International Research Journal of Engineering and Technology (IRJET) Volume: 12 Issue: 03 | Mar 2025
www.irjet.net
e-ISSN: 2395-0056 p-ISSN: 2395-0072
MECHANICAL PROPERTIES OF PALM FIBER CONCRETE PRODUCED WITH PALM OIL FUEL ASH 1 Dr. K.Chandramouli, 2 J.Sree Naga Chaitanya, 3Ravi Sinha 1Professor & HOD, 2Assistant Professor, 3PG Student
1,2,3Department of Civil Engineering, NRI Institute of Technology, Visadala (V), Medikonduru (M), Guntur, Andhra
Pradesh, INDIA ----------------------------------------------------------------------------***--------------------------------------------------------------------------
Abstract: - With the rapid expansion of construction activities, the environmental impact of traditional concrete technology
has become a growing concern. To tackle this issue, researchers have developed innovative concrete solutions, including admixtures that enhance strength properties while minimizing ecological harm. This study examines the mechanical and physical properties of composites reinforced with palm fibers and produced with palm oil fuel ash (POFA). Cement was partially replaced with POFA at varying percentages of 10%, 20%, 30%, and 40%, and each batch was further modified with palm fibers at different percentages of 0%, 0.5%, 1%, 1.5%, and 2% by weight of cement. The aspect ratio of palm fibers was kept at 50. The effects of POFA replacement and palm fiber addition on the properties of composites were evaluated. The results demonstrated notable improvements in mechanical and physical properties with the inclusion of palm fibers. The optimal replacement percentage of POFA and palm fiber content was determined. Compressive and split tensile strengths were evaluated at 7 and 28 days. Keywords: Palm oil fiber, Palm oil fuel ash, Environmental, Admixtures, Compressive and Split tensile Strength.
1. INTRODUCTION Concrete is inherently brittle, possessing low tensile strength, limited ductility, and minimal resistance to cracking. Micro-cracks are present within the concrete, and its poor tensile strength is attributed to the propagation of these microcracks, resulting in the brittle nature of concrete. In plain concrete and similar brittle materials, structural cracks can develop even before loading due to drying shrinkage and other causes. When a load is applied, the internal cracks propagate and expand due to stress, leading to the formation of additional cracks. The development of these cracks is responsible for the inelastic deformation in concrete. Palm oil fiber (POF) serves as a sustainable and eco-friendly reinforcement material. Derived from palm oil empty fruit bunches, POF offers a unique combination of strength and durability. In concrete applications, POF can enhance mechanical properties and reduce shrinkage. Additionally, POF is a cost-effective alternative to traditional steel reinforcement, promoting a greener and more sustainable construction industry. Palm oil fuel ash (POFA) is a by-product of palm oil mill boilers and can be used as a supplementary cementitious material (SCM) in concrete. Replacing cement with POFA reduces greenhouse gas emissions and conserves natural resources. POFA also enhances concrete's workability and durability, making its use in concrete a sustainable and environmentally friendly option.
2. MATERIALS Cement: Cement is a fine powder that acts as the primary binding agent in concrete. It is composed of limestone, clay, sand, and other minerals. When mixed with water, cement forms a paste that hardens over time, binding aggregate particles together and creating a strong, durable structure. It is a crucial component in construction, used in buildings, roads, and infrastructure projects. Fine Aggregates: Fine aggregate refers to smaller-sized particles of aggregate, typically passing through a 4.75mm sieve. It consists of natural sand, crushed stone, or a combination of both. Fine aggregate plays a critical role in concrete by filling the gaps between coarse aggregate particles, thereby improving the workability, density, and overall strength of the concrete.
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