International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 04 | Apr 2025
p-ISSN: 2395-0072
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SUSTAINABLE CEMENTITIOUS MATERIALS: EVALUATING ALCCOFINE AND LIME SLUDGE FOR ECO-FRIENDLY CONCRETE PRODUCTION V Santhosh kumar1, N Sai vijay2, V Viswanadh3, N G V Siva4 1,2,3,4Student, Department of Civil Engineering, SRGEC ,Gudlavalleru, Andhra Pradesh, India.
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Abstract - Cement production, a cornerstone of global
sludge, a waste product generated by the paper industry. The use of lime sludge aimed to reduce cement consumption and promote the recycling of industrial waste, contributing to sustainable construction practices.
construction and infrastructure, is among the largest contributors to carbon emissions, accounting for approximately 8% of global CO₂ output. Each stage of its production generates significant greenhouse gases, underscoring the need for sustainable practices to mitigate its environmental impact. This study explores the potential of supplementary cementitious materials (SCMs) such as alccofine and lime sludge to partially replace traditional cement and reduce its carbon footprint. Lime sludge is a residual substance came from the paper sector. Initially, alccofine was incorporated at replacement levels of 10%, 20%, and 30% by weight of cement to determine the optimal proportion. Subsequently, using the optimal alccofine percentage lime sludge was replaced at varying replacement levels 5%, 10%, and 15%. The mechanical properties of these concrete mixtures, including workability, compressive strength, split tensile strength, and flexural strength, were systematically assessedand compared with conventional concrete, highlighting the viability of these SCMs in sustainable concrete production. Results indicate that mix consisting 20% alccofine and 10% lime sludge performed better when compared to conventional concrete.
The experimental work was conducted in two phases. Initially, alccofine was used to replace cement at 10%, 20%, and 30% by weight to determine the optimal proportion based on mechanical performance. After identifying the bestperforming alccofine percentage, lime sludge was added to the mix at 5%, 10%, and 15% replacement levels. The resulting concrete specimens were tested for mechanical properties such as workability, compressive strength, split tensile strength, and flexural strength. Furthermore, This project aimed to demonstrate the potential of alccofine and lime sludge as effective and sustainable alternatives to traditional cement, with the goal of reducing environmental impact while maintaining the quality and strength of concrete.
1.1 Literature review 1P. R. K. Chakravarthy and R. Rathan raj, (2017) analyzed the
compressive strength of concrete by partial replacement of cement with alccofine. They replaced cement with alccofine at a percentage 0%, 4%, 8%, 16%, 25%, 50%, 75%, 100%.They conducted tests such as setting time , split tensile strength , flexural strength, impact test, compressive strength. They concluded that 16% replacement of alccofine can give maximum compressive strength and resistance against chloride attacks.
Key Words: Alccofine,Lime Sludge
1.INTRODUCTION The construction industry had long relied on cement as a fundamental material in the development of infrastructure such as buildings, roads, and bridges. However, cement production had become a significant environmental concern due to its high energy consumption and substantial carbon dioxide (CO₂) emissions. It had been estimated that the cement industry contributed nearly 8% of global CO₂ emissions, making it one of the largest industrial sources of greenhouse gases.
2R.Balamurali Krishnan & J. Saravanan, (2021) investigated
that replacement for cement to enhance environmental sustainability and improve the mechanical properties of concrete. Several industrial by-products, including fly ash, silica fume, GGBS, metakaolin, and quartz powder, have been widely studied. The focus is on Alccofine-1203, an ultrafine material derived from glass waste, which has shown promising results in improving the compressive strength of cement mortar cubes. Studies indicate that a 10% replacement of cement with alccofine provides optimal strength gains, making it a viable supplementary cementitious material.
To address this issue, various strategies had been explored to make concrete more sustainable. One effective approach involved the use of supplementary cementitiousmaterials (SCMs), which are industrial by-products capable of partially replacing cement in concrete. These materials helped reduce the carbon footprint of concrete while also improving or maintaining its performance.
3R.
Pranamika& S. Thirugnanasambandam, (2024) investigated the potential of Alccofine 1203 as a cement replacement in concrete to enhance strength, durability, and sustainability. Researchers explored how varying
In this study, two SCMs were selected for investigation: alccofine, a highly reactive, finely ground slag-based material known for enhancing strength and durability; and lime
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