Autogenous deformation of paste containing calcined clay-rich dredging sediments as SCM

Author(s): Van Bunderen Céline, Snellings Ruben, Horckmans Liesbeth, Vandewalle Lucie, Cizer Özlem
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-199-5
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 215-220
Total Pages: 6
Language : English

Abstract: Dredging activities play an important role in maintaining and improving navigation in ports and harbours. In Antwerp port, Belgium, each year about 450.000 tons dry matter dredging material is generated and suitable applications are required. After a mechanical dewatering and flash calcination, the dredging sediments show pozzolanic properties and therefore have great potential to be used as novel supplementary cementitious material (SCM). This paper aims to assess the influence of the calcined dredging sediments on the autogenous deformation. The results indicate that the dredging sediments act as an SCM that typically decreases autogenous shrinkage and so reduces the cracking risk of concrete at early age, hereby improving concrete durability.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00