International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 05 | May 2025
p-ISSN: 2395-0072
www.irjet.net
Bio-Based Materials in Sustainable Concrete: A Review on Mechanical Performance, Environmental Impact, and Practical Challenges Muskan1 and Nitu2 Civil Engineering Department, Matu Ram Institute of Engineering & Management, Model Town, Rohtak, Haryana 124001 ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Concrete remains a cornerstone of modern
sand, and coarse aggregates. Bio-materials are derived from renewable, natural sources and offer several advantages, including waste reduction, lower energy consumption, and potentially enhanced material properties. By replacing a portion of conventional concrete ingredients with bio-based materials, it is possible to not only mitigate environmental harm but also improve the performance characteristics of the resulting concrete.
infrastructure, yet its production especially cement manufacturing contributes significantly to global CO₂ emissions and environmental degradation. This review explores the emerging use of bio-based materials as partial replacements for conventional concrete constituents such as cement, sand, and coarse aggregates. Specifically, wood ash, rice husk ash, and corn cob granules are examined for their pozzolanic activity, silica content, and lightweight properties, respectively. These materials offer environmental and economic advantages including reduced carbon footprint, lower material costs, and enhanced durability and thermal performance. However, challenges such as variability in chemical composition, lower early-age strength, high water absorption, and limited structural applications persist. The review highlights current experimental findings, performance metrics, and case studies demonstrating the practical feasibility of these bio-materials. It also identifies gaps in knowledge related to mix optimization, long-term durability, and standardization. As sustainable construction gains global momentum, the integration of bio-based waste into concrete presents a promising pathway toward low-carbon, circular construction practices provided future research addresses the material limitations and performance uncertainties.
1.1
The construction industry is heavily reliant on concrete, a material whose production has significant environmental consequences, primarily due to the energy-intensive process of cement manufacturing. Cement production alone accounts for approximately 8% of global carbon dioxide emissions, making it a major contributor to climate change. Despite its widespread use, traditional concrete has limitations in terms of sustainability, resource depletion, and environmental impact. With the growing emphasis on sustainable development and eco-friendly construction practices, the need to reduce the environmental footprint of concrete has become increasingly urgent. One approach to addressing this issue is through the partial replacement of conventional materials, such as cement, sand, and coarse aggregates, with bio-based materials derived from renewable sources. These materials, including wood ash, rice husk ash, and corn cob granules, offer promising alternatives due to their availability, low cost, and potential to reduce the demand for non-renewable resources.
Key Words: Bio-based materials, Wood ash, Rice husk ash, Corn cob aggregate, CO₂ emissions, Cement replacement, Green construction, Waste utilization
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INTRODUCTION
This Concrete, a widely used construction material, is composed primarily of cement, sand, water, and aggregates. Its unparalleled versatility, strength, and durability have made it a fundamental material in modern infrastructure. However, the environmental impact of concrete production is substantial, primarily due to the energy-intensive process of cement manufacturing. Cement production alone is responsible for a significant share of global carbon dioxide emissions, contributing to the ongoing challenges of climate change. As a result, there is increasing pressure to develop more sustainable alternatives to traditional concrete ingredients.
Table 1: Various bio-based materials, their production methods, and their uses in concrete:
One promising approach to reducing the environmental footprint of concrete is the use of bio-based materials as partial replacements for conventional materials like cement,
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Impact Factor value: 8.315
Problem Statement
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Bio-based Material
Uses in Concrete
Benefits
Challenges
Wood Ash
Cement replacement, enhances strength
Reduces CO₂ emissions, Cost-effective
Chemical variability, Delayed early strength
Rice Husk Ash (RHA)
Sand/cement replacement, improves durability
High silica content, Reduces water permeability
Quality variability, Affects workability
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