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The use of different by-products in the production of lightweight alkali activated building materialsDembovska, Laura ...This paper investigates the value of different industrial by-products and residues in the production of lightweight alkali activated materials (AAM). Waste metakaolin, recycled waste glass, aluminium ... scrap recycling waste, and steel-plant waste (SPW) were considered as secondary raw materials. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray micro-tomography examinations were performed in order to analyse the reaction products, to identify their phase composition, and to observe the micromorphology. The results showed that highly porous lightweight building materials could be obtained, with densities ranging from 380 to 470 kg/m3, heat conductivities ranging between 0.14 and 0.15 W/m%K, and compressive strengths ranging between 1.1 and 2.0 MPa. It was also shown that the main hydration products were amorphous aluminosilicate gels, whereas the crystalline compounds from the SPW remained in the structure of the AAM. The results of X-ray micro-tomography showed that lightweight AAM contained 72.0%89.0 vol% of pores, with sizes ranging between 1 and 5 mm. In the paper a brief description is given of the waste management method which can be applied to obtain materials that can be used in the building industry as lightweight load-bearing insulation materials.Source: Construction & building materials. - ISSN 0950-0618 (Vol. 135, Mar. 2017, str. 315-322)Type of material - article, component part ; adult, seriousPublish date - 2017Language - englishCOBISS.SI-ID - 2265447
Author
Dembovska, Laura |
Bajare, Diana |
Ducman, Vilma |
Korat, Lidija, 1986- |
Bumanis, Girts
Topics
waste |
geopolymers |
mechanical properties |
odpadki |
geopolimeri |
mehanske lastnosti
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Dembovska, Laura | ![]() |
Bajare, Diana | ![]() |
Ducman, Vilma | 11292 |
Korat, Lidija, 1986- | 33198 |
Bumanis, Girts | ![]() |
Source: Personal bibliographies
and: SICRIS
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