Eggshell Produced Limes: Innovative Materials for Soil Stabilization

Consoli, Nilo César; Lotero, Andres; Saldanha, Rodrigo Beck; Filho, Hugo Carlos Scheuermann; Acosta, Cindy Johanna Moncaleano

doi:10.1061/(asce)mt.1943-5533.0003418

Cited by 34 publications

(8 citation statements)

References 18 publications

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“…The hydrated ESL presents 72.90% of calcium oxide and minerals in the form of portlandite (Ca(OH) 2 ), calcite (CaCO 3 ), and magnesium peroxide (MgO 2 ) 21 . The CL is in its majority composed of 45.9% CaO and 23.6% MgO; constituted by portlandite, calcite, and magnesium-based minerals 3 .…”

Section: Methodsmentioning

confidence: 99%

“…The CL is in its majority composed of 45.9% CaO and 23.6% MgO; constituted by portlandite, calcite, and magnesium-based minerals 3 . Additional information regarding hydrated ESL and CL properties can be found in Consoli et al 21 and Araújo et al 3 , respectively.…”

Section: Methodsmentioning

confidence: 99%

“…In this context, many studies have evaluated the use of eggshell waste as an alternative calcium source for different geotechnical and civil construction applications 3 , 16 – 20 . Furthermore, studies observed that eggshell lime (ESL) presents itself as an excellent material for soil stabilization along with a pozzolanic source, such as RHA, and a more sustainable binder than dolomitic lime because it avoids limestone mineral extraction and improvement 4 , 20 , 21 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental investigation of binder based on rice husk ash and eggshell lime on soil stabilization under acidic attack

Reis

Pelisser

Levandoski

et al. 2022

Sci Rep

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This study evaluates the use of rice husk ash (RHA)-eggshell lime (ESL) and RHA-commercial lime (CL) as alternative binders for clayey soil stabilization, as well as the performance of soil-binder mixtures under acidic attack. A central composite design was carried out to analyze the reactivity by batch tests with a sulfuric acid solution. Physical and mechanical behavior was evaluated by compaction test and unconfined compressive strength (UCS). Reactivity tests demonstrated better neutralization of contaminant acidity for mixtures with ESL. The highest compressive strength, reactivity and partial encapsulation of toxic elements are associated with application of 30% RHA and 6% ESL in the soil. A C–S–H gel is observed in poorly crystalline phases through the XRD pattern. The application of RHA-ESL in soils exposed to acidic attack has environmental feasibility. Analysis of RHA grinding processes combined with the mixture strength over time, and its application tests in impermeable barriers, in landfills, are recommended.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental investigation of binder based on rice husk ash and eggshell lime on soil stabilization under acidic attack

Reis

Pelisser

Levandoski

et al. 2022

Sci Rep

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“…Similar to the TGA-DTA analysis of QWF, this result is important since this further confirms the mineral composition of ESP. This material therefore needs to be calcined to produce CaO (also known as eggshell lime) and enhance its chemical properties [37,70,71]. C due to the degradation of organic materials.…”

Section: Thermogravimetric Analysis and Differential Thermal Analysis...mentioning

confidence: 99%

Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

Saldia,

Bacosa,

Vegafria

et al. 2024

Sustainability

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Quarry waste fines and eggshells are unavoidable wastes which relentlessly contribute to environmental loads and pollution. Although many studies have suggested various methods for recycling, these wastes remain underutilized due to some technical constraints. In addition, no study has yet explored the possibility of combining quarry waste fines (QWF) and eggshell powder (ESP) for tobermorite synthesis. Tobermorite is the main component which primarily provides strength to autoclaved aerated concrete products. With this in mind, this study seeks to evaluate the potential of QWF-ESP mix at 10%, 15%, and 20% amounts of cement, respectively. The XRF, XRD, and TGA–DTA techniques were used to characterize the waste materials, while physical and mechanical property tests and XRD analysis were performed on the autoclaved samples. It was found that QWF contains 53.77% SiO2 and ESP contains 97.8% CaO which are key components for tobermorite synthesis. This study also revealed that the mixture with only 10% cement has the highest compressive strength among the QWF-ESP samples. Furthermore, the formation of tobermorite in the samples was confirmed through XRD analysis. Hence, the hydrothermal curing of QWF-ESP can be further developed to produce functional tobermorite-bearing materials.

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“…The calcium oxide present in lime (CaO) is the main factor responsible for the activation of GBFS [13]. The eggshell lime is rich with this compound (CaO) and can potentially replace limestone for calcic lime production [16,17].…”

Section: Introductionmentioning

confidence: 99%

Development of Eco-Friendly Mortars Produced with Blast Furnace Slag, Calcined Eggshell and Brick Waste: Mechanical Behavior and Microstructure Assessment

Boukour¹,

Bouteldja²,

Bensaifi³

2022

ACSM

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The granulated blast furnace slag exhibits pozzolanic reactivity when combined with appropriate activator and can be used in a wide range as cement replacement. The aim of this study is to investigate the effect on the mechanical and microstructure properties of incorporating admixture composed by granulated blast furnace slag (GBFS), calcined eggshell (CES), and brick waste (BW), as replacement of cement in the formulation of mortar. Ten different mixes of mortar prismatic specimens were tested with different replacement levels of raw materials (50, 75, and 100%). The results show that the increase in the proportion of raw materials decreases significantly drying shrinkage, dry unit weight and strengths of mixtures mortar compared to control mortar at early age. The decrease in strengths is less important in the long term due the development of pozzolanic reaction. Moreover, the water absorption and open porosity were increased for all cases. The microscopic analysis by Scanning Electron Microscopy (SEM) shows that the proportion of 15% of calcined eggshell powder in admixture, provides more Calcium Silicate Hydrate gel (C-S-H) in the internal cementitious matrix of the mortar, which explains the best mechanical strength provided by this mixture.

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Eggshell Produced Limes: Innovative Materials for Soil Stabilization

Cited by 34 publications

References 18 publications

Experimental investigation of binder based on rice husk ash and eggshell lime on soil stabilization under acidic attack

Experimental investigation of binder based on rice husk ash and eggshell lime on soil stabilization under acidic attack

Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

Development of Eco-Friendly Mortars Produced with Blast Furnace Slag, Calcined Eggshell and Brick Waste: Mechanical Behavior and Microstructure Assessment

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