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
Enhancing Soil Stability: Investigating the Efficacy of Marble Dust and Calcium Chloride for Stabilizing the Expansive Soils. Dr. D. Koteswara Rao¹, Ganasala Manasa², Teki Goutham³, Jampani Sujitha⁴ ¹Professor, Head of The Civil Engineering Department, OSD To Hon’ble Vice Chancellor, University College of Engineering Kakinada(A), JNTUK, Kakinada, Andhra Pradesh, India ²,³,⁴ U.G. Student, Department of Civil Engineering, University College of Engineering Kakinada(A), JNTUK, Kakinada, Andhra Pradesh, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - This research attempts to investigate the effect
Key Words: Expansive soil, Marble dust, Calcium Chloride, Maximum Dry density, Optimum Moisture Content, California Bearing Ratio.
clay minerals release water when moisture is lost. This cycle of water absorption and release drives the swelling and shrinking behavior of expansive soil. To address challenges posed by expansive soil, various remedial measures can be taken to enhance the stability and durability of construction projects. Techniques like prewetting, mechanical compaction, and subgrade drainage help manage moisture content and reduce soil swelling. Geosynthetic materials such as geotextiles and geogrids can reinforce soil and provide stability. One effective approach involves soil stabilization techniques utilizing additives such as lime, cement, bitumen, rice husk ash, steel slag, and calcium chloride. Marble dust, a waste product from the marble industry, can also be used to modify the properties of expansive soil, improving its strength, cohesion, and resistance to moisture-induced volume changes. The reason for choosing Marble dust as a stabilizer is due to the fact that Marble dust contains high content of Calcium Carbonate which helps in reacting with the clay minerals present in Expansive soil. In addition, marble powder is environmental friendly and costeffective. It reduces the disposal of industrial waste and the consumption of natural resources. Calcium chloride, a chemical stabilizer, can enhance soil compaction and reduce its susceptibility to swelling by altering the soil's moisture retention characteristics.
1.INTRODUCTION
2) LITERATURE REVIEW
Expansive soils experience volume changes with moisture fluctuations. When these soils become wet and then dry, they can cause considerable damage to pavements built upon them. Pavements on such soils show distress early, leading to failures. Expansive soils have poor engineering properties like low bearing capacity, instability, and volume change, posing challenges to structures. The minerals found in these soils are mostly clays, especially those belonging to the smectite group, which includes montmorillonite. These clay minerals have a unique crystal structure with a high capacity to absorb water molecules into their interlayer spaces. When expansive soil comes into contact with water, these clay minerals absorb the water molecules, causing them to expand and the soil to swell. Conversely, soil shrinks as
Numerous studies have investigated the use of marble dust as a soil stabilizer. Marble dust, a waste product from marble processing industries, possesses pozzolanic properties and fine particle size distribution, which can contribute to improved soil stabilization.
of marble dust and Calcium Chloride on the stabilization of expansive soils. Expansive soil, also known as shrink-swell soil, responds to changes in moisture content by exhibiting notable volume fluctuations. Lightly laden civil engineering projects such as residential buildings, pavements, and canal linings suffer significant damage due to this alternate swelling and shrinkage. Therefore, reducing the issues caused by expansive soils is essential. Many creative foundation solutions have been updated to address the issue of expanding swelling soils. Some of them are Foundation design, Mechanical stabilization, and Moisture control. One method of treating expansive soil to make it suitable for construction is stabilization. This study investigates the efficacy of marble dust and calcium chloride as potential stabilizers for mitigating the expansive nature of soils. Geotechnical features of expansive clay including OMC and MDD, CBR, Atterberg limits, DFS, and strength characteristics, were assessed before and after treatment with marble powder and calcium chloride (CaCl2). The study concludes that these properties of expansive soil have significantly improved.
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1) Hassan A. M. Abdelkader et al. (2016) have conducted laboratory tests by mixing Marble dust with the expansive soil by different proportions (5%, 10%, 15%, 20%, and 25%). The following conclusions are drawn for the addition of marble dust up to 25%:
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The plasticity index decreases from 17.12% to 10.7%. The rate of decrease is more up to 15%, and after that, the rate of decline is low.
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