Study on the development of inorganic polymers from red mud and slag system: Application in mortar and lightweight materials

Lemougna, Patrick N.; Wang, Kai-tuo; Tang, Qing; Cui, Xuemin

doi:10.1016/j.conbuildmat.2017.09.015

Cited by 85 publications

(32 citation statements)

References 40 publications

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“…Indeed, for geopolymer or alkali activated systems, an increase of the mechanical properties with the curing temperatures is usually observed until a threshold temperature above which there is no strength-gaining [9,37,38]. This threshold temperature was found in some case around 60-70°C [38,39] for some metakaolin based geopolymers, 30-40°C for fly ash geopolymer-Portland cementitious system [37], 60-90°C for low calcium fly ash and volcanic ashes based geopolymers [9,20,37] and 40°C for slag based alkali activated materials [3]. Beyond this temperature, the time for a better dissolution of aluminosilicates becomes insufficient due to a rapid setting of the geopolymer gel formed at the surface of the undissolved particles [3,40].…”

Section: Setting Time and Compressive Strengthmentioning

confidence: 99%

“…With the need for new infrastructures mainly in developing countries, the global production of cement has reached 4.6 billion tons in 2015 [2]. However, OPC is also a high energy intensive material, with an additional concern related to carbon dioxide (CO2) released during its production, currently accounting for 5-8% of global anthropogenic CO2 [3][4][5]. These concerns have raised the pressure for the development of more environmentally friendly binders.…”

Section: Introductionmentioning

confidence: 99%

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Effect of slag on the improvement of setting time and compressive strength of low reactive volcanic ash geopolymers synthetized at room temperature

Lemougna

Nzeukou

Aziwo

et al. 2020

Materials Chemistry and Physics

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This paper presents an investigation on the effect of ground granulated blast furnace slag on the geopolymerization of low reactive volcanic ash. Volcanic ash was blended up to 50 wt% with slag at 10% intervals. The fresh geopolymer samples were cured at 25 and 60 °C for 3, 7 and 28 days. XRD, FTIR, TG and SEM were used for phases analysis.The results outlined that only 10 wt% of slag was enough to reduce the initial setting time of the geopolymer from more than 7 days to couple of hours (6.7 hours). At 25 °C, the 28 days compressive strength increased with the addition of slag in the system until an optimum value of about 85 MPA. This strength development was suggested to arise from a synergetic formation of C-A-S-H /N-A-S-H gel. At 60 °C, curing for periods longer than 7 days was not beneficial for strength development. These results are of interest for the valorization of low reactive volcanic ashes in the development of structural geopolymers, with related environmental and socioeconomic benefits.

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Section: Setting Time and Compressive Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of slag on the improvement of setting time and compressive strength of low reactive volcanic ash geopolymers synthetized at room temperature

Lemougna

Nzeukou

Aziwo

et al. 2020

Materials Chemistry and Physics

Self Cite

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“…Depending on the replaced percentages, other authors obtained even better results [53,54]. In terms of mechanical compressive, the addition of ground granulated blast furnace slag [55], rice husk ash [56] or fly ash [57] also showed significant improvements.…”

Section: Aluminum Mine Tailings (Red Mud)mentioning

confidence: 99%

The Physical and Mechanical Characteristics of Geopolymers Using Mine Tailings as Precursors

Vizureanu¹,

Burduhos-Nergis²,

Sandu³

et al. 2021

Advances in Geopolymer-Zeolite Composites - Synthesis and Characterization

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Mine tailings are waste materials that resulted from the extraction and processing of raw materials to form mineral products. These dusty particles present negative environmental effects after being deposited in different types of dumping areas. Based on the circular economy concepts and the presently pushing need of identifying wastes as a potential replacement for natural resources, this chapter aims to present the physical (density, microstructure) and mechanical (compressive strength, flexural strength) characteristics of different types of geopolymers which use mine tailings as precursors or blended systems (mixes of different raw materials). The main reasons of approaching this topic are the need to decrease the consumption of natural resources, reduce environmental pollution and create an economic system aimed to capitalize the mining wastes. Accordingly, this chapter includes information regarding the availability of this waste and its potential utilization as a raw material in civil engineering applications. Therefore, reports of specific agencies and multiple research studies which approach tailing based geopolymers or blended systems have been summarized.

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“…121 In addition, an increase in the RM percentage in composites can perform equivalent to the mortar applicable for pavement applications. 123,124…”

Section: Structural Applicationsmentioning

confidence: 99%

A critical review on tribological properties, thermal behavior, and different applications of industrial waste reinforcement for composites

Gangwar

Pathak

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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Industrial wastes such as marble dust, fly ash, and red mud have progressed as an environmental hazard that needs to be disposed or utilized for minimizing the ecological pollution problems and manufacturing costs. Over the years, there is an increasing interest among researchers in utilizing these industrial wastes as reinforcement for developing economic and lightweight monolithic or hybrid composites. In the same context, this paper presents a comprehensive review on the aspects of tribology and thermal performance of industrial waste such as marble dust, fly ash, and red mud as reinforcement for different monolithic and hybrid composites. The review also describes different applications for industrial waste material reinforced composites. Finally, the paper concludes with authors’ perspective of the review, conclusion summary, and future potential of industrial waste filled composites in different industries for obtaining a sustainable and cleaner environment.

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Study on the development of inorganic polymers from red mud and slag system: Application in mortar and lightweight materials

Cited by 85 publications

References 40 publications

Effect of slag on the improvement of setting time and compressive strength of low reactive volcanic ash geopolymers synthetized at room temperature

Effect of slag on the improvement of setting time and compressive strength of low reactive volcanic ash geopolymers synthetized at room temperature

The Physical and Mechanical Characteristics of Geopolymers Using Mine Tailings as Precursors

A critical review on tribological properties, thermal behavior, and different applications of industrial waste reinforcement for composites

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