This paper contains the properties of flyash based papercrete bricks which are suitable for the earthquake prone areas. and also the brick are made from the waste material.

1. STUDIES ON DURABILITY,
STRENGTH AND STRUCTURAL
PROPERTIES OF FLYASH BASED
PAPERCRETE BUILDING BRICK
By
Satyajit Behera
Roll no:-1707320012

2. What is papercrete?
Papercrete is essentially a type of
industrial strength paper maché made
with paper and cardboard, sand and
Portland cement.

3. Why papercrete?
special value because of its insulating qualities
(about R-2 per inch)
it utilizes an often wasted material, such as old
newspaper, junk mail, magazines
It can be used either as building blocks for walls
or poured into forms for walls.

4. Why flyash based papercrete
brick?
To utilize the waste materials like paper,
flyash etc, in the process of manufacturing a
new type of eco-friendly bricks

5. METHODOLOGY – FLOW CHART
STUDIES ON BEHAVIOUR OF
PAPERCRETE MASONARY UNIT
STUDIES ON STRENGTH OF
PAPERCRETE BRICKS
COMPARISON WITH FEM
ANALYSIS
COMPARISON WITH CONVENTIONAL
BRICKS
VIABILITY AND COST ANALYSIS
CONCLUSION/
SUGGESTION
MIX OPTIMIZATION
PERCENTAGE OF WATER
ABSORPTION
MAKING THE SPECIMEN
PROPERTIES OF MATERIALS
PRILIMINARY TEST
BIO DEGRADATIONCOMPRESSIVE STRENGTH

6. Making process
1.converted into slurry form.
2. the pins, threads and other materials were removed.
3. the papers were torn into small pieces and all the torn pieces
of papers were immersed in water
4. papers were kept in water for 3 to 5 days for degradation like
paste.
5. taken out from the water tank and shredded into little pieces
6. required amount of water was added at the time of mixing.
7.place the pulp inside the mould for casting.

7. Test conduction and result for the
papercrete bricks.
Preliminary:- compressive strength and percentage of water
absorption.
Results:
 Only the outer faces cracked and peeled out.
The compressive strength was decreased while increasing the paper
percentage into papercrete mix.
compression strength of the mix was increased when the sand
proportion was high in the mix

8. CONPLAST WP-90
Papercrete Mix Optimization
With Flyash
Due to high water absorption value we add
waterproofing agents.
Powder water
proof 105
SBR latex polymer

9. 56%
7%
21%
14%
1%
1%
Ingredients in optimum mix

10. For the exposed surfaces,
During the biodegradation
test:-
We use 2 types of external coating
Zycosil
primseal 604

11. 0
10
20
30
40
50
60
1:0.2:0.4 1:0.3:0.6 1:1.5:0.5:4
Water absorption result of trial mixes
with conplast wp90 with powder water proof 105 with powder water proof 105 and SBR Latex Polymer

12.  percentage of water absorption of flyash based papercrete brick
was minimized without loss of strength
 from trial mixes indicate that the internal waterproofing
admixture plays an important role in papercrete mix
In the bio-degradation test, external coating improves the
durability of the papercrete bricks.
 two coats of Raincoat with prime seal 604 coated flyash based
papercrete mix were chosen as an optimized mix for further work

13. Testing Of Strength And Durability Of Flyash
Based Papercrete Building Bricks
1. Compression Test
2. Chemical Attack Test
3. Acid Attack
4. Chloride Attack
5. Sulphate attack
6. Behaviour of Papercrete Bricks Under Elevated
Temperature
7. Sorptivity of Papercrete brick

14. CONCLUDING REMARKS
• papercrete bricks satisfy the limits specified by the code for conventional clay
bricks.
• Coating of the papercrete bricks is absolutely necessary for durability purpose.
• the coated and uncoated flyash based papercrete bricks are higher than 4
N/mm2
• The uncoated papercrete bricks are not suitable for the construction of exterior
unprotected walls because they have very high water absorption.
• The coated papercrete bricks may be used for the construction of exterior walls if the
plastering has to be done.

15. • Flyash based papercrete brick masonry had a high energy
absorption capacity (4 times) in comparison to
conventional clay brick masonry.
• It had 1.7 times higher ductility factor than conventional
clay brick masonry.
• The stiffness of the masonry was very low and it proved
the ductile nature.
• From these results, it is established that the masonry is
suitable for the construction in earthquake-prone zone
areas.

16. COST ANALYSIS
How much does it cost?

17.  it is more than 12% of the cost of flyash brick.
coated flyash based papercrete brick is more than 28%
in relation to the cost of conventional clay brick .
The cost of flyash based papercrete brick was worked
out as rupees 10/- per brick and it is marginally costlier
than conventional bricks.

18. Thank you