Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Life cycle assessment of alkali-activated materials: a systematic literature review
https://orcid.org/http://orcid.org/0000-0001-8583-3359
The physical–mechanical, chemical, and durability characteristics of alkali-activated materials (AAMs) have been widely investigated. However, a critical gap in the literature is the lack of a comprehensive overview of recently published literature regarding the life cycle assessment (LCA) of these binders. This study aims to fill that gap by conducting a systematic literature review of globally published literature on the topic. This paper consolidates knowledge by searching different databases, focusing on LCA studies that used AAMs as pastes, mortars, concretes, bricks, and rammed earth/soil blocks. The selected articles were reviewed and categorized based on precursors, alkaline activators, functional units, system boundaries, life cycle inventory databases, allocation, impact methodologies, and software used.
Additionally, this paper also critically analyzes the key challenges of LCA for AAMs. The major challenges were identified as selecting a functional unit, subjectivity in boundary systems, and data interpretation. This work concludes that AAMs show substantial advantages in global warming potential compared to ordinary Portland cement-based materials; however, the average of other categories such as marine ecotoxicity and ozone layer depletion has been reported to be higher than for the reference samples.
• LCA of alkali-activated materials and/or geopolymers are critically reviewed, and the trends and opportunities in the topic are highlighted.
•Using a systematic approach to provide an up-to-date statistic of the growth patterns of interest in LCA of AAMs.
•Results underline the importance of factors that should be explicitly stated in future LCA studies.
•The reported impacts of the AAM products in literature compare with cement-based reference mixtures for all environmental categories.
Life cycle assessment of alkali-activated materials: a systematic literature review
https://orcid.org/http://orcid.org/0000-0001-8583-3359
The physical–mechanical, chemical, and durability characteristics of alkali-activated materials (AAMs) have been widely investigated. However, a critical gap in the literature is the lack of a comprehensive overview of recently published literature regarding the life cycle assessment (LCA) of these binders. This study aims to fill that gap by conducting a systematic literature review of globally published literature on the topic. This paper consolidates knowledge by searching different databases, focusing on LCA studies that used AAMs as pastes, mortars, concretes, bricks, and rammed earth/soil blocks. The selected articles were reviewed and categorized based on precursors, alkaline activators, functional units, system boundaries, life cycle inventory databases, allocation, impact methodologies, and software used.
Additionally, this paper also critically analyzes the key challenges of LCA for AAMs. The major challenges were identified as selecting a functional unit, subjectivity in boundary systems, and data interpretation. This work concludes that AAMs show substantial advantages in global warming potential compared to ordinary Portland cement-based materials; however, the average of other categories such as marine ecotoxicity and ozone layer depletion has been reported to be higher than for the reference samples.
• LCA of alkali-activated materials and/or geopolymers are critically reviewed, and the trends and opportunities in the topic are highlighted.
•Using a systematic approach to provide an up-to-date statistic of the growth patterns of interest in LCA of AAMs.
•Results underline the importance of factors that should be explicitly stated in future LCA studies.
•The reported impacts of the AAM products in literature compare with cement-based reference mixtures for all environmental categories.
Life cycle assessment of alkali-activated materials: a systematic literature review
https://orcid.org/http://orcid.org/0000-0001-8583-3359
The physical–mechanical, chemical, and durability characteristics of alkali-activated materials (AAMs) have been widely investigated. However, a critical gap in the literature is the lack of a comprehensive overview of recently published literature regarding the life cycle assessment (LCA) of these binders. This study aims to fill that gap by conducting a systematic literature review of globally published literature on the topic. This paper consolidates knowledge by searching different databases, focusing on LCA studies that used AAMs as pastes, mortars, concretes, bricks, and rammed earth/soil blocks. The selected articles were reviewed and categorized based on precursors, alkaline activators, functional units, system boundaries, life cycle inventory databases, allocation, impact methodologies, and software used.
Additionally, this paper also critically analyzes the key challenges of LCA for AAMs. The major challenges were identified as selecting a functional unit, subjectivity in boundary systems, and data interpretation. This work concludes that AAMs show substantial advantages in global warming potential compared to ordinary Portland cement-based materials; however, the average of other categories such as marine ecotoxicity and ozone layer depletion has been reported to be higher than for the reference samples.
• LCA of alkali-activated materials and/or geopolymers are critically reviewed, and the trends and opportunities in the topic are highlighted.
•Using a systematic approach to provide an up-to-date statistic of the growth patterns of interest in LCA of AAMs.
•Results underline the importance of factors that should be explicitly stated in future LCA studies.
•The reported impacts of the AAM products in literature compare with cement-based reference mixtures for all environmental categories.
Life cycle assessment of alkali-activated materials: a systematic literature review
Low-carbon Mater. Green Constr.
Nikravan, Morteza (Autor:in) / Firdous, Rafia (Autor:in) / Stephan, Dietmar (Autor:in)
05.04.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Alkali-activated material , Geopolymer , Life cycle assessment (LCA) , Functional unit , Life cycle inventory (LCI) 碱激发材料 , 地质聚合物 , 生命周期评估 (LCA) , 功能单元 , 生命周期清单 (LCI) , Engineering , Civil Engineering , Building Construction and Design , Building Materials , Sustainable Architecture/Green Buildings , Renewable and Green Energy
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