Properties of Ordinary Portland Cement Clinker with municipal solid waste in- cineration bottom ash as raw meal additive

Author(s): Aneeta M. Joseph, Stijn Matthys and Nele De Belie
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 424-429
Total Pages: 6
Language : English

Abstract: Around 1.3 billion tonnes of municipal solid wastes are generated all around the world and out of that around 10% is incinerated generating a vast amount of incineration residues [1]. In Belgium, around 400 kilo tonnes of bottom ash is generated, out of which only 102kT is utilised, mainly as aggregate and road subbase material. Environmental stipulations prevent utilisation of 0-2mm fraction due to exceedance of the leachability of Cu. Therefore this fraction cannot yet be reused. However, due to the mineral transformation in the cement kiln, by using as part of the cement raw meal, limited amounts of Cu can be incorporated into C3S and C4AF phases, and after cement hydration, can be bound in C-S-H phases. Also the chemical composition of bottom ash makes it suitable to be used in raw mix for clinker production. In this study, a clinker was produced with 5% bottom ash as an additive in the raw meal and was characterised for its mineralogy. The early age hydration kinetics were studied using isothermal calorimetry. These measurements show that the properties of clinker with bottom ash as part of the raw meal has comparable properties with that of conventional clinker.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00