Carbonation treatment of eggshell powder concrete for performance enhancement

Xuan, Mei-Yu; Lin, Run-Sheng; Min, Tae-Beom; Wang, Xiaoyong

doi:10.1016/j.conbuildmat.2023.130814

Cited by 14 publications

(2 citation statements)

References 54 publications

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“…A feed-forward neural network [46,48] operates by sequentially processing input data in a forward direction through its layers and neurons without forming cycles in connections. It comprises one input layer, one or more hidden layers, and one output layer.…”

Section: Figure 2 Scanning Electron Microscopy (Sem) Of Eggshell At D...mentioning

confidence: 99%

Soft computing techniques for analysing the mechanical properties of egg shell powder-based concrete

Sharma,

Kumar,

Bano

et al. 2024

ACAE

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The construction industry is increasingly focused on sustainability to reduce environmental impact. Researchers are actively exploring alternative materials to replace clinker-based binders. This study specifically investigates the use of eggshell powder (ESP) as a sustainable substitute in construction. Portland slag cement (PSC) is partially replaced by ESP in concrete production for this purpose. To assess the effectiveness of ESP in enhancing binder properties, the study analyses experimental data for compressive and flexural strength. Artificial Neural Network (ANN) modelling is employed for this analysis to predict material performance. The model undergoes training and testing using input data to ensure accuracy and reliability. The success of the study is demonstrated by high R2 values, with 0,9915 for compressive strength and 0,9921 for flexural strength, indicating that the ANN model closely matches actual material performance. Additionally, error analysis confirms the model's remarkable accuracy in predicting real-world results. Furthermore, the research highlights the exceptional potential of the developed ANN model, which can effectively predict the mechanical properties of construction materials containing ESP.

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Section: Figure 2 Scanning Electron Microscopy (Sem) Of Eggshell At D...mentioning

confidence: 99%

Soft computing techniques for analysing the mechanical properties of egg shell powder-based concrete

Sharma,

Kumar,

Bano

et al. 2024

ACAE

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“…Hu et al [18] found that the addition of polypropylene fibers enhanced the CO 2 uptake of cement-based materials subjected to the CO 2 -curing process. According to Xuan et al [19], the use of eggshell powder added to the Portland cement under carbonation-curing conditions improved the mechanical characteristics and durability of the cement-based materials. Furthermore, Wang and Wang [20] reported that the use of biochar with LC3 binders could enhance the environmental benefits of Portland cement.…”

Section: General Background On the Carbonation As A Stage In The Deca...mentioning

confidence: 99%

Carbon Dioxide Uptake by Brazilian Cement-Based Materials

da Silva Rego,

Sanjuán,

Mora

et al. 2023

Applied Sciences

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The worldwide cement industry plays an important role in addressing the climate change challenge. Brazil’s cement industry currently has 91 cement plants with an installed production capacity of 94 million tons per year and has started to calculate the net CO2 emissions to achieve a carbon-neutral cement sector by 2050. Accordingly, the carbon dioxide uptake due to mortar and concrete carbonation is subtracted from the carbon dioxide emitted by the chemical reaction for the calcination of lime, i.e., the calcination process performed during clinker production. Now-adays, the Intergovernmental Panel on Climate Change (IPCC) Guidelines for National Greenhouse Gas (GHG) Inventories to report the GHG emissions do not include any calculation procedure to consider the mortar and concrete carbonation. However, the Intergovernmental Panel on Climate Change (IPCC)’s Sixth Assessment Report (AR6) recognizes the physico-chemical process known as carbonation. Brazilian net carbon dioxide emissions of cements produced from 1990 to 2019 are estimated considering the carbon dioxide uptake during the service-life and end-of-life and secondary usage stages (Tier 1). This is a fundamental scientific and technological novelty that changes the current approach to estimate the carbon dioxide emissions due to the Portland cement clinker production. Even considering the relative novelty of this approach, it should be promoted in the future and included in the national inventory report (NIR). The carbon dioxide uptake by mortar and concrete carbonation for 30 years is about 140 million tons. Within this thirty-year period about 483 million tons have been released due to the calcination process.

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