Challenges in material recycling for postwar reconstruction
Besides the fact that concrete recycling allows to avoid landfills disposal and contributes to a closed-cycle economy, such option may be very much in demand in war struck regions such as Ukraine, which after the end of the war, are faced with the problem of rebuilding and reconstructing. Beyond th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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RILEM Publications SARL
2022-12-01
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| Series: | RILEM Technical Letters |
| Subjects: | |
| Online Access: | http://letters.rilem.net/index.php/rilem/article/view/171 |
| _version_ | 1797980355802693632 |
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| author | Viacheslav Troian Volodymyr Gots Emmanuel Keita Nicolas Roussel Ueli Angst Robert J. Flatt |
| author_facet | Viacheslav Troian Volodymyr Gots Emmanuel Keita Nicolas Roussel Ueli Angst Robert J. Flatt |
| author_sort | Viacheslav Troian |
| collection | DOAJ |
| description |
Besides the fact that concrete recycling allows to avoid landfills disposal and contributes to a closed-cycle economy, such option may be very much in demand in war struck regions such as Ukraine, which after the end of the war, are faced with the problem of rebuilding and reconstructing. Beyond this emergency, even in peacetime extensive parts of the building stock will sooner or later need to be replaced and concrete recycling is called to play an increasing role there.
However, depending on the technology and degree to which aggregates are recycled, concrete may be characterized by poor workability, reduced mechanical properties, increased shrinkage and reduced durability. This deterioration in the properties of recycled concrete is usually attributed to the characteristics of the old cement mortar remaining on the surface of the recycled aggregates, which is best considered as an additional volume of hardened cement paste with fine aggregate and additional porosity. This article attempts to underline how such key concepts help frame the current state of knowledge about concrete recycling, understand the implications of existing regulations, in order to define pragmatic and efficient routes for broadening the use of concrete recycling in war struck regions, with specific examples regarding Ukraine.
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| first_indexed | 2024-04-11T05:53:03Z |
| format | Article |
| id | doaj.art-5ae4926ce59940a9a1169c579a9e88f5 |
| institution | Directory Open Access Journal |
| issn | 2518-0231 |
| language | English |
| last_indexed | 2024-04-11T05:53:03Z |
| publishDate | 2022-12-01 |
| publisher | RILEM Publications SARL |
| record_format | Article |
| series | RILEM Technical Letters |
| spelling | doaj.art-5ae4926ce59940a9a1169c579a9e88f52022-12-22T04:42:00ZengRILEM Publications SARLRILEM Technical Letters2518-02312022-12-01710.21809/rilemtechlett.2022.171Challenges in material recycling for postwar reconstructionViacheslav Troian0Volodymyr GotsEmmanuel Keita Nicolas RousselUeli AngstRobert J. FlattETH Zürich Besides the fact that concrete recycling allows to avoid landfills disposal and contributes to a closed-cycle economy, such option may be very much in demand in war struck regions such as Ukraine, which after the end of the war, are faced with the problem of rebuilding and reconstructing. Beyond this emergency, even in peacetime extensive parts of the building stock will sooner or later need to be replaced and concrete recycling is called to play an increasing role there. However, depending on the technology and degree to which aggregates are recycled, concrete may be characterized by poor workability, reduced mechanical properties, increased shrinkage and reduced durability. This deterioration in the properties of recycled concrete is usually attributed to the characteristics of the old cement mortar remaining on the surface of the recycled aggregates, which is best considered as an additional volume of hardened cement paste with fine aggregate and additional porosity. This article attempts to underline how such key concepts help frame the current state of knowledge about concrete recycling, understand the implications of existing regulations, in order to define pragmatic and efficient routes for broadening the use of concrete recycling in war struck regions, with specific examples regarding Ukraine. http://letters.rilem.net/index.php/rilem/article/view/171ConcreteRecyclingAggregatesPorosityAdsorption |
| spellingShingle | Viacheslav Troian Volodymyr Gots Emmanuel Keita Nicolas Roussel Ueli Angst Robert J. Flatt Challenges in material recycling for postwar reconstruction RILEM Technical Letters Concrete Recycling Aggregates Porosity Adsorption |
| title | Challenges in material recycling for postwar reconstruction |
| title_full | Challenges in material recycling for postwar reconstruction |
| title_fullStr | Challenges in material recycling for postwar reconstruction |
| title_full_unstemmed | Challenges in material recycling for postwar reconstruction |
| title_short | Challenges in material recycling for postwar reconstruction |
| title_sort | challenges in material recycling for postwar reconstruction |
| topic | Concrete Recycling Aggregates Porosity Adsorption |
| url | http://letters.rilem.net/index.php/rilem/article/view/171 |
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