The Use of Compacted Tropical Clay Treated With Rice Husk Ash as a Suitable Hydraulic Barrier Material in Waste Containment Applications

Eberemu, Adrian O.; Amadi, Agapitus Ahamefule; Osinubi, Kolawole J.

doi:10.1007/s12649-012-9161-3

Cited by 34 publications

(9 citation statements)

References 21 publications

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“…Similar types of results are also reported by Eberemu et al (2013) and Basa et al (2005) that with higher RHA content of the soil the MDD decreases and also OMC increases. Eberemu et al (2013) opined that decrease in MDD was due to low specific gravity of RHA compared to that of the soil.…”

Section: International Journal Of Geotechnical Engineeringsupporting

confidence: 88%

“…From the curve it is observed that with increase in RHA content (0-30%), the values of specific gravity also decreases irrespective of types of fine grained soil. Eberemu et al (2013) also found similar results in the case of tropical clay treated with RHA.…”

Section: Specific Gravity Of Rha and Soil Mixturesupporting

confidence: 74%

“…Eberemu et al (2013) opined that decrease in MDD was due to low specific gravity of RHA compared to that of the soil. On the other hand, Eberemu et al (2013) also explained that OMC increases with higher RHA due to the increase in fines from the RHA with large surface areas that required more water for hydration.…”

Section: International Journal Of Geotechnical Engineeringmentioning

confidence: 99%

“…They also developed a number of numerical models to estimate the dry density of pond ash and also MDD of pond ash. A limited number of literature (Basa et al, 2005;Eberemu et al, 2013) available on compaction on rice husk ash (RHA) and soil mixture or soil stabilized with lime/cement RHA. In the present investigation an attempt has been made to study in detail compaction characteristics of fine grained soil and RHA mixture.…”

Section: Introductionmentioning

confidence: 99%

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Compaction characteristics of fine grained soil and rice husk ash mixture

Bera

2013

International Journal of Geotechnical Engineering

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This study presents the compaction characteristics of fine grained soil and rice husk ash (RHA) mixture. Three types of fine grained soils viz., montmorillonite clay, kaolinite clay, and one local soil has been used in the present study. From the compaction tests results it is observed that with increase in RHA content (0-30%) maximum dry density (MDD) decreases and also optimum moisture content (OMC) increases irrespective of types of fine grained soil. Based on the experimental data, a number of linear regression models have been developed to estimate MDD and also OMC of fine grained soil and RHA mixture. Empirical models also presented to estimate dry density in terms of water content of dry side of optimum or water content of wet side of optimum, compaction energy, RHA content, and also specific gravity of fine grained soil and RHA mixture. The above models may be useful for the field engineers within the range of compaction energy from 300 kJ m 23 to 2700 kJ m 23 , RHA content from 0%-30%, specific gravity of fine grained soil and RHA mixture from 2?311-2?750, and OMC for soil from 16?8%-37?0%.

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Section: International Journal Of Geotechnical Engineeringsupporting

confidence: 88%

Section: Specific Gravity Of Rha and Soil Mixturesupporting

confidence: 74%

Section: International Journal Of Geotechnical Engineeringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Compaction characteristics of fine grained soil and rice husk ash mixture

Bera

2013

International Journal of Geotechnical Engineering

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“…Studies reported in the literature [10][11][12] showed that some compacted soil liners do not meet the requirement for landfill use in their natural form and need to be improved using industrial additives like cement, bitumen and lime which are relatively expensive and are not friendly to the eco-system. The use of agro-industrial wastes that exhibit pozzolanic properties are also not ecofriendly.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of soil-water characteristic curves for compacted lateritic soil – bacillus coagulans mixtures

et al. 2021

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A comparative study of soil-water characteristic curves (SWCCs) for compacted lateritic soil ̶ Bacillus coagulans (B. coagulans) mixtures for municipal solid waste (MSW) application was studied. Soil treatment was performed at approximately about one-third pore volume of the microbes (i.e., B. coagulans) for suspension densities of 0, 1.5×108, 6.0×108, 1.2×109, 1.8×109 and 2.4×109cells/ml, correspondingly. Soil specimens were prepared at optimum moisture content (OMC) of British Standard light (BSL) compaction energy. Cementation reagent was applied on the compacted soil and permitted to penetrate until partial saturation was achieved. A set-up of pressure plate extractor was employed to measure the volumetric water content, θ (VWC) in the laboratory for varying matric suctions with a minimum of 10 kPa up to a maximum of 1,500 kPa. The unsaturated hydraulic conductivity (UHC) and VWC were assessed using Brooks - Corey (BC) and Fredlund - Xing (FX) models. Largely, BC and FX models overrated the VWC. Also, the VWC decreased with higher matric suction for the two models considered and the laboratory measured values. The UHC predicted for matric suctions of 500 and 1,500 kPa initially decreased for B. coagulans suspension density up to 1.2×109 cells/ml for BC and FX models, with the exception of a few cases, but thereafter increased with increase in microbial density. For FX model at 1,500 kPa, UHC values of 2.42×10–9, 2.02×10–9, 9.31×10–10, 8.09×10–10 , 1.29×10–9 and 2.27×10–9m/s were recorded at 0, 1.5×108, 6.0×108, 1.2×109, 1.8×109 and 2.4×109cells/ml, respectively. In the case of BC model, values of 2.26×10–17, 1.41×10–14, 2.2×10–14, 4.6×10–19 , 3.25×10–17 and 2.45×10–14m/s were recorded at 0, 1.5×108, 6.0×108, 1.2×109, 1.8×109 and 2.4×109cells/ml, respectively. Thus, the FX model met the design maximum hydraulic conductivity value of 1 x 10–9 m/s requirement for MSW system when lateritic soil was treated with B. coagulans suspension density of 1.2×109 cells/ml, while the BC model satisfied the requirement for all the microbial densities considered and it is recommended for modelling of UHC of lateritic soil admixed with B. coagulans for MSW containment application.

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