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Calculating CO2 Uptake for Existing Concrete Structures during and after Service Life

Andersson, Ronny LU ; Fridh, Katja LU ; Stripple, Håkan and Häglund, Martin LU (2013) In Environmental Science & Technology 47(20). p.11625-11633
Abstract
This paper presents a model that can calculate the uptake of CO2 in all existing concrete structures, including its uptake after service life. This is important for the calculation of the total CO2 uptake in the society and its time dependence. The model uses the well-documented cement use and knowledge of how the investments are distributed throughout the building sector to estimate the stock of concrete applications in a country. The depth of carbonation of these applications is estimated using two models, one theoretical and one based on field measurements. The maximum theoretical uptake potential is defined as the amount of CO2 that is emitted during calcination at the production of Portland cement, but the model can also, with some... (More)
This paper presents a model that can calculate the uptake of CO2 in all existing concrete structures, including its uptake after service life. This is important for the calculation of the total CO2 uptake in the society and its time dependence. The model uses the well-documented cement use and knowledge of how the investments are distributed throughout the building sector to estimate the stock of concrete applications in a country. The depth of carbonation of these applications is estimated using two models, one theoretical and one based on field measurements. The maximum theoretical uptake potential is defined as the amount of CO2 that is emitted during calcination at the production of Portland cement, but the model can also, with some adjustments, be used for the other cement types. The model has been applied on data from Sweden and the results show a CO2 uptake in 2011 in all existing structures of about 300 000 tonnes, which corresponds to about 17% of the total emissions (calcination and fuel) from the production of new cement for use in Sweden in the same year. The study also shows that in the years 2030 and 2050, an increase in the uptake in crushed concrete, from 12 000 tonnes today to 200 000 and 500 000 tonnes of CO2, respectively, could be possible if the waste handling is redesigned. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Environmental Science & Technology
volume
47
issue
20
pages
11625 - 11633
publisher
The American Chemical Society
external identifiers
  • wos:000326123600034
  • scopus:84886878181
ISSN
1520-5851
DOI
10.1021/es401775w
language
English
LU publication?
yes
id
3371e4e3-fb49-4d39-943c-9fb7b083070d (old id 4174182)
date added to LUP
2013-11-22 14:25:46
date last changed
2019-04-23 01:38:42
@article{3371e4e3-fb49-4d39-943c-9fb7b083070d,
  abstract     = {This paper presents a model that can calculate the uptake of CO2 in all existing concrete structures, including its uptake after service life. This is important for the calculation of the total CO2 uptake in the society and its time dependence. The model uses the well-documented cement use and knowledge of how the investments are distributed throughout the building sector to estimate the stock of concrete applications in a country. The depth of carbonation of these applications is estimated using two models, one theoretical and one based on field measurements. The maximum theoretical uptake potential is defined as the amount of CO2 that is emitted during calcination at the production of Portland cement, but the model can also, with some adjustments, be used for the other cement types. The model has been applied on data from Sweden and the results show a CO2 uptake in 2011 in all existing structures of about 300 000 tonnes, which corresponds to about 17% of the total emissions (calcination and fuel) from the production of new cement for use in Sweden in the same year. The study also shows that in the years 2030 and 2050, an increase in the uptake in crushed concrete, from 12 000 tonnes today to 200 000 and 500 000 tonnes of CO2, respectively, could be possible if the waste handling is redesigned.},
  author       = {Andersson, Ronny and Fridh, Katja and Stripple, Håkan and Häglund, Martin},
  issn         = {1520-5851},
  language     = {eng},
  number       = {20},
  pages        = {11625--11633},
  publisher    = {The American Chemical Society},
  series       = {Environmental Science & Technology},
  title        = {Calculating CO2 Uptake for Existing Concrete Structures during and after Service Life},
  url          = {http://dx.doi.org/10.1021/es401775w},
  volume       = {47},
  year         = {2013},
}