Project presentation

1. PROPERTIES OF CLAY
BRICKS REINFORCED BY
NATURAL FIBRES
- GROUP 8
• HAYANA. M.U
• DEVADATHAN.V.M
• ABISHEK.K.S
• AJAY.K.S
• SNEHA.C.S
SECOND EVALUATION
Guide – Manasa P S

2. INDEX
1. INTRODUCTION..........................1
2. MUD BRICK..................................2
3. OBJECTIVE...................................3
4. PROCEDURE.................................4
5. MIX PROPORTIONS....................5
6. WORK DONE ...............................6
7. TESTS CONDUCTED.................10
8. OVEN MODEL BURNER...........19
9. CERTIFICATES...........................22
10. REFERENCES.............................24

3. INTRODUCTION
• CONCRETE WASTE IS ONE OF THE MOST IMPORTANT ISSUE FACED
BY THE CONSTRUCTION INDUSTRY.
• MAJOR PART OF THIS WASTE MATERIAL IS CONCRETE BRICKS,
EASY AVAILABILITY AND LOW COST OF THESE BRICKS IS THE
REASON FOR LARGE SCALE PRODUCTION AND CONSUMPTION.
• DUE TO THE COST AND STRENGTH, MUD BRICKS ARE OBSOLETE
NOWADAYS.
• WHAT ABOUT INTRODUSING MUD BRICKS REINFORCED BY
NATURAL FIBERS?
1

4. MUD BRICKS
• The mud is considered as one of the oldest construction material in the
world. Mud bricks are made from mixture of soil, clay, water and
natural fibres ( Rice husk, Saw dust, Straw)
STRAW. SAWDUST. RICEHUSK 2

5. OBJECTIVE
The objective of this study is to investigate the compressive strength of
naturally reinforced clay bricks to produce well efficient modular size mud
bricks also to reduce the usage of concrete blocks.
3

6. • Materials – soil, straw, sawdust, rice husk, moulds
• Procedure – take the dry weight of soil and add 2% of the natural
fiber to the soil. Add water and mix the clay into a soft cream like
stage. Provide A coat of oil in the mould and fill the mould as three
layers and compact it well. Lift the mould after setting the brick.
Continue the process to make required number of bricks. Dry the
bricks in shade for 1 week then dry under direct sunlight for 3-4
weeks.
PROCEDURE
4

7. CLAY STRAW SAWDUST RICE HUSK
98% 2% - -
96% 4% - -
94% 6% - -
98% - 2% -
96% - 4% -
94% - 6% -
98% - - 2%
96% - - 4%
94% - - 6%
MIX PROPORTIONS
5

8. Preparation of moulds
for bricks of size 19*9*9
WORKS
DONE
6

9. WORKS
DONE
Visited brick production
(paliyekkara) for basic ideas
of manufacturing.
7

10. WORKS
DONE
All the group members assigned
for 3 days for the preparation of
bricks.
8

11. WORKS
DONE
Shaping and cleaning the edges
of bricks for better appearance
and for testing.
9

12. TESTS CONDUCTED
• PH DETERMINATION
Water used for production of bricks is
tested in Environmental Engineering lab
in the presence of Hima miss ( lab
incharge)
pH of water sample
- By universal indicator – pH 7
- By pH Paper – pH 7
Water used is potable
10

13. TESTS CONDUCTED
• ATTERBERG LIMITS OF SOIL
From experiment done in
Geotechnical engineering lab,
Plastic limit of soil
(approximate) – 35 %
Original value ( 25 – 55%)
Liquid limit
(approximate) – 70%
Original value (50-115%)
Plastic index – 27%
Original value (25 -60 %)
11

14. TESTS CONDUCTED
• WATER ABSORPTION OF BRICK
For unburnt bricks there is no clause in
IS Provisions .
But from our studies the water of
absorption Capacity of these unburnt
bricks are 4-5 hours.
Hence the water absorption is failed.
12

15. TESTS CONDUCTED
• COMPRESSIVE STRENGTH OF BRICK
13

16. • STRAW
14

17. • SAW DUST
15

18. • RICE HUSK
16

19. Final result of compression test
The bricks were unburnt but still they are highly compressive in nature
specially the straw reinforced bricks.
compressive strength of straw bricks = 6.1- 7.3 N/mm²
Compressive strength of Sawdust bricks = 3.65 – 4.15 N/mm²
Compressive strength of Ricehusk bricks = 2.2 – 2.7 N/mm²
Compressive strength of burnt clay bricks = 3- 5 N/mm²
17

20. These bricks have required
compressive strength, but It fails in
the water absorption and fire
resistance .
So How to strengthen the Bricks?
🤔
By burning the bricks we can
strengthen them. Introducing a
burner for this mud bricks is not
easy due to the presence of natural
fibres.
18

21. OVEN MODEL BURNER
19

22. An oven model burner is required,
The bricks will be coated with mud ( 1.5 cm thick) On 6 faces of
bricks and then they are Secured inside the oven. The bricks
were heated at 700 – 900° C upto 20 – 25 minutes and then
cool down.(For normal bricks it is between 900 – 1200° C) The
process is repeated 5,6 times then the bricks gets stronger
enough.
20
Materials Required
• Resistance coils having resistance
of 30 ohms
• Alumina silicate fire bricks
• Refractory mortar
ALUMINA SILICATE FIRE BRICKS

23. 21
REFRACTORY MORTAR RESISTANCE COILS
SEMICIRCULAR HOLES FOR FITTING COILS
Now lets look at the preparation.
Burner model

24. PARTICIPATION CERTIFICATES
OF HIT OVER PROJECT EXPO
22

25. 23

26. 1. Abbas O. Dawood, Faten I. Mussa, Hayder Al Khazraji, Hussain A. Abd Ulsada, Mohammed M.
Yasser “INVESTIGATION OF COMPRESSIVE STRENGTH OF STRAW REINFORCED
UNFIRED CLAY BRICKS FOR SUSTAINABLE BUILDING CONSTRUCTION” Civil and
Environmental Engineering Vol. 17, Issue 1, 150-163, DOI: 10.2478/cee-2021-0016
2. Chee-Ming Chan E, “Effect of Natural Fibres Inclusion in Clay Bricks: Physico-Mechanical
Properties”, International Journal of Civil and Environmental Engineering 3:1 2011
3. Farraj Al-Ajmi, Hany Abdalla, Magdi Abdelghaffar, Jamal Almatawah “Strength Behavior of Mud
Brick in Building Construction” Open Journal of Civil Engineering, Civil Engineering Department,
College of Technological Studies, The Public Authority for Applied Education & Training, Kuwait,
2016, 6, 482-494 Published Online June 2016
4. Fayçal El Fgaiera, Zoubeir Lafhaja, Franck Bracheletb, Emmanuel Antczakb,Christophe Chapiseauc
“Thermal performance of unfired clay bricks used in construction in the north of France: Case study”
Case studies in construction materials, September 2018
REFERENCES
24

27. 5. GOOGLE
6. Mahgoub M. Salih*, Adelaja I. Osofero, and Mohammed S. Imbabi, “MECHANICAL PROPERTIES OF
FIBRE- REINFORCED MUD BRICKS” School of Engineering, University of Aberdeen, Aberdeen, United
Kingdom, December 2018
7. Mushtaq Ahmed1*, Mahzuz HMA1, Rakash Kumer Mondal2, Md. Sal-Shabil2 “Production of Lightweight
Bricks Using Saw dust” Scholars Journal of Engineering and Technology , July 2020
8. Oumaima El Hazzat, Dr. Asmae Khaldone “STRAW REINFORCED UNFIRED CLAY BRICKS” SCHOOL
OF SCIENCE & ENGINEERING – AL AKHAWAYN UNIVERSITY, April 2020
9. Rafid Shams Huq1, Farhana Chowdhury2 “Use of Rice Husk Ash as Substitute to Make Clay bricks”
International Journal of Innovative Research in Science, Engineering and Technology Vol. 7, Issue 10, October
2018
10. Yousif I. Mauloud “Straw Stabilized Local Clay Bricks” Zanco, Jomnal of Pure and Applied Sciences I
Salahnddin lJniversny llawler. Vol. 9, 'lo 2 , June 2007
REFERENCES
25

28. THANK YOU
ANY QUERIES?