Effect of compacting pressure and carbonation duration on carbon dioxide activated binders.

Author(s): Pedro Humbert, João Castro Gomes
Paper category: Proceedings
Book title: SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time Vol. 1 & 2
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 425-429
Total Pages: 5
Language : English

Abstract: Alternative binders and hardening reactions are methods to reduce greenhouse gases emissions, energy and water consumption. Waste-based carbon dioxide activated binder represents a potential solution as an environmental friendly construction material. To achieve efficient mechanical properties and optimal mixture design, a preliminary comparison about the effect of compacting pressure and carbonation duration on carbon dioxide activated binders was studied. An electric arc furnace slag from the national steel industry in Portugal and a Portland cement CP-I were used as binders. This work shows the compressive strength development of a slag-based and Portland cement-based binders under different compacting pressures and carbonation durations. Compressive strength present stronger development due higher compacting pressures and longer carbonation duration however, its development ratio was decreasing after two hours under carbon dioxide atmosphere. The carbon dioxide activation has highly dependence on both studied factors, compacting pressure and carbonation duration, which enhance the compressive strength development.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00