Properties of developed synthetic lightweight aggregate (composite) based on hydraulic binders and waste

• Autorzy: Głodniok Marcin , Korol Jerzy , Zawartka Paweł
• Języki publikacji: EN

Abstrakty

EN

Lightweight aggregates developed on the basis of hydraulic binders and mining waste were investigated in the study. Original technology was utilized to obtain the aggregates. The synthetic aggregate materials obtained in the work satisfy the basic requirements for materials used in construction. Granulates were obtained by granulating raw materials with a counter-current high intensity mixer having a nominal capacity of 30 litres. A rotary tube furnace was selected as the most appropriate to sinter the produced granulates. The proces combined two operations: burning the combustible fractions (sewage sludge) responsible for porosity, and sintering (consolidating) the granulate. The sintering process was conducted at the temperature of 950°C in the presence of air. The working reactor tilt was about 2°. Initially the rotational speed for the quick tests was 4.28 rpm, which yielded a granule residence time of about 7.3 minutes in the heating zone (a variant was applied for the tests). The obtained aggregates were subjected to strength testing, and their crushing resistance was determined based on standard PN-EN 13055-1. Depending on the proportions of the individual raw materials, the aggregates are characterised by high crushing resistance from 4.1 to 6.5 MPa, which confirms the potential for their industrial application. These aggregates may be used for purposes such as lightweight building and pavement concrete production due to their relatively low bulk density.

Słowa kluczowe

EN

sewage sludge; synthetic lightweight aggregate; granulates

PL

osad ściekowy; syntetyczne lekkie kruszywa; granulaty

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2022
• Tom: R. 22, nr 4
• Strony: 191--195
• Opis fizyczny: Bibliogr.6 poz., rys., tab.

Twórcy

autor

Głodniok Marcin

• Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland

autor

Korol Jerzy

• Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland

autor

Zawartka Paweł

• Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland

Bibliografia

• [1] Chi J.M., Huang R., Yang C.C., Chang J.J., Effect of aggregate properties on the strength and stiffness of lightweight concrete, Cem. Concr. Compos. 2003, 25(2), 197-205.
• [2] Fang W., Special issue on market development and investment strategies in Asia: Guest Editor’s Introduction, Emerg. Mark. Financ. Trade. 2010, 46(1), 4-5.
• [3] Korol J., Hejna A., Głodniok M., Bondaruk J., Manufacturing of lightweight aggregates as an auspicious method of sewage sludge utilization materials, Materials 2020, 13, 5635, DOI: 10.3390/ma13245635.
• [4] Thamer A., et al., 2022 IOP Conf. Ser.: Earth Environ. Sci. 961 012027.
• [5] Bejan G. et al., Lightweight concreto with waste – review, Proc. Manufac. 2020, 46, 136-143.
• [6] Głodniok M., Zgórska A., Zawartka P., Sposób stabilizacji przemysłowych odpadów z grupy niebezpiecznych, Patent nr 238116, Polski Urząd Patentowy.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).