Experimental Study on Partial Replacement of Coarse Aggregate with Over Burnt Bricks in Pervious Concrete

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Experimental Study on Partial Replacement of Coarse Aggregate with
Over Burnt Bricks in Pervious Concrete
Mr. Dhruv Vijayvargiya1, Mr. Aakash Suthar2
1Student, Master in Structural Engineering, L.J.I.E.T, Gujarat, India
2Assistant Professor, Structural Engineering Department, L.J.I.E.T, Gujarat, India
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Abstract – The research focuses on using overburnt brick
aggregate as a sustainable and cost-effective alternative
material for pavement construction. This study looks at
pervious concrete, which is recognized for its ecologically
benign and hydrologically sustainable properties. Several
design parameters, including as aggregate gradation,
water-cement ratio, and fine aggregate percentage, are
investigated to determine their influence on the mechanical
strength and pore characteristics of pervious concrete
mixes. Prediction equations are constructed based on
statistical analysis of experimental data to estimate the
porosity, permeability, and compressive strength of these
mixtures. This study advances the understanding and
utilization of overburnt brick aggregate as a sustainable
choice in construction, notably for pavement systems. The
data given here provide important information for
developing and implementing pervious concrete mixture
Key Words: Pervious Concrete, Over Burnt Bricks,
Compressive Test
1.INTRODUCTION
Concrete, a frequently used artificial material in building,
is made up of cement, sand, coarse aggregate, and water.
Due to the escalating cost of cement and sand, it is
necessary to investigate less expensive alternatives. This
research will look at the impacts of partially substituting
cement and sand with waste products like fly ash and
stone dust. The study aims to achieve equivalent
performance in terms of overall building quality with
these substitutes. Finding sustainable alternatives
becomes increasingly important as natural resources
decrease and CO2 levels grow. River sand, a key
component of concrete strength, is being replaced with
stone dust, and fly ash is being utilized in place of cement.
Varying quantities of fly ash and stone dust are tested to
see how they affect flexural and compressive strength. By
deploying new materials as partial replacements in
concrete buildings, the research hopes to contribute to
environmental preservation and cost reduction in
construction.
2. Material properties
Pervious concrete is a porous type of concrete designed
for water permeability. It comprises overburnt bricks, fly
ash, cement, coarse aggregate, fine aggregate, and water.
Overburnt bricks replace some coarse aggregate,
providing voids for water flow. Fly ash enhances strength
and permeability. Cement acts as a binding agent, while
coarse aggregate consists of larger particles and fine
aggregate consists of smaller particles, improving strength
and workability. Water hydrates the cement, forming a
solid structure. Pervious concrete benefits stormwater
management, reduces runoff, and promotes groundwater
recharge. It finds applications in parking lots, sidewalks,
and green infrastructure.
2.1 Cement
Cement is a binding agent that holds the concrete mixture
together. It reacts with water to form a paste that hardens
over time, providing strength to the pervious concrete.
2.2 Fine Aggregate
Fine aggregate consists of smaller particles, such as sand.
It helps fill the gaps between the larger particles,
improving the overall strength and workability of the
pervious concrete mixture.
2.3 Coarse Aggregate
Coarse aggregate consists of larger particles, such as
crushed stone or gravel. In pervious concrete, overburnt
bricks are sometimes used as a partial replacement for
coarse aggregate to create voids and promote water
infiltration.
2.4 Fly Ash
Fly ash is a byproduct of coal combustion in power plants.
It is commonly used as a supplementary cementitious
material in concrete production. In pervious concrete, fly
ash is often added to the cement mixture to enhance its
strength, durability, and permeability.
2.5 Over Burnt Bricks
These are bricks that have been subjected to high
temperatures during the manufacturing process, resulting
in a darker color and increased porosity. They are used as
a partial replacement for traditional coarse aggregate in
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023 www.irjet.net p-ISSN: 2395-0072

pervious concrete, providing void spaces for water to pass
through.
2.6 Water
Water is a crucial component in the concrete mix, enabling
the cement to hydrate and form a solid structure. In
pervious concrete, the water-to-cement ratio is carefully
controlled to ensure proper hydration while maintaining
the desired permeability.
3. Experimental Work
This experimental work focuses on creating pervious
concrete by incorporating overburnt bricks and 10% fine
aggregate, with the aim of evaluating its compressive
strength. The procedure involves mixing the 15%
overburnt bricks with fly ash, cement, coarse aggregate,
and water, while adding 10% -15% fine aggregate. The
mixture is carefully proportioned and thoroughly blended
to achieve a uniform consistency. The pervious concrete is
then cast into specimens and subjected to a controlled
curing process. After the curing period, the compressive
strength of the specimens is measured using standard
testing methods. The results of this study will provide
valuable insights into the feasibility and performance of
pervious concrete with overburnt bricks and 10% and
15% fine aggregate, aiding its potential application in
construction projects.
For this experiment, a total of 60 cubes were casted, with
three cubes being prepared for each mix proportion from
the five categories specified in the table provided. This
approach ensures an adequate sample size to analyze and
evaluate the performance of different combinations within
each category.
Table 1Mix Proportion of Material
Aggregate
Garde
Fine Aggregate
%
Water Cement
Ratio
A1 10
15
0.30
0.32
0.30
0.32
A2 10
15
0.30
0.32
0.30
0.32
A3 10
15
0.30
0.32
0.30
0.32
A4 10
15
0.30
0.32
0.30
0.32
A5 10
15
0.30
0.32
0.30
0.32
4. Results
The cubes have been successfully casted and are now
prepared for analysis. These cubes serve as representative
samples of the concrete mixture used in the experiment.
They have undergone the necessary curing period to
develop their strength and other relevant properties
Fig -1 pervious concrete
4.1 Compressive Strength test
In total 60 cube has been casted of 150x150x150 mm.
Where 3 cube has mix of only cement, sand and aggregate.
Other 3 has mix of cement with fly ash and 3 cube has mix
of cement with cattle manure ash. And remaining cube has
mix of cement with cattle manure ash and fly ash.
Table 2 Compressive strength result (Mpa)
A1
10% 6.67 6.66 6.67
15% 7.15 7.1 7.18

A2
10% 7.11 7.05 7.18
15% 9.81 9.77 9.81
A3
10% 6.67 6.66 6.67
15% 7.15 7.1 7.18
A4
10% 6.67 6.66 6.67
15% 7.15 7.1 7.18
A5
10% 6.67 6.66 6.67
15% 7.15 7.1 7.18
3. CONCLUSIONS
This experimental study concludes that:
 The water-cement ratio, a crucial design
parameter impacting mix workability, should be
selected within the specified range (0.3-0.32) to
achieve a medium workable mix, as extreme
values can compromise the strength of the porous
matrix.
 The gradation of aggregates impacts the
mechanical and pore properties of pervious
concrete. Smaller size aggregates enhance
strength but reduce porosity, while single-graded
aggregates offer higher porosity but lower
strength compared to dense-graded mixes.
 In summary, for pavement works in low-traffic
areas, pervious concrete provides an efficient and
eco-friendly solution that effectively manages
stormwater while maintaining the required
structural integrity. It offers a sustainable and
durable pavement surface that promotes
environmental preservation and supports long-
term water management goals.
 Using over burnt brick aggregate in pervious
concrete can offer cost advantages by utilizing
locally available and recycled materials, reducing
transportation costs, and minimizing the need for
extensive drainage infrastructure
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