Influence of Compactive Efforts on Bagasse Ash Treated Black Cotton Soil

Osinube, K G; Thomas, Swapna

doi:10.4314/njser.v7i1.28422

Cited by 18 publications

(16 citation statements)

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“…Osinubi et al [23] looked into the compatibility of stabilization of lateritic soil with BA and municipal solid waste leachate. Osinube and omas [24] studied influence of compaction on BA-treated black cotton soil. Ali et al [25] investigated the effects of combination of marble dust and BA in stabilization of an expansive soil.…”

Section: Introductionmentioning

confidence: 99%

“…e optimal combination of 16% lime sludge and 8% BA almost doubled the UCS of the soil; however, a strength of 120 kPa of the stabilized soil was very low in comparison with the present study which may be due to the use of lime sludge instead of lime whose calcium content is lesser than lab grade lime. Osinube and omas [24] found that combinations of 8% cement and 4% BA produced signi cant improvement in soil strength but still did not meet the criteria of 1710 kPa strength for use as base materials suggested by TRRL. Earlier work cited adopted trial and error combinations of lime and BA, and the strengths reported were low.…”

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confidence: 99%

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Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

James¹,

Pandian²

2018

Advances in Civil Engineering

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The study dealt with the effect of addition of sugarcane bagasse ash (BA) on the strength development of a lime stabilized expansive soil. Unlike previous investigations with combinations of lime and BA, this study compares the effect of lime contents determined by scientifically established procedures and the effect of BA on the stabilization of lime at different proportions with additional microstructural investigations. The minimum lime content required for stabilization known as initial consumption of lime (ICL) was determined using the Eades and Grim pH test as 5.5%. The optimum lime content (OLC) was determined using unconfined compression strength (UCS) tests as 7%. Another lime content less than ICL was randomly adopted as 3%. The three lime contents were mixed with 0.25%, 0.5%, 1%, and 2% BA. UCS samples of dimension 38 mm × 76 mm were prepared at a fixed dry density and moisture content and cured for periods of 2 hours (0 days), 3, 7, 14, and 28 days to study the development of strength and effect of BA. Mineralogical and microstructural analyses were performed on the pulverized UCS samples after failure. The results revealed that the addition of BA increased the immediate, early, and delayed strength of lime stabilized soil further, even when the lime content was lower than ICL. Addition of BA produced maximum immediate, early, and delayed strength gains of 58.3%, 20.7%, and 32.7%, respectively. Higher proportion of BA was required when lime content was above ICL, for maximum strength. Addition of BA resulted in better utilization of quartz in lime-soil reactions leading to formation of CSH and CAH minerals. A dense compact matrix was seen on analyzing the microstructure of the stabilized soil composite.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

James¹,

Pandian²

2018

Advances in Civil Engineering

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“…Furthermore, a decline in the volumetric strain is observed at OMC with increasing CKD content. This is largely attributed to the pozzolanic input of the pozzolana (Osinubi and Stephen 2007;Osinubi and Eberemu 2009). …”

Section: Volumetric Shrinkage Strainmentioning

confidence: 97%

The Influence of Compactive Effort on Compacted Lateritic Soil Treated with Cement Kiln Dust as Hydraulic Barrier Material

Osinubi

Moses

Liman³

2014

Geotech Geol Eng

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The paper evaluates the suitability of lateritic soil treated with up to 10 % cement kiln dust (CKD) by dry weight of soil for the construction of waste containment facilities compacted at three energy levels. Laboratory tests were carried out on specimens prepared at molding water contents -2, 0, ?2 and ?4 % of the optimum moisture content and compacted with British standard light, West African standard or 'Intermediate' and British standard heavy (BSH) energies. Index, hydraulic conductivity, volumetric shrinkage and unconfined compression tests were carried out. Results obtained show improvement in index properties with CKD treatment. Regulatory criteria of maximum hydraulic conductivity value of 1 9 10 -9 m/s, minimum unconfined compressive strength of 200 kN/m 2 and maximum volumetric shrinkage strain (VSS) of 4 % were satisfied with a minimum 7.5 % CKD treatment when specimens were compacted at BSH energy level. The overall acceptable zone for the treated soil was achieved with 10 % CKD treatment for specimens prepared at molding water content range of 13.5-21.3 % and compacted with BSH energy.

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“…The PBA-soil mixture attained the optimum OMC of 20% at 20% PBA content. The initial increment was as a result of increasing demand for water by various cations and the clay mineral particles to undergo hydration reactions [17]. The subsequent decrease at 25% was due to cation exchange reaction that caused the flocculation of clay particles [18].…”

Section: Compaction Testsmentioning

confidence: 99%

Investigation of the impact of palm bunch ash on the stabilization of poor lateritic soil

Otunyo¹,

Chukuigwe²

2018

Nig. J. Tech.

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This study investigated the impact of palm bunch ash (PBA) on the stabilization of poor lateritic soil. The palm bunch ash in percentages by weight (0%, 20%, 25% and 30%) was added to the lateritic soil. The 0% PBA acted as the control. The following parameters of the (lateritic soil+ palm bunch ash) were tested in the laboratory: Maximum Dry Density (MDD), Optimum Moisture Content (OMC), California Bearing Ratio (CBR) and unconfined compression strength (UCS). The values of the MDD, OMC, CBR and UCS increased as the PBA content in the lateritic soil was increased up to between 25% PBA, thereafter the values started to decrease. The UCS of the (lateritic soil + palm bunch ash) specimen cured for 14 days were also found to higher than that of 28 days curing period at 20% PBA content. The UCS values for 14 days became higher than that at 28 days at 25% PBA content. The PBA can be used as a lateritic soil stabilizer between (20-25%) PBA content.

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Influence of Compactive Efforts on Bagasse Ash Treated Black Cotton Soil

Cited by 18 publications

References 0 publications

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

The Influence of Compactive Effort on Compacted Lateritic Soil Treated with Cement Kiln Dust as Hydraulic Barrier Material

Investigation of the impact of palm bunch ash on the stabilization of poor lateritic soil

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