Vol.24, No.3, 2024, pp. 283–291
 https://doi.org/10.69644/ivk-2024-03-0283

BIO-WASTE-BASED CEMENT FOR SUSTAINABLE CIVIL ENGINEERING PRACTICE

Anja Terzić1*, Suzana Filipović2, Nevenka Mijatović1, Nina Obradović2,

William G. Fahrenholtz3, Ksenija Janković1, Dragan Bojović1

1) Institute for Testing of Materials, Belgrade, SERBIA

A. Terzić 0000-0002-4762-7404; N. Mijatović 0000-0002-1751-6498;

K. Janković 0000-0003-3744-3799; D. Bojović 0000-0002-4900-6177 

2) Institute of Technical Sciences of the SASA, Belgrade, SERBIA

S. Filipović 0000-0001-6383-8327; N. Obradović 0000-0002-7993-293X

3) Missouri University of Science and Technology, Parker Hall, Rolla, MO, USA

W.G. Fahrenholtz 0000-0002-8497-0092

*email: anja.terzic@institutims.rs

 

Abstract

Industrial byproducts are being increasingly used as raw materials in the cement clinker production. This can help to address the issue of huge amounts of eggshell waste that are discarded into the environment. This bio-waste has a trigonal-calcite structure and similar behaviour as limestone. In this study, cement clinker is synthesized at 1300 °C using eggshell waste in place of limestone. The raw materials are mechanically activated in a high-energy mill. The sintering kinetics are calculated using the results of differential thermal analysis. Mechanical activation modified the spatial distribution of Al, Si, Ca, and Fe, thereby improving the reactivity which in turn decreased the sintering temperature of the clinker. The study demonstrated that eggshell waste is a suitable replacement for limestone in the production of ordinary Portland cement.

Keywords: eggshell waste, mechanical activation, thermal treatment, microscopy, building materials

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