Soil Stabilization with Rice Husk Ash

Behak, Leonardo

doi:10.5772/66311

Cited by 34 publications

(24 citation statements)

References 15 publications

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“…A lot of research on stabilizing lateritic soil using RHA has been reported in the literature [13, 14, and 15] and more is needed, especially, in mixing RHA with the conventional binders such as cement in which the influence of RHA on some soils with improvement in their engineering properties can be studied. The use of other locally produced additives including RHA, in the stabilization of lateritic and other soil types, has also been reported [16]. Table 1 shows the chemical composition of RHA as reported in the literature as discussed above [17].…”

Section: Rice Husk Ashmentioning

confidence: 99%

Compaction behaviour of lateritic soil modified with cement and rice husk ash for road construction

et al. 2019

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This study is an investigation into the possibility of using rice husk ash blended with cement (C-RHA) in the modification of the basic engineering properties of a marginal lateritic soil with the aim of qualifying the soil for use in the construction of roads. In the study, the properties of the natural soil sample such as bearing strength (measured in California Bearing Ratio: CBR), compaction behaviour as well as other consistency parameters were evaluated. The same properties were also evaluated for the soil samples modified with C-RHA. The findings of the study show that an increase in values of the C-RHA results a decrease in plasticity. An improvement in the CBR was observed with increasing value of the RHA at specified cement contents with peak values at 5% cement and 10% RHA. This indicates the potential of using 7.5-10% RHA admixed with 5% cement contents for laterite soil stabilization for use as a sub-grade soil for road construction.

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Section: Rice Husk Ashmentioning

confidence: 99%

Compaction behaviour of lateritic soil modified with cement and rice husk ash for road construction

et al. 2019

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“…In terms of compressive strength improvement, the optimum dosage for some siliceous binder types (15 to 28% for RHA [54,77]) differ from aluminosilicate binders (5 to 10% replacement dosage for GGBS [48] and MK [56,57,86]). A comprehensive comparison of optimum dosage between the two groups of pozzolans when combined with cementitious binder for different soil types e.g.…”

Section: Discussionmentioning

confidence: 99%

“…High-temperature combustion produces more crystalline forms of SiO2 as opposed to the low temperature combustion process. This can be differentiated through colourhigh temperature ash (>900 P o P C) produces fully crystalline silica and is white / pink in colour whereas lower temperature ash (500-700 P o P C) is darker (grey to black) with more amorphous silica that is more reactive [75]. This is counteracted by less SiO2 derived from lower furnace temperature furnaces vs higher furnace temperature.…”

Section: Rice Husk Ash (Rha)mentioning

confidence: 99%

Cementitious, Pozzolanic And Filler Materials For DSM Binders

2020

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Deep Soil Mix (DSM) is a proven method of ground improvement for deeper underlying soft soil layers which are otherwise impractical to reach using conventional shallow soil stabilization and replacement methods. The predominant binder materials used are Ordinary Portland cement (OPC) and Lime (CaO) but negative effects to the environment from manufacture and increasing construction cost have prompted research into alternative materials. This review identifies pozzolans and filler materials as possible supplements or partial substitutes for better results. The DSM method and binder reaction processes during treated soil strength development are outlined and effectiveness of different pozzolans (Fly Ash, Silica Fume, Ground Granulated Blast Furnace Slag, Rice Husk Ash, Kaolin, and Metakaolin) and filler materials (e.g. fine sand) discussed together with their influence factors. With many pozzolans, a clear optimum dosage is observed where improved strength peaks. Aluminosilicate pozzolans perform better over siliceous pozzolans with Metakaolin (MK) identified as the most effective pozzolan for enhancing compressive strength. Up to date research results on these materials are compiled. MK blended cements are readily available and can be readily applied for initial field tests. Treated soil strength may be regulated with addition of filler materials to further reduce reliance on cement.

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“…Pozzolanas are siliceous and/or aluminous materials, which in themselves possess minute or no cementing properties, but chemically react with calcium hydroxide, such as lime, to form compounds possessing cementitious properties. The rice husk ash contains around 90% of silica which is the maximum concentration of all plant residues [12]. A work is undertaken to study on engineering properties of black cotton soil which is stabilized using rice husk ash (RHA) and lime with randomly distributed polypropylene fiber (PPF).…”

Section: Rice Husk Ash and Limementioning

confidence: 99%

Improvement in Geotechnical Properties of Expansive Soil Using Various Stabilizers: A Review

Goutham¹,

Krishnaiah²

2020

IJEM

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Expansive soils are the soils that expand when comes in contact with water and shrinks when the water within them gets evaporates. These soil are treated as problematic soils for various construction activities hence there is an essential to improve its strength against load effects and also to alter their behaviour against moisture conditions. This review aimed to study the behaviour of expansive soil stabilized using various natural and industrial processed materials such as cement, polymer, lime, rice husk ash, stone dust, fly ash, coir fiber and its pith, jute, bagasse ash and ground granulated blast furnace slag (GGBS). The paper covers the discussion on experimental test results of black cotton soil conducted by various researchers. The tests being basic geotechnical properties, maximum dry density and optimum moisture content, unconfined compressive strength test (UCS), California bearing ratio (CBR), etc., are presented.

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Soil Stabilization with Rice Husk Ash

Cited by 34 publications

References 15 publications

Compaction behaviour of lateritic soil modified with cement and rice husk ash for road construction

Compaction behaviour of lateritic soil modified with cement and rice husk ash for road construction

Cementitious, Pozzolanic And Filler Materials For DSM Binders

Improvement in Geotechnical Properties of Expansive Soil Using Various Stabilizers: A Review

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