Chemical stabilization of soft Bangkok clay using the blend of calcium carbide residue and biomass ash

Vichan, Songsuda; Rachan, Runglawan

doi:10.1016/j.sandf.2013.02.007

Cited by 92 publications

(32 citation statements)

References 16 publications

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“…B. bei der Anwendung des Deep Soil Mixing‐Verfahrens üblich sind, identifiziert. Die Leistungsfähigkeit dieses Verhältniswerts wurde seither vielfach bestätigt und weiterentwickelt . In einer im Vergleich zu leicht umgestellten Form kann der grundsätzliche Zusammenhang zwischen der einaxialen Druckfestigkeit q u mit dem genannten Verhältniswert nach Gl.…”

Section: Der Porosity/binder‐index (N/b‐index)unclassified

Prognose der Festigkeitsentwicklung zementbehandelter Böden mit dem Porosity/Binder‐Index

Henzinger¹,

Schömig

2020

Geotechnik

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Böden mit schlechten bautechnischen Eigenschaften können durch Maßnahmen zur Bodenbehandlung für den Erdbau nutzbar gemacht werden. Einer solchen Maßnahme vorauszugehen hat der Nachweis über die Eignung des gewählten Verfahrens. Bei der Durchführung der Eignungsprüfung im Sinne des straßenbautechnischen Regelwerks wird i. d. R. nur die zugegebene Bindemittelmenge variiert. Die Auswertung der Daten erlaubt dann unglücklicherweise keine Verallgemeinerungen über die tatsächlich untersuchten Mischungen hinaus. Dabei ist bekannt, dass neben der Bindemittelmenge auch die Trockendichte die Festigkeit von verbesserten Böden maßgeblich beeinflusst. In der vorliegenden Studie wird über die Anwendbarkeit eines Verfahrens zur realitätsnahen Abbildung des Zusammenhangs zwischen Druckfestigkeit, Trockendichte (Porenanteil) und Bindemittelanteil berichtet und die Anwendbarkeit auf die im Erdbau üblichen, nicht ideal homogenen Mischungen geprüft. Die Analyse stützt sich auf die einaxiale Druckfestigkeit von Probekörpern, die aus Mischungen aus jeweils drei feinkörnigen Böden mit Zement hergestellt wurden. Es wird gezeigt, dass das Verfahren grundsätzlich angewendet werden kann und welche Randbedingungen beachtet werden sollten. Abschließend werden Empfehlungen für die Anwendung des Verfahrens bei der Eignungsprüfung vorgestellt.

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Section: Der Porosity/binder‐index (N/b‐index)unclassified

Prognose der Festigkeitsentwicklung zementbehandelter Böden mit dem Porosity/Binder‐Index

Henzinger¹,

Schömig

2020

Geotechnik

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“…Strength of BC soil treated with lime is more on the dry of optimum due to the existence of the flocculated structure, and also enhancement in the strength is observed with the addition of two other materials such as RHA and lime [5,6]. The addition of industrial and agro-industrial waste such as carbide lime-biomass ash mixture, fly ash and lime mixture along with salts acts as a cementing agent for improving strength of a clayey soil [7][8][9][10][11]. This leads to the development of a large volume of alkali silicates and aluminate hydrated products as opposed to calcium hydrated products.…”

Section: Introductionmentioning

confidence: 99%

Justification of strength properties of microstructural changes in the black cotton soil stabilized with rice husk ash and carbide lime in the presence of sodium salts

Ramesh

Manjunatha²

2020

SN Appl. Sci.

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Black cotton soils exhibit high shrinkage and swelling characteristics due to the variation in moisture content. To overcome this problem, many techniques are adopted, among which is the soil stabilization technique. Rapid industrialization and urbanization lead to the generation of waste products; the major by-products are rice husk ash (RHA) and carbide lime (CL). These by-products show excellent pozzolanic property. In this paper, an attempt has been made to stabilize black cotton soil with rice husk ash (RHA) along with carbide lime (CL) and other additives. Based on strength test results, the optimum dosage of RHA and CL was found to be 20% and 8%, respectively. The effect of sodium salts on index properties and unconfined compression strength (UCC) test at different moulding water contents for immediate testing and at different days of curing are studied. Results show that plasticity index of the soil treated with additives was decreased both for immediate and for 7 days of curing period due to the decrease in diffuse double-layer thickness. Soil-RHA-CL composite treated with 1% sodium chloride and 1% sodium hydroxide improves the Unconfined compression strength and shows a better strength compared to carbide lime-treated soil due to the formation of alkali silicate and alkali aluminate hydrated gel along with other cementitious products. The microstructural changes in the stabilized composite can be observed with XRD and SEM analysis. The addition of carbide lime and salts binds the particle with hydrated gel and shows denser environment compared to unstabilized soil.

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“…Moreover, the major problem that makes soft soil unsuitable to be a foundation soil for construction is its swell-shrink behavior. Soft soil swells when it gains water content and shrinks when water is dried out [5]. Various kinds of cracks induced by excessive settlement may appear on railways, highways and other engineering structures founded on soft soils due to the swell-shrink phenomenon during wet and dry seasons [6,7].…”

Section: Introductionmentioning

confidence: 99%

Compaction and Plasticity Comparative Behaviour of Soft Clay Treated with Coarse and Fine Sizes of Ceramic Tiles

et al. 2018

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Recycled blended ceramic tiles (RBT) is a waste material produced from ceramic tile factories and construction activities. RBT is found to be cost effective, sustainable, environmental-friendly and has the potential to be used as an additive in soft soil stabilization. Recent reports show that massive amounts of RBT are dumped into legal or illegal landfills every year consuming very large spaces and creating major environmental problems. On the other hand, dredged marine clay obtained from Nusajaya, Johor, Malaysia has weak physical and engineering characteristics to be considered as unsuitable soft soil that is usually excavated, dumped into landfills and replaced by stiff soil. Hence, this study investigates the suitability of possible uses of RBT to treat marine clay. Laboratory tests included Standard proctor tests and Atterberg limits tests. The plasticity of marine clay was evaluated by adding 10%, 20%, 30% and 40% of 0.3 mm RBT. In addition, the compaction behaviour of treated marine clay was compared by adding two different sizes (0.3 mm and 1.18 mm diameter) of RBT. For both coarse and fine sizes of RBT, 10%, 20%, 30% and 40% of the dry weight of the soft clay were added. The mixture of each combination was examined in order to evaluate the Maximum Dry Density (MDD) and the optimum moisture content (OMC) for the treated soft clay. MDD and OMC for soft untreated samples were 1.59 Mg/m3 and 22%, respectively. Treated samples with 10%, 20%, 30% and 40% of 0.30 mm size RBT resulted in a significant reduction of OMC ranged from 19 to 15% while MDD resulted in increment ranged from 1.69 to 1.77 Mg/m3. In addition, samples treated with 10%, 20%, 30% and 40% of 1.18 mm size RBT resulted in major reduction of OMC ranged from 15 to 13.5% while MDD increased effectively from 1.75 to 1.82 Mg/m3. For all mix designs of soft clay-RBT, MDD was gradually increasing and OMC was sharply reducing with further increments of both sizes of RBT.

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Chemical stabilization of soft Bangkok clay using the blend of calcium carbide residue and biomass ash

Cited by 92 publications

References 16 publications

Prognose der Festigkeitsentwicklung zementbehandelter Böden mit dem Porosity/Binder‐Index

Prognose der Festigkeitsentwicklung zementbehandelter Böden mit dem Porosity/Binder‐Index

Justification of strength properties of microstructural changes in the black cotton soil stabilized with rice husk ash and carbide lime in the presence of sodium salts

Compaction and Plasticity Comparative Behaviour of Soft Clay Treated with Coarse and Fine Sizes of Ceramic Tiles

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