Analysis of experimental data of environmental cement prepared by fly ash of eggs shell and sand dune for reduction of carbon dioxid

Brahimi, Abdelghani; Meghachou, Mourad; Abbad, Hichem; Rahmouni, Abdelkader; Belbachir, Mohammed; Zeggai, Fatima Zohra; Bachari, Khaldoun

doi:10.1016/j.dib.2020.105407

Cited by 9 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thanks to the microscopic observation, several different morphologies of the samples were observed: some are elongated, rounded, and angular; porous; and crystal needles appear. Based on the literature data, cementitious materials for the production of which fly ash and eggshell ash are used show better performance than ordinary cement in terms of water penetration, fire resistance, and influence the minimization of carbon dioxide production (CO 2 ), and we assume that our tested material is the same [29]. The internal structure, pore distribution, and composition of the modified sample size changed with the increasing amount of eggshell ash.…”

Section: Discussionmentioning

confidence: 99%

Structural Characterization of Geopolymers with the Addition of Eggshell Ash

et al. 2023

View full text Add to dashboard Cite

It is well known that geopolymers are a new group of binder materials of alumosilicate origin. Geopolymers are made by the reaction of precursor aluminosilicate materials with alkaline activator solutions. The current research relates to a low-cost and eco-friendly procedure, suitable of being implemented in two easy steps. The first step is the production of a solid phase based on fly ash (Obrenovac, Serbia) and eggshell ash as waste materials rich in calcium. The second step is alkali activating the solid phase using an alkaline activator (a mixture of NaOH and Na2SiO3) and procedures in proper laboratory conditions. Four samples with different eggshell ash content were synthesized. The concentration of used NaOH was 12 mol dm−3. The structural properties of all investigated samples were analyzed by XRD (X-ray diffraction), DRIFT (diffuse reflectance infrared Fourier transform), SEM (scanning electron microscopy) and UV/Vis spectroscopy analysis. XRD determined the amorphous halo with the presence of quartz as the crystal phase in all of the investigated samples. These results were confirmed by DRIFT analysis. The morphology of the samples was determined by SEM analysis. UV/Vis showed that the material could be a potential adsorbent.

show abstract

Section: Discussionmentioning

confidence: 99%

Structural Characterization of Geopolymers with the Addition of Eggshell Ash

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In recent years, limited studies have assessed the effect of dune sand on the fresh and hardened properties of geopolymer mortar [23][24][25][26]. Brahimi et al [27] showed that the coupled effect of using dune sand rich in silica and fly ash rich in calcium could achieve synthesized geopolymers having 49.7 MPa of compressive strength. Similarly, Rashad et al [23] found that blast furnace slag (BFS) substitution by up to 30% quartz powder led to enhanced compressive strength, after which a gradual drop in the strength was noted.…”

Section: Introductionmentioning

confidence: 99%

Development and Optimization of Geopolymers Made with Desert Dune Sand and Blast Furnace Slag

et al. 2022

View full text Add to dashboard Cite

This study assesses the effect of mix design parameters on the fresh and hardened properties, cost, and carbon footprint of geopolymer mortar made with desert dune fines (DDF) and blast furnace slag (BFS). Taguchi method was employed in designing the experiments. Four factors were considered, each having three levels, leading to a total of nine geopolymer mortar mixes. The factors comprised the DDF replacement percentage, alkali-activator solution to binder ratio (AAS/B), sodium silicate-to-sodium hydroxide ratio (SS/SH), and sodium hydroxide (SH) molarity. Ten performance criteria were evaluated, including the flowability, final setting time, hardened density, 1, 7, and 28-day compressive strengths, water absorption, sorptivity, cost, and carbon footprint. ANOVA was carried out to estimate the contribution of each factor towards the response criteria. Further, TOPSIS analysis was utilized to optimize the mixture proportions of DDF-BFS blended geopolymer mortar. Experimental results showed that up to 25% DDF replacement enhanced the density, strength, and durability of the geopolymers with minor impact on the flowability and setting time. Higher replacement percentages had a detrimental impact on the performance but could still be utilized in specific mortar construction applications. The other factors had more limited contributions to the performance, evidenced by the ANOVA. TOPSIS method revealed the optimum mix to be made with DDF replacement of 25%, AAS/B of 0.5, SS/SH of 1.5, and SH molarity of 10 M. Different multivariable regression models were also developed to predict the fresh and hardened properties of the DDF-BFS geopolymer mortars using the mix design parameters.

show abstract

Optimum mix design for quarry waste-based masonry blocks with alkali-activated rice husk ash and eggshell ash as a binder

Sathiparan

2024

Multiscale and Multidiscip. Model. Exp. and Des.

View full text Add to dashboard Cite

show abstract

Analysis of experimental data of environmental cement prepared by fly ash of eggs shell and sand dune for reduction of carbon dioxid

Cited by 9 publications

References 8 publications

Structural Characterization of Geopolymers with the Addition of Eggshell Ash

Structural Characterization of Geopolymers with the Addition of Eggshell Ash

Development and Optimization of Geopolymers Made with Desert Dune Sand and Blast Furnace Slag

Optimum mix design for quarry waste-based masonry blocks with alkali-activated rice husk ash and eggshell ash as a binder

Contact Info

Product

Resources

About