Circular economy and durability in geopolymers ceramics pieces obtained from glass polishing waste

Azevedo, Afonso Rangel Garcez de; Marvila, Markssuel Teixeira; Oliveira, Leandro Barbosa de; Ferreira, Weslley M.; Colorado, Henry A.; Teixeira, Silvio Rainho; Vieira, Carlos Maurício Fontes

doi:10.1111/ijac.13780

Cited by 72 publications

(15 citation statements)

References 53 publications

(160 reference statements)

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“…The FTIR curves various pharmacological with metakaolin conversion levels ranging from 0% to 20%. In GP mixes containing 0% of NS, the peaks visible at 1300–900 cm −1 are attributable to Si–O–Al symmetrical vibrations [ 97 ].…”

Section: Influences Of Nanomaterials On Fresh and Hardened Properties...mentioning

confidence: 99%

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

et al. 2022

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The main objective of this review is to study some important nanomaterials and their impact on the performance of geopolymer concrete. This paper is an investigation into trends and technology in the development of different nanomaterials to develop higher structural performance geopolymer concrete. The effect of the alkaline to binder and sodium silicate to sodium hydroxide ratio on the performances of geopolymer performances is studied. The relationship between setting time and slump is evaluated through the ternary plot, the variation in compressive strength values is evaluated using the kernel density plot, and the relationship between split tensile and flexural strength is investigated using the scattering interval plot. Regression analysis is carried out among water absorption and bulk-density result values obtained from previous literature. As the molarity and alkaline to binder (A/B) ratios increase, the strength development of geopolymer concrete increases up to a specific limit. The addition of a small quantity of nanomaterials, namely, nano silica, nano alumina, carbon nano tubes, and nano clay, led to the maximum strength development of geopolymer concrete. Incorporating these nanomaterials into the geopolymer significantly refines the structural stability, improving its durability. The various products in GP composites emerging from the incorporation of highly reactive SEM, XRD, and FTIR analysis of nanomaterials reveal that the presence of nanomaterials, which enhances the rate of polymerization, leads to better performance of the geopolymer.

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Section: Influences Of Nanomaterials On Fresh and Hardened Properties...mentioning

confidence: 99%

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

et al. 2022

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“…The partial replacement of cement and other constituents of concrete has already been made extensively by industrial byproducts in various studies [4][5][6][7][8]. Several types of waste materials have been studied for their potential use in building materials, such as marble [9][10][11][12], super-absorbent polymer [13,14], glass [15][16][17], slag [18], bagasse ash [19], rubber [20,21], plastic [22], ceramic [23,24], natural fiber [25][26][27][28], and recycled aggregate [29][30][31][32]. Among these, marble dust, which is produced during cutting processes in mines, has also been used in the production of concrete.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Ultrasonic Pulse Velocity of Concrete Containing Waste Marble Dust and Its Estimation Using Artificial Intelligence

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Researchers and engineers are presently focusing on efficient waste material utilization in the construction sector to reduce waste. Waste marble dust has been added to concrete to minimize pollution and landfills problems. Therefore, marble dust was utilized in concrete, and its prediction was made via an artificial intelligence approach to give an easier way to scholars for sustainable construction. Various blends of concrete having 40 mixes were made as partial substitutes for waste marble dust. The ultrasonic pulse velocity of waste marble dust concrete (WMDC) was compared to a control mix without marble dust. Additionally, this research used standalone (multiple-layer perceptron neural network) and supervised machine learning methods (Bagging, AdaBoost, and Random Forest) to predict the ultrasonic pulse velocity of waste marble dust concrete. The models’ performances were assessed using R2, RMSE, and MAE. Then, the models’ performances were validated using k-fold cross-validation. Furthermore, the effect of raw ingredients and their interactions using SHAP analysis was evaluated. The Random Forest model, with an R2 of 0.98, outperforms the MLPNN, Bagging, and AdaBoost models. Compared to all the other models (individual and ensemble), the Random Forest model with greater R2 and lower error (RMSE, MAE) has a superior performance. SHAP analysis revealed that marble dust content has a positive and direct influence on and relationship to the ultrasonic pulse velocity of concrete. Using machine learning to forecast concrete properties saves time, resources, and effort for scholars in the engineering sector.

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“…It should be noted that these materials are defined as structural materials used in the same applications as OPC concrete [ 50 ]. However, geopolymers are obtained through the geopolymerization reaction between a precursor, usually rich in aluminosilicates, and an alkaline activator solution [ 51 , 52 ]. In the study of these materials, it is necessary to use fine aggregate and coarse aggregate, and C&DW is viable for this function.…”

Section: Current Application Of Canddw In Construction Materialsmentioning

confidence: 99%

Recycled Aggregate: A Viable Solution for Sustainable Concrete Production

et al. 2022

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Construction and demolition activities consume large amounts of natural resources, generating 4.5 bi tons of solid waste/year, called construction and demolition waste (C&DW) and other wastes, such as ceramic, polyethylene terephthalate (PET), glass, and slag. Furthermore, around 32 bi tons of natural aggregate (NA) are extracted annually. In this scenario, replacing NA with recycled aggregate (RA) from C&DW and other wastes can mitigate environmental problems. We review the use of RA for concrete production and draw the main challenges and outlook. RA reduces concrete’s fresh and hardened performance compared to NA, but these reductions are often negligible when the replacement levels are kept up to 30%. Furthermore, we point out efficient strategies to mitigate these performance reductions. Efforts must be spent on improving the efficiency of RA processing and the international standardization of RA.

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Circular economy and durability in geopolymers ceramics pieces obtained from glass polishing waste

Cited by 72 publications

References 53 publications

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

Investigating the Ultrasonic Pulse Velocity of Concrete Containing Waste Marble Dust and Its Estimation Using Artificial Intelligence

Recycled Aggregate: A Viable Solution for Sustainable Concrete Production

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