Carbon Dioxide Absorption by Blast-Furnace Slag Mortars in Function of the Curing Intensity

Miguel Ángel Sanjuán,Cristina Argiz,Esteban Estévez

doi:10.3390/en12122346

Miguel Ángel Sanjuán, Cristina Argiz + Show 1 more

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https://doi.org/10.3390/en12122346

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Journal: Energies	Publication Date: Jun 19, 2019
Citations: 24	License type: CC BY 4.0

Affiliation: Universidad Politécnica de Madrid

Abstract

Climate change is one of the most important issues affecting the future of the planet. Then, a lot of resources are being used to actively work on climate change issues and greenhouse gas reduction. Greenhouse gas (GHG) emissions are monitored by each country and reported yearly to the United Nations Framework Convention on Climate Change (UNFCCC). The Intergovernmental Panel on Climate Change (IPCC) published the document entitled “2006 IPCC Guidelines for National Greenhouse Gas Inventories” to provide the calculation rules and the way to inform the UNFCCC of the national GHG emissions. Currently, this document does not give a procedure to calculate the net carbon dioxide emissions to the atmosphere due to the Portland cement clinker production. The purpose of this paper is to get reliable relationships to better calculate the CO2 uptake by ground granulated blast-furnace slag (GGBFS) mortars. The application of this material cured under controlled conditions could help minimize environmental impact. Carbonation coefficient versus 28-day compressive strength relationship of mortars elaborated with GGBFS and cured underwater for 0, 1, 3, 7, 14, or 28 days were obtained. The main finding is the extreme sensitivity of the GGBFS mortars to the curing intensity and, therefore, they can be used cured under controlled conditions to minimize carbon footprints.

Highlights

Climate change threat is promoting the development of new technologies on greenhouse gas (GHG) emissions
In order to assess the annual amount of GHG emissions in the world, they are monitored at national level and reported to the United Nations Framework Convention on Climate Change (UNFCCC) according to The Intergovernmental Panel on Climate Change (IPCC) rules published in the “2006 IPCC Guidelines for National Greenhouse Gas Inventories” [4]
With regard to the Portland cement clinker production, such guidelines do not include an accurate procedure to calculate the net carbon dioxide emissions to the atmosphere, i.e., carbon dioxide is formed by the Portland cement clinker production [5], and, carbon dioxide is partly uptaken by the Portland cement-based materials by means of the well-known carbonation chemical process [6]

Summary

Introduction

Climate change threat is promoting the development of new technologies on greenhouse gas (GHG) emissions. Carbon dioxide utilization is diverse [1,2] and new technologies must be promoted to be implemented successfully. New composite materials designed to be carbonated has a great potential for CO2 uptake, for instance, by using new additions, providing a denser final material [3]. In order to assess the annual amount of GHG emissions in the world, they are monitored at national level and reported to the United Nations Framework Convention on Climate Change (UNFCCC) according to The Intergovernmental Panel on Climate Change (IPCC) rules published in the “2006 IPCC Guidelines for National Greenhouse Gas Inventories” [4]. With regard to the Portland cement clinker production, such guidelines do not include an accurate procedure to calculate the net carbon dioxide emissions to the atmosphere, i.e., carbon dioxide is formed by the Portland cement clinker production [5], and, carbon dioxide is partly uptaken by the Portland cement-based materials by means of the well-known carbonation chemical process [6].

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