Stabilization of alluvial soil for subgrade using rice husk ash, sugarcane bagasse ash and cow dung ash for rural roads

Yadav, Anjani Kumar; Gaurav, Kumar; Kishor, Roop; Suman, Sanjeev Kumar

doi:10.1016/j.ijprt.2017.02.001

Cited by 119 publications

(29 citation statements)

References 2 publications

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“…Compared to sole lime, the addition of wheat straw fly ash presents an additional reduction in plasticity index. This reduction in plasticity index is in line with results presented in [11] and results in a soil improvement in terms of higher stability and less swelling affinity. This is also confirmed by a linear swelling test conducted in parallel to the CBR testing.…”

Section: Resultssupporting

confidence: 91%

“…This also presents an improvement in soil characteristics, since earth works may be done with more moisture in soil during the rainy season. The decrease in MDD may be due to the low specific gravity of bio-ash replacing higher specific gravity lime [11,17], which is also confirmed by measuring SSA by the BET surface analyses. All used ashes have significantly higher SSA compared to lime, as presented in Section 2.1.…”

Section: Resultsmentioning

confidence: 84%

“…Research results indicate that 6–8% cement and 10–15% rice husk ash are optimal additions for residual soils from the viewpoints of plasticity, compaction, strength characteristics and cost [10]. The stabilisation of alluvial soil by biomass ashes from rice husk and sugar cane bagasse results in a plasticity index decrease with an increase in the proportion of ash from 2.5% to 12.5%, with the optimal ash content for stabilisation reported to be 7.5% [11]. Admixing of rice husk ash, bagasse ash and rice straw ash with soil results in a higher optimal moisture content as the dosages of stabilisers increase [12].…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of Agricultural Biomass Fly Ash Usage for Soil Stabilisation of Road Works

et al. 2019

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Agricultural biomass ash is a waste material produced by incineration of residue from fields after harvesting crops. The use of agricultural biomass in industry produces large quantities of ash that represent an ecological problem. Another ecological problem is the dependency of road building on natural materials, which has been traditionally used for all pavement layers. Today, roads are built on less accessible and suitable terrains, increasing the need for improving the mechanical characteristics of locally available materials by various means of stabilisation. Within this research, three agricultural biomass fly ashes are used as lime substitutes for hydraulically stabilised soil. The purpose of this research is evaluation of potential use of agricultural biomass fly ash for the soil stabilisation of road works, i.e., for embankment and subgrade purposes. The results indicate that there is a potential of using barley, sunflower seed shells and wheat fly ash as lime substitutes in the soil stabilisation of road works. The strength characteristics of stabilised soil incorporating biomass fly ash are highly dependent on its chemical composition. Using a three-dimensional digital image correlation technique, it is concluded that the elastic properties of stabilised soil correlate to a fracture mechanism that can be efficiently defined by this modern research tool.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

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Feasibility of Agricultural Biomass Fly Ash Usage for Soil Stabilisation of Road Works

et al. 2019

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“…For example, rice husk ash is one of these new binders that are being used. The general effect of this ash consists of an increase in the unconfined compressive strength and a decrease in the swelling pressure [6,14,15]. Also, bagasse ash is being studied as a potential addition to expansive soils.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Improvement Effect of Limestone Powder Waste in the Stabilization of Swelling Clayey Soil

et al. 2019

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The natural stone industry generates large amounts of industrial waste every year. Limestone powder produced by the activity of this industry is dumped into landfills, generating an environmental impact that could be reduced by using this waste as a binder in building materials. In the present work, the use of this by-product as an addition for soil improvement of clayey soils has been studied. The tested natural soil is a soft clay from southeastern Spain, which has been mixed by adding 5, 10, 15, 20, and 25% of dry limestone dust by total dry weight of the soil. The natural soil and the additive have been characterized, in addition to the common geotechnical tests, by means of X-Ray diffraction and X-Ray Fluorescence. The improvement of the geotechnical properties of the mixed soil has been evaluated by means of the change in the Atterberg limits, free swell index, unconfined compressive strength, and one-dimensional consolidation test. The change in the microstructure of the mixed soil has been studied by scanning electron microscopy. In general, the results obtained show an increase in the strength of the soil and a reduction of its deformability when limestone powder is added.

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“…Accordingly, sewage can be a suitable replacement for cement or any expensive chemical stabilizer [6]. Soil stabilization has been carried out by the addition of different materials, such as Bagasse ash [7][8][9][10][11], rice husk ash [12], lime [13], fly ash [14,15], fuel oil fly ash [16], cement [17], coal ash [18], granulated blast furnace slag [19][20][21][22], and cement kiln dust [23][24][25]. Previously, the effective impact of potassium alum was observed on monazite in contrast with bastnaesite during flotation separation because of the special adsorption of hydrolyzed aluminum species [26].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Sustainable Soil Stabilization Process Using Waste Materials

Aamir¹,

Mahmood²,

Nisar³

et al. 2019

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The process of soil stabilization is a fundamental requirement before road infrastructure development is possible. Different binding materials have been used worldwide as soil stabilizers. In this study, water treatment waste (i.e., alum sludge (AS)) was used as a soil stabilizer. Alum sludge can work not only as a low-cost soil stabilizer but also can solve the problem of waste management at a large scale. Utilization of alum waste can be a sustainable solution and environmentally friendly exercise. Thus, in consideration of the pozzolanic properties of alum, it was applied as a binder, similar to cement or lime, to stabilize the soil with the addition of 2%, 4%, 6%, 8%, and 10% of dry soil by weight. To analyze the resulting improvement in soil strength, the California Bearing Ratio (CBR) test was conducted in addition to three other tests (i.e., particle size analysis, Atterberg’s limits test, and modified proctor test). The soil bearing ratio was significantly improved from 6.53% to 16.86% at the optimum level of an 8% addition of alum sludge. Furthermore, the artificial neural networks (ANNs) technique was applied to study the correlations between the CBR and the physical properties of soil, which showed that, at 8% optimum alum sludge, maximum dry density, optimum moisture content, and plasticity index were also at maximum levels. This study will help in providing an eco-friendly soil stabilization process as well as a waste management solution.

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Stabilization of alluvial soil for subgrade using rice husk ash, sugarcane bagasse ash and cow dung ash for rural roads

Cited by 119 publications

References 2 publications

Feasibility of Agricultural Biomass Fly Ash Usage for Soil Stabilisation of Road Works

Feasibility of Agricultural Biomass Fly Ash Usage for Soil Stabilisation of Road Works

Evaluation of the Improvement Effect of Limestone Powder Waste in the Stabilization of Swelling Clayey Soil

Performance Evaluation of Sustainable Soil Stabilization Process Using Waste Materials

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