Soil Modification by the Application of Steel Slag

Akinwumi, I. I.

doi:10.3311/ppci.7239

Cited by 74 publications

(31 citation statements)

References 15 publications

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“…Specific gravity, Atterberg limits, compaction, unsoaked and soaked CBR, unconfined compression and permeability tests were conducted on the natural (0% WMF content) and treated (2%, 6% and 10% WMF contents) soil samples, respectively. Each of these tests was carried out in triplicate (Akinwumi 2014c) and their mean values determined. The tests were conducted according to the procedures outlined in BSI (1990a;1990b).…”

Section: Experimental Workmentioning

confidence: 99%

Experimental Insights of Using Waste Marble Fines to Modify the Geotechnical Properties of a Lateritic Soil

Akinwumi

Booth

2015

Journal of Environmental Engineering and Landscape Management

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Abstract. Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Keywords: TNT, bioaugmentation, biostimulation, phytoremediation, microbial community.

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Section: Experimental Workmentioning

confidence: 99%

Experimental Insights of Using Waste Marble Fines to Modify the Geotechnical Properties of a Lateritic Soil

Akinwumi

Booth

2015

Journal of Environmental Engineering and Landscape Management

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“…Such a uniform size of steel slag could help the mixing of granules in the experiment. In order to know the constituents of the EAFO steel slag, chemical experiments are performed to analyze the EAFO steel slag composition [26]. Detailed information is provided in Table 1.…”

Section: Direct Shear Test and The Optimum Moisture Content 31 Constmentioning

confidence: 99%

Mechanical Characterizations of Oxidizing Steel Slag Soil and Application

Cheng

et al. 2017

Period. Polytech. Civil Eng.

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“…The predominance of silica in the soil suggests that this soil was formed from laterite on an acidic rock and that it contains some quartz (Akinwumi, 2014).…”

Section: Materials Characterisationmentioning

confidence: 99%

“…Therefore, the stabilized-contaminated soil requires less water to reach optimum (Akinwumi, 2014). The higher specific gravity of cement (typically 3.15), compared with that of the contaminated soil (2.51), is responsible for increasing maximum dry unit weight of the stabilizedcontaminated soil as its cement content increases.…”

Section: Effects Of Stabilisation Of the Crude-oil Contaminated Soil mentioning

confidence: 99%

Cement stabilisation of crude-oil-contaminated soil

Akinwumi

Booth

Diwa

et al. 2016

Proceedings of the Institution of Civil Engineers - Geotechnica

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Crude-oil-contaminated soils are usually considered unsuitable construction materials for earthworks. This paper presents an experimental investigation of the effects of applying Portland cement on the plasticity, strength and permeability of a crude-oil-contaminated soil in order to ascertain its suitability for use as an earthworks construction material. Series of specific gravity, Atterberg limits, compaction, strength and permeability characteristics were determined for a natural soil, the soil after being artificially contaminated with crude oil and the contaminated soil with varying proportions of added cement. It was found that the geotechnical properties of the soil became less desirable after contamination with crude oil, but the application of cement to the contaminated soil improved its properties by way of cation exchange, agglomeration and cementation. Cement stabilisation of crude-oil-contaminated soil provides a stable supporting structure, as well as a capping layer, that prevents the crude oil from interacting with the construction materials above. Thus, instead of disposing of contaminated soils, creating unnecessary waste and incurring costs, stabilisation with cement – which is practically feasible to undertake on site – makes such soils useful for supporting structural foundations or road pavement structures.

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Soil Modification by the Application of Steel Slag

Abstract: This paper provides experimental insights on the modification of a soil using electric arc furnace (EAF)

Cited by 74 publications

References 15 publications

Experimental Insights of Using Waste Marble Fines to Modify the Geotechnical Properties of a Lateritic Soil

Experimental Insights of Using Waste Marble Fines to Modify the Geotechnical Properties of a Lateritic Soil

Mechanical Characterizations of Oxidizing Steel Slag Soil and Application

Cement stabilisation of crude-oil-contaminated soil

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