International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 04 | Apr 2025
p-ISSN: 2395-0072
www.irjet.net
M30 GRADE CONCRETE MIX USING SOILD WASTE AGGREGATES (COCONUT SHELL CONCRETE) K.M. Jayakumari1, G. Sandeep Achari2, P. Vasudeva Rao3, P. Meghana4, S. Chaitanya5 1Assistant professor SVPEC (Andhra university) Civil Engineering 2,3,4,5 B. Tech Student SVPEC (Andhra university) Civil Engineering
------------------------------------------------------------------------***------------------------------------------------------------------------and tunnels. Its adaptability allows for various types, Abstract : The rising cost of construction is a growing
such as reinforced, precast, and high-performance concrete, to meet structural and environmental needs. Concrete is also used in infrastructure projects, offshore platforms, and harbour structures. Floating concrete platforms are being explored for airports and power plants to reduce land congestion. Despite its benefits, finding a durable and costeffective alternative remains a challenge. Durability in concrete depends on proper curing, which maintains moisture levels for strength development. However, the growing scarcity of fresh water is a concern, with nearly half the world's population expected to face shortages by 2025. Since billions of litters are used in mixing and curing, sustainable alternatives and water-efficient curing methods are crucial for the future of construction.
concern, primarily driven by the increasing prices of building materials. Concrete, a key component in construction, consists mainly of coarse aggregate, fine aggregate, and cement. Construction companies heavily rely on these materials for concrete production. Recent research has focused on reducing construction costs while improving concrete strength. Various waste materials have been explored as partial replacements for aggregates based on their properties. Among them, fly ash, rice husk ash, and blast furnace slag have been identified as effective substitutes for fine aggregate in concrete. Agriculture plays a crucial role in India’s economy, with coconut production being a significant sector. However, coconut shells, a byproduct of this industry, pose disposal challenges and contribute to environmental pollution if not managed properly. Using coconut shells as a partial replacement for coarse aggregate in concrete presents a sustainable and eco-friendly solution. This study investigates the effects of replacing coarse aggregate with coconut shells in varying proportions (0%, 10%,15%, and 20%) for M30 grade concrete. Four different concrete mixes were prepared for each grade, with three specimens cast per mix. The primary goal is to assess the feasibility of utilizing agricultural waste like coconut shells, which are more cost-effective than traditional coarse aggregates, to develop affordable construction solutions. A 28-day short-term analysis was conducted to evaluate the properties of coconut shell aggregate concrete through tests such as compressive strength and workability. The results were compared with those of conventional concrete. To ensure durability, serviceability, and structural integrity, all necessary precautions were taken.
a) Objective of the present work The primary objective of this study is to assess the feasibility and benefits of using coconut shells as an alternative to coarse aggregate in concrete. Before incorporating coconut shells in concrete, their properties must be thoroughly understood. While coconut shells have not been widely explored as aggregates in structural concrete, this study aims to utilize them as structural components. Developing lightweight structural concrete using coconut shells—an abundant agricultural waste— could be a significant breakthrough for small-scale construction industries. This research seeks to determine the viability of using coconut shells as a sustainable material in lightweight structural concrete.
Key Words: Coconut Shell, Light Weight Concrete, Compressive Strength, Solid Waste
I.
The key objectives are:
INTRODUCTION
Concrete is one of the most widely used construction materials due to its strength, durability, and versatility. It is composed of cement, water, sand, and gravel or crushed stone. Through hydration, these materials harden over time, making concrete essential for structures like buildings, bridges, roads,
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To evaluate the workability of Coconut Shell Aggregate Concrete (CSAC) for M30 concrete mix.
To determine the compressive strength of CSAC for M30 grade concrete by conducting compressive strength tests.
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