitumen
to the mass of an equal volume of water, both
taken at a specified temperature. The specific
gravity of bitumen varies from 1.03 to 1.06.

12. AIMS OF THIS TEST:
This test is done to determine the specific
gravity of semi-solid bitumen road tars.

13. APPARATUS:
1. Pycnometer.
2. Glass.
3. Water bath.
4. Thermometer.
5. Weight apparatus.

14. CALCULATION:
Empty weight of pycnometer (A) = 37.289 gm.
Weight of pycnometer + water (B) = 97.014 gm.
Weight of pycnometer + partly filled bitumen (C) = 45.156 gm.
Weight of pycnometer + partly filled bitumen + partly filled water (D)
= 97.226 gm.
Specific gravity
=
(𝑪−𝑨)
[ 𝑩−𝑨 −(𝑫−𝑪)]
= (45.156 ˗ 37.289) / [(97.014 - 37.289) - (97.226 45.156)]
= 1.027

15. RESULT:
The specific gravity of our sample was 1.027.

16. CONCLUSION:
The expected specific gravity of bituminous
material should lie in the range of 1.03-1.06.
But our sample showed the specific gravity of
1.027 which is close enough to the desired
value.

17. REFERENCE:
SK Khanna and CEG Justo. Highway
engineering. Nem Chand & Bros, 1991.

18. THANKS