International Research Journal of Engineering and Technology (IRJET) Volume: 10 Issue: 04 | Apr 2023
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e-ISSN: 2395-0056 p-ISSN: 2395-0072
Subgrade Soil Stabilization Using Ground Granulated Blast Furnace Slag, Fly Ash & Silica Fume 1Mahabubi Sheikh, 2Jyoti Shukla, 3Kousick R V, 4Janhavi Meshram, 5Alkesh Bhalerao.
Department of Civil Engineering. New Horizon Institute of Technology and Management, Thane, Maharashtra ----------------------------------------------------------------------***-------------------------------------------------------------------review, a gap in research work is identified in order to ABSTRACT: Subgrade soil is an important part of the conduct additional research.
road pavement structure because it supports the pavement layers such as the subbase, base, and wearing courses from beneath. The properties of subgrade soil are critical for the design of a pavement structure. Any weakness in the subgrade soil affects all of the overlying layers of pavement, especially flexible pavement. The subgrade should be stable enough under adverse weather conditions to support the pavement. Poor subgrade conditions cause waves, corrugations, rutting, and shoving in blacktop pavements. Stabilization is a broad term for the various methods of modifying the properties of a soil to improve its engineering performance and use in a variety of engineering works. The varying percentage of Fly ash, Silica fume and GGBS were with mixed with soil sample to conduct the soil test
II. LITERATURE REVIEW Nanda et al. (2016) studied experimental investigations that are made to evaluate the unconfined strength including compaction characteristics of Lithomarge soil (shedi soil) stabilized with ground Granulated Blast furnace Slag (GGBS) and lime. It was found that the inclusion of lime can significantly enhance the UCS values of stabilized shed soil. Abhijit et al. (2015) have conducted an experimental study to find the effect of ground granulated blast furnace slag (GGBS) and Sisal fibres on the mechanical properties of black cotton soil. In the initial, the basic properties of black cotton soil and sisal fibre were found out. The next phase focuses on the unconfined compressive strength and CBR values of the mixture of black cotton soil and the optimum dosage of GGBS randomly reinforced with varying percentages of sisal fibres. The results indicated that with the addition of GGBS to black cotton soil the maximum dry density increased, and optimum moisture content decreased. The unconfined compressive strength and CBR values increased the addition of sisal fibres to a mixture of black cotton soil and optimum dosage of GGBS. The highest result was obtained for a mixture of black cotton soil and optimum dosage of GGBS with 0.75% of sisal fibers
Keywords – Soil stabilization; Murrum soil; Fly ash; GGBS; Silica fume; California bearing ratio; Unconfined compression strength test; Standard proctor test.
I. INTRODUCTION The soil is weak and unstable enough to support heavy loads. The study's goal is to use waste material for soil stabilisation. For this project, we chose to use waste industrial materials that are commonly available as waste in every nook and cranny of not only our country, but the entire world. To improve the strength of sub-grade soils, soil reinforcement techniques can be a significant secondary market for waste industrial materials such as GGBFS, Fly Ash, and SilicaFume. This technique has been found to be an effective and dependable method for increasing the strength of sub-grade soils. When compared to an untreated and weaker subgrade, a treated or stronger subgrade soil requires a relatively thinner section of a flexible pavement, resulting in a significant cost advantage. Geotextiles and other polymeric reinforcements, such as geogrids, have become increasingly popular in geotechnical engineering over the years. However, in some cases, particularly for low cost. The experimental work was used to study the stabilisation of murrum soil using industrial waste. These works are evaluated in light of the methodology, principal, and various aspects of the situation. Based on the literature
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Dayalan et al. (2016) has conducted experiments with different amounts of fly ash and GGBS. The performance of stabilized soil is evaluated using physical and strength performance tests like specific gravity, Atterberg limits, standard proctor test, and CBR test at optimum moisture content. From the results, it was found that the optimum value of fly ash is 15% and GGBS is 20% for stabilization of given soil based on CBR value determined. Dr.A.I. Dhatrak et.al. (2015) After reviewing performance of plastic waste mixed soil as a geotechnical material. It was observed that for construction of flexible pavement to improve the sub grade soil of pavement using waste plastic bottles chips is an alternative method. In his
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