International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 05 | May 2024
p-ISSN: 2395-0072
www.irjet.net
Rice Husk Ash and Marble Powder are used to replace cement in concrete and Investigate the Strength Narendra Singh PG Scholar Department of Civil Engineering Mewar University, Gangrar,312901 *** ABSTRACT The rapid urbanization in India has significantly increased the demand for materials used in building construction, especially for high-rise buildings. Traditional brick-making processes have led to environmental and health issues, necessitating the exploration of alternative materials such as aerated concrete. This study focuses on Non-Autoclaved Aerated Concrete (NAAC), a lightweight, porous material known for its high acoustic and thermal insulation properties. NAAC is manufactured using aluminium powder as an air-entraining agent, eliminating the energy-intensive autoclaving process. This research thoroughly examines the properties of NAAC blocks, incorporating rice husk ash (RHA) and marble powder as partial cement replacements. The comprehensive experimental methodology encompasses the material collection, batching, mixing, moulding, curing, and testing for properties such as density, water absorption, compressive strength, and split tensile strength. The results indicate that NAAC blocks with RHA and marble powder exhibit satisfactory water absorption and density performance while providing adequate compressive and tensile strength. The compelling findings from our research strongly indicate that Non-Autoclaved Aerated Concrete (NAAC) blocks have the potential to be a practical and sustainable alternative to traditional bricks in construction. This suggests that the use of NAAC blocks could lead to a significant reduction in environmental impact and improve overall construction efficiency. Keywords: Aerated Concrete, construction, density, water absorption, compressive strength, and split tensile strength.
1. INTRODUCTION India is a developing country due to which the rapid urbanization has increased the demand for house construction resulting in the increased demand for construction materials. However, due to space constraints, the demand for high-rise buildings has increased. The increased demand for high-rise buildings has led to an increase in demand for better-performing materials such as high-strength materials, low-density etc. Bricks are widely used as one of the most essential and versatile building materials in construction. Their durability, insulation properties, and availability in various sizes and colours make them a popular choice for building projects around the world. Additionally, bricks are known for their ability to withstand diverse weather conditions and provide structural support in a wide range of architectural designs. The brick-making process directly or indirectly caused a series of environmental and health problems for the people living near the brick kiln and people working in the kiln. The environmental pollution caused by brick-making operations endangers human health, animals, and plant life. Nowadays aerated concrete is an innovative construction material used in the construction industry 60% to 80% of its volume contains pore space. Properties like strength, durability, toughness, heat transfer and wetness are affected by the pore dimension and microstructure. This porous material will provide high acoustic insulation and thermal insulation functions. However, due to increased pores, the compressive strength of cubes reduces. It is lower weight than the conventional clay bricks with a dry density ranging between 600 kg/m3 to 1600 kg/m3. Based on the method of curing, aerated concrete can be of two types which are autoclaved aerated concrete (AAC) and non-autoclaved aerated concrete (NAAC). In this study, the focus is on non-autoclaved concrete (NAAC) in which water curing of blocks has been done. Non-autoclaved aerated concrete can be created either by using a foaming agent or by an entraining mediator. In this research, aluminium powder has been used as an air-entraining agent. Various chemical reactions are involved in aerating concrete to make blocks lighter in weight from fresh mortar. The effect of aluminium powder with the hydroxide of calcium and alkali from cement and lime releases hydrogen, which causes bubbles in the mixture. The bubbles enlarge the mixture and concrete augments. Aerated concrete blocks (AC) may be one of the solutions to replace bricks. Aerated concrete
© 2024, IRJET
|
Impact Factor value: 8.226
|
ISO 9001:2008 Certified Journal
|
Page 1373