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Ultra-rapid hardening of cement by accelerated carbonation – Past, present and future

Ultra-rapid hardening of cement by accelerated carbonation – Past, present and future

Maries, Alan and Hills, Colin (2015) Ultra-rapid hardening of cement by accelerated carbonation – Past, present and future. In: 5th International Conference on Accelerated Carbonation for Environmental and Material Engineering 2015 (ACEME). AIChE, New York, pp. 274-283. ISBN 978-1-5108-1549-0

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Abstract

The ancient Greeks and Egyptians may have unwittingly employed accelerated carbonation with the polishing technique that they used to achieve seamless crack-free linings in lime-based pipe and stucco work. However, it was not until the advent of Portland cement in the mid-19th century that carbonation with gaseous CO2at atmospheric pressure was proposed as a means of accelerating the setting and hardening of mortar and concrete.

In the 1970s the first attempts were made to achieve a more thorough scientific understanding of the process, most notably in the USA by Berger and colleagues, but also by researchers in the USSR, Israel and Sweden.

The authors’ own development of a carbonation process to accelerate the hardening of precast concrete dates from over 30 years ago, when lowering atmospheric emissions of CO2 by sequestration was not yet an issue. But today, with global cement production increasing relentlessly at around 8% per annum to a current total of 4 Gtonnes and releasing a similar mass of CO2, emission reduction is now a pressing concern in the cement and concrete sector.

This paper will report on current commercial operations involving accelerated carbonation of concrete and will look forward to challenges and opportunities in a low-carbon future.

Item Type: Conference Proceedings
Title of Proceedings: 5th International Conference on Accelerated Carbonation for Environmental and Material Engineering 2015 (ACEME)
Additional Information: Conference held at New York, USA on 21-24 June 2015.
Uncontrolled Keywords: Carbon dioxide; CO2; Accelerated carbonation; Concrete; History
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Engineering Science
Related URLs:
Last Modified: 31 Jan 2017 10:02
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/14510

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