Early-age structural development of cement blended with flash calcined dredging sediments

Author(s): Céline Van Bunderen (1), Ruben Snellings (2), Lucie Vandewalle (1) and Özlem Cizer
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: 188-195
Total Pages: 8
Language : English

Abstract: Supplementary cementitious materials (SCMs) have been used in Portland cement concrete for decades and many of their effects are already well understood. Recent research on SCMs has focused on exploring new materials, since the existing SCMs will not be able to cover the growing cement demand in future, and understanding the early-age properties of concrete
containing alternative SCMs.
The use of dredging sediments as a novel SCM has received considerable interest in recent years. Dredging activities play an important role in maintaining and improving navigation of ships in ports and waterways, and in Antwerp port, each year about 450.000 tons dry matter dredging material is generated. At the moment, no suitable or feasible applications exist, and the material is simply deposited. After mechanical dewatering and flash calcination, however, the dredging sediments show pozzolanic properties and have a great potential to be used as a novel SCM.
This paper presents the influence of the addition of calcined dredging sediments on the early- age properties of cement paste. Heat development (by means of calorimetry) and ultrasonic pulse velocity (UPV) are determined. It was concluded that the calcined dredging sediments had minor influence on the early age development.

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

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