Manufacture of artificial aggregate using MSWI bottom ash

Cioffi, Raffaele; Colangelo, Francesco; Montagnaro, Fabio; Santoro, L.

doi:10.1016/j.wasman.2010.05.020

Cited by 146 publications

(67 citation statements)

References 18 publications

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“…Because of these facts, more and more scientists have been trying to find new ways in which such ash could be used, e.g., for the development of alkali-activated materials, which are frequently named geopolymers 2,3 , but also for the production of artificial aggregates. [4][5][6][7][8][9][10][11][12][13] Artificial aggregates can be obtained simply by the crushing and grinding of industrial waste if the basic starting material is bulk waste. If, however, the basic starting material is a fine powder, such as fly ash, such aggregate can be produced by several different routes, as follows: 1) by high-temperature procedures, e.g., foaming and/or sintering at elevated temperatures of approx.…”

Section: Introductionmentioning

confidence: 99%

Lightweight aggregates made from fly ash using the cold-bond process and their use in lightweight concrete

Frankovič¹,

Bosiljkov²,

Ducman³

2017

Mater. tehnol.

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Aggregates made from fly ash have been developed by means of the cold-bonding process, with the addition of Portland cement as a binder at (10, 20, and 30) % of mass fractions, and by pouring the mixtures into moulds. After curing for 28 d the samples were processed into aggregate by crushing and sieving. An aggregate containing a weight percentage of 10 % of cement was additionally produced by pelletization on a granulating plate. The density, water-adsorption capacity, porosity, compressive strengths, and frost resistance of the samples were determined. The aggregates prepared by both routes were then used to make concrete samples, whose properties were then compared to those of conventional concrete made using limestone aggregate. The compressive strength of the concrete made with the granulated aggregate reached 16.0 MPa after 28 d, whereas that of the concrete made with crushed aggregate amounted to 24.1 MPa, and that of the conventional concrete was 34.6 MPa. Keywords: fly ash, lightweight aggregates, density, compressive strength, frost resistance Agregati izdelani iz elektrofiltrskega pepela so bili razviti s postopkom hladnega vezanja, z dodatkom (10, 20 in 30) % masnega dele`a Portland cementa kot veziva in z ulivanjem me{anice v modele. Po 28 dnevnem strjevanju vzorcev so bili vzorci predelani v agregat z drobljenjem in sejanjem. Sestava, ki je vsebovala 10 masnih % cementa, je bila {e dodatno peletizirana na plo{~i za granuliranje. Dolo~ene so bile: gostota, kapaciteta absorpcije vode, poroznost, tla~na trdnost in odpornost na zamrzovanje. Sestave, izdelane na oba na}ina, so bile uporabljene za izdelavo betonskih vzorcev, katerih lastnosti so bile primerjane z lastnostmi obi~ajno izdelanega betona z uporabo sestave apnenca. Tla~na trdnost betona, izdelanega z granulirano sestavo, je dosegla 16,0 MPa po 28 dneh, medtem, ko je pri betonu izdelanem iz drobljenega agregata, zna{ala 24,1 MPa, pri obi~ajnem betonu pa je bila 34,6 MPa.

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Section: Introductionmentioning

confidence: 99%

Lightweight aggregates made from fly ash using the cold-bond process and their use in lightweight concrete

Frankovič¹,

Bosiljkov²,

Ducman³

2017

Mater. tehnol.

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“…A number of papers dealing with the experimental characterization of concrete mixtures employing different kinds of recycled aggregates have been published in the last few years [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In fact, Behiry [13] showed that by mixing recycled concrete aggregate (RCA) with traditional limestone aggregate (LSA), the mechanical properties of the mixture can be improved, taking the unconfined compressive strength as a quality indicator.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Thermal and Hygrometric Characteristics of Building Structures Employing Recycled Plastic Aggregates and Geopolymer Concrete

et al. 2013

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Abstract:The correct estimation of building energy consumptions is assuming an always increasing importance, and a detailed reproduction of building structures, with all the single components involved, is necessary to achieve this aim. In addition, the current ecological development tries to limit the use of natural raw materials as building components, in favor of alternative (waste) materials, which ensure significant advantages from the economic, energetic and environmental point of views. In this work, dynamic heat and vapor transport in a typical three-dimensional (3D) building structure, involving different types of environmental-friendly concrete mixtures, have been simulated by using finite elements. In particular, the authors propose to substitute part of the aggregates with plastic waste and to use a fly ash based geopolymeric binder for the production of low conductivity concrete, to be employed in eco-efficient buildings. Concrete produced with natural limestone aggregates has been considered as the reference benchmark. The whole characterization of the different types of concrete tested in the present work has been obtained through laboratory experiments. The structure taken into account in the simulations is a 3D thermal bridge, typical of building envelopes. The thermal and hygrometric transient behavior of this structure, employing plastic waste in different percentages and geopolymer concrete, has been analyzed by the authors.

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“…In this work, an evaluation of the most abundant oxides was also made. The reported results revealed amounts of CaO, SiO 2 Infrared spectroscopy is a useful tool for revealing the formation of geopolymers. In fact, in FT-IR traces of raw silicates and silico-aluminates, the Si-O asymmetric stretching in tetrahedra is responsible for an absorption band centred at about 1000 cm −1 .…”

Section: Mswi-fa Chemical Characterization and Geopolymerizationmentioning

confidence: 78%

Recycling of Pre-Washed Municipal Solid Waste Incinerator Fly Ash in the Manufacturing of Low Temperature Setting Geopolymer Materials

Ferone¹,

Colangelo²,

Messina³

et al. 2017

Waste Management and Valorization

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Abstract:In this work, three samples of municipal solid waste incinerators fly ash (MSWI-FA) have been stabilized in systems containing coal fly ash to create geopolymers through a polycondensation reaction. Monolithic products have been obtained with both MSWI fly ash as received and after the partial removal of chloride and sulfate by water washing. The polycondensation products have been characterized qualitatively by means of Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy and quantitatively, through the determination of the volume of reacted water and silicate. Furthermore, the heavy metals and chloride releases together with the physico-mechanical properties have been evaluated on the hardened products. In conclusion, considering the technological and environmental performances of the obtained geopolymers, they could be suitable for many non-structural applications, such as backfilling of abandoned quarries, decorative materials or brick fireplaces, hearths, patios, etc.

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Manufacture of artificial aggregate using MSWI bottom ash

Cited by 146 publications

References 18 publications

Lightweight aggregates made from fly ash using the cold-bond process and their use in lightweight concrete

Lightweight aggregates made from fly ash using the cold-bond process and their use in lightweight concrete

Experimental and Numerical Analysis of Thermal and Hygrometric Characteristics of Building Structures Employing Recycled Plastic Aggregates and Geopolymer Concrete

Recycling of Pre-Washed Municipal Solid Waste Incinerator Fly Ash in the Manufacturing of Low Temperature Setting Geopolymer Materials

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