International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 03 | Mar -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
EVALUATION OF GEOTECHNICAL CHARACTERISTICS OF RED MUD LIME SOIL MIXTURE 1Aman
Jain 2Prof. Rajesh Jain
1ME
scholar,2Associate Professor Jabalpur Engg. College,Jabalpur Engineering College, Jabalpur Abstract: Red mud is a waste residue produced in the process of extraction of alumina from bauxite. The process is called Bayer’s Process. It is insoluble waste product and is produced after bauxite digestion with sodium hydroxide at high temperature and pressure. This paper describes the characteristic properties of Red Mud and possible use as a filling and backfill material in various geotechnical purposes. Basics properties like Specific gravity, Particle size distribution, Consistency’s limit, OMC and MDD are determined and Engineering properties like Permeability and CBR values are also determined in confirmity with the Indian Standard Code and test results are discussed in geotechnical point of view. It revealed that the behavior of red mud is same as that of Black cotton soil with considerably high strength compared to conventional BC soil.
Keywords: Bauxite residue, Red mud geotechnical materials, environmental safety.
generated per ton of alumina produced [1]. In India, about 4.71 million tons/annum of red mud is produced which is 6.25% of world’s total digestion with sodium hydroxide at high temperature and pressure [2]. It is a mixture of compounds originally present in the parent mineral bauxite and of compounds formed or introduced during the Bayer’s process. It is disposed as slurry having a solid concentration in the range of 10-30%, pH in the range of 10-13 and high ionic strength. Considerable research and development work for the storage, disposal and utilization of red mud is being carried out all over the world [3]. This article provides an overview of the basic characteristics of red mud. The main ways of comprehensive utilization are also summarized. It describes the progress of experimental research and comprehensive utilization. The aim is to provide some valuable information to further address the comprehensive utilization of red mud. Table1 listed out the chemical and mineral composition of red mud that are produced by Bayer’s process [4]. Table-1: Chemical Composition of Red mud Composition Percentage (%) Fe2O3 30-60% Al2O3 10-20% SiO2 3-5% Na2O 2-10% CaO 2-8% Based on the past study, there is an improvement in the soil behavior by introducing the lime [5]. Lime has been known as one of the good soil stabilization materials, especially for clay stabilization properties that have a swelling and generally its swelling properties will be much reduced, even if the soil mixed with lime. The presence of Ca+2 cations on the elements of lime can provide bonding between the particles that expands on soil properties [6] and [7].
utilization,
INTRODUCTION: Industrialization and urbanization are the two world wide phenomena. Though these are the necessity of the society and are mostly inevitable, one has to look into their negative impacts on the global environment and social life. The major ill effect of these global processes is the production of large quantities of industrial wastes and the problems related with their safe management and disposal. Second problem is the scarcity of land, materials and resources for ongoing developmental activities, including infrastructure. Red mud is waste product in the slurry form produced during the process for alumina production. Depending on the raw material processed, 1–2.5 tons of red mud is
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