This work focuses on the development and on the mechanical characterization of geopolymer composites to be used as sustainable plasters or mortars. The starting point of the work is the synthesis of a geopolymer binder, which is subsequently used for the production of two different mortars: the first one is obtained by simply adding fine aggregates (control mortar), while in the second case, also slaughterhouse wastes (SHW) are included in the admixture. Nowadays, slaughtering industry produces a large amount of biological wastes, that are usually discarded via incineration or landfills. Among SHW, horns and hooves, which are rich in keratin, can be potentially used as additives in the manufacturing process of mortars, both in the form of fibre-reinforcement, as well as fine aggregates and fillers. In the second mortar considered in this work, 2% of SHW fibres and 2% of SHW filler are added in the admixture. The mechanical properties of the three products are experimentally investigated and compared to each other. Apart for compressive strength, close attention is paid to the flexural behaviour and to the determination of fracture energy. To evaluate the effect of SHW addition on crack propagation and width, digital image correlation technique is also adopted.

Fracture energy of sustainable geopolymer composites with and without the addition of slaughterhouse by-products as fibre-reinforcement: An experimental investigation / Michelini, E.; Ferretti, D.; Pagliari, F.; Cerioni, R.; Bergamonti, L.; Potenza, M.; Graiff, C.. - In: PROCEDIA STRUCTURAL INTEGRITY. - ISSN 2452-3216. - 39:(2021), pp. 71-80. ((Intervento presentato al convegno 7th International Conference on Crack Paths, CP 2021 tenutosi a ita nel 2021 [10.1016/j.prostr.2022.03.074].

Fracture energy of sustainable geopolymer composites with and without the addition of slaughterhouse by-products as fibre-reinforcement: An experimental investigation

Michelini E.
;
Ferretti D.;Pagliari F.;Cerioni R.;Bergamonti L.;Potenza M.;Graiff C.
2021

Abstract

This work focuses on the development and on the mechanical characterization of geopolymer composites to be used as sustainable plasters or mortars. The starting point of the work is the synthesis of a geopolymer binder, which is subsequently used for the production of two different mortars: the first one is obtained by simply adding fine aggregates (control mortar), while in the second case, also slaughterhouse wastes (SHW) are included in the admixture. Nowadays, slaughtering industry produces a large amount of biological wastes, that are usually discarded via incineration or landfills. Among SHW, horns and hooves, which are rich in keratin, can be potentially used as additives in the manufacturing process of mortars, both in the form of fibre-reinforcement, as well as fine aggregates and fillers. In the second mortar considered in this work, 2% of SHW fibres and 2% of SHW filler are added in the admixture. The mechanical properties of the three products are experimentally investigated and compared to each other. Apart for compressive strength, close attention is paid to the flexural behaviour and to the determination of fracture energy. To evaluate the effect of SHW addition on crack propagation and width, digital image correlation technique is also adopted.
Fracture energy of sustainable geopolymer composites with and without the addition of slaughterhouse by-products as fibre-reinforcement: An experimental investigation / Michelini, E.; Ferretti, D.; Pagliari, F.; Cerioni, R.; Bergamonti, L.; Potenza, M.; Graiff, C.. - In: PROCEDIA STRUCTURAL INTEGRITY. - ISSN 2452-3216. - 39:(2021), pp. 71-80. ((Intervento presentato al convegno 7th International Conference on Crack Paths, CP 2021 tenutosi a ita nel 2021 [10.1016/j.prostr.2022.03.074].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2924089
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