Micromechanical characterization of metakaolin-based geopolymers

Pelisser, Fernando; Guerrino, E.L.; Menger, M.; Michél, Milton Domingos; Labrincha, J.A.

doi:10.1016/j.conbuildmat.2013.08.081

Cited by 108 publications

(36 citation statements)

References 27 publications

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“…Investigations concerning the mechanical properties of geopolymers have been extensively considered (Pelisser et al, 2013;Tzanakos et al, 2014), yet studies regarding the production of lightweight/porous geopolymers are rare Papa et al, 2015). In that sense, the possibility of producing lightweight waste based geopolymers assumes particular interest.…”

Section: Introductionmentioning

confidence: 99%

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

et al. 2016

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a b s t r a c tNowadays the stunning volume of generated wastes, the exhaustion of raw materials, and the disturbing greenhouse gases emission levels show that a paradigm shift is mandatory. In this context, the possibility of using wastes instead of virgin raw materials can mitigate the environmental problems related to wastes, while reducing the consumption of the Earth's natural resources. This innovative work reports the incorporation of unexplored waste glass coming from end of life fluorescent lamps into geopolymers.The influence of the waste glass incorporation level, NaOH molarity and curing conditions on the microstructure, physical and mechanical properties of the geopolymers was evaluated. Results demon strate that curing conditions are the most influential factor on the geopolymer characteristics, while the NaOH molarity is less important. Geopolymers containing 37.5% (wt) waste glass were successfully produced, showing compressive strength of 14 MPa (after 28 days of curing), suggesting the possibility of their use in non structural applications.Porous waste based geopolymers for novel applications were also fabricated.

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Section: Introductionmentioning

confidence: 99%

Waste glass from end-of-life fluorescent lamps as raw material in geopolymers

et al. 2016

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“…e final product depends directly on two factors, strictly speaking, the aluminosilicate source and the activator. Besides, the majority of geopolymer authors have examined different types of raw materials in order to produce geopolymer, for instance, metakaolin, fly ash, and blast furnace slag [9][10][11]. Metakaolin was made by controlled calcination.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Characterization of Geopolymer Binders and Foams Made from Tunisian Clay

Messaoud

Hamdi

Srasra³

2018

Advances in Materials Science and Engineering

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Illito-kaolinitic clay rich in hematite from south Tunisia was investigated in view of producing geopolymer materials. Geopolymers with two different densities were elaborated: cement and foam. e effects of activator concentrations on compressive strength, water absorption (durability), open porosity, and bulk density of geopolymers cement were examined, in order to assure optimal geopolymerization conditions. Geopolymer cements aged 28 days with optimum performances were achieved for 13 M of alkaline solution concentration. At these conditions, the compressive strength of prepared geopolymer reaches 27.8 MPa. e addition of silica fume to reactant geopolymer mixture induces modification of geopolymer density and decrease in the compressive strength of the final product. Geopolymer materials based on calcined Tunisian clay can be suggested as sustainable and cost-effective cement that may be applied to alternate Portland cement in many construction applications.

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“…This work builds upon previous research [1,[11][12][13][14][15][16][17][18][19][20][21][22][23][24] that focused on nanomechanical methods for characterizing cementitious materials.…”

Section: Accepted Manuscriptmentioning

confidence: 98%

“…Figure 8. Representative nanoindentation load versus displacement plots for the geopolymer phases compared to existing literature data [17].…”

Section: Accepted Manuscriptmentioning

confidence: 99%