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Macro- and micro-structure evaluations of recycled post-consumer glass cementitious material for concrete

Author(s): Marija Krstic, Julio F. Davalos
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: 261-266
Total Pages: 6
Language : English

Abstract: Concrete is the most used material in the world, second only to water. The production of cement is energy intensive and has raised significant environmental concerns since one ton of cement produces an equal ton of CO2. In the USA, about 90 million tons of cement are used annually, with three million tons used in New York. The concrete industry is facing critical challenges with availability of essential Supplementary Cementitious Materials (SCMs), which are commonly used to partially replace cement for the production of concrete mixes. Recently and particularly in the Northeastern USA, there is a scarcity of fly-ash —as most widely used SCM in concrete . Recycled mixed-color post-consumer glass has a good potential to become one of the leading SCMs for concrete. With the goal of contributing to the implementation of sustainable concrete, this paper focuses on the development and characterization of mix designs with different percentages of cement replacement by a new SCM from recycled post-consumer glass, known commercially as Pozzotive. Concrete formulations with Pozzotive were evaluated at macro- and micro-level, showcasing significant strength and durability performances. This research has been successfully applied in field projects for sidewalk and high-rise building constructions and is contributing to the development of ASTM standard specifications for Glass-SCM.

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

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