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  <doc>
    <id>7923</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>18</pageNumber>
    <edition/>
    <issue/>
    <volume>18</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace/>
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    <title language="eng">Strategies for Minimizing Environmental Impact in Construction: A Case Study of a Cementitious 3D Printed Lost Formwork for a Staircase</title>
    <abstract language="eng">The construction industry faces significant challenges, including environmental sustainability, rising material costs, and a shortage of skilled labor. Digital fabrication technologies offer innovative solutions to address these issues by reducing raw material consumption and waste generation. Among these, 3D printing technologies offer distinct advantages over traditional construction methods, particularly in handling complex geometries. However, the significant environmental impact of cement in 3D printed concrete, due to its high rheological and printability requirements, remains a concern. This study&#13;
introduces a novel application of 3D printed permanent formwork in the construction of a winder staircase, assessed through an Environmental Life Cycle Assessment (LCA) from cradle to gate. By comparing the environmental impacts of various construction materials and processes, this study highlights the comparative advantages and disadvantages of conventional methods versus 3D printing. The LCA results reveal that traditional production methods, particularly those using plywood formwork, exhibit higher environmental impacts. In contrast, timber formwork performs better than most 3D printed mixtures&#13;
in terms of Global Warming Potential (GWP), Acidification Potential (AP), and abiotic depletion potential (ADP). The findings of this study underscore the potential of additive manufacturing for sustainable construction, particularly through the use of low-clinker cement in 3D printed formwork, offering a promising pathway towards reducing the environmental footprint of construction activities</abstract>
    <parentTitle language="eng">materials</parentTitle>
    <identifier type="doi">10.3390/ma18040825</identifier>
    <identifier type="urn">urn:nbn:de:bvb:898-opus4-79236</identifier>
    <note>Corresponding author der OTHR: Sophie Viktoria Albrecht</note>
    <enrichment key="ConferenceStatement">This paper is an extended version of our paper published in Albrecht, S.V.; Hellerbrand, S.; Weininger, F.; Thiel, C. Possibilities for Reducing the Environmental Impact in the Construction Industry Using the Example of a 3D Printed Staircase. In Proceedings of the 4th International Conference on Sustainable Development in Civil, Urban and Transportation Eng. (CUTE 2024), Wroclaw, Poland, 14–17 October 2024</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <enrichment key="CorrespondingAuthor">Albrecht, Sophie Viktoria</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Sophie Viktoria Albrecht</author>
    <author>Stefan Hellerbrand</author>
    <author>Florian Weininger</author>
    <author>Charlotte Thiel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>permanent formwork</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>selective cement activation (SCA)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>3D concrete printing (3DCP)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>life cycle assessment (LCA)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>additive manufacturing in construction (AMC)</value>
    </subject>
    <collection role="institutes" number="FakBau">Fakultät Bauingenieurwesen</collection>
    <collection role="oaweg" number="">Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="oaweg" number="">Corresponding author der OTH Regensburg</collection>
    <collection role="funding" number="">Publikationsfonds der OTH Regensburg</collection>
    <collection role="DFGFachsystematik" number="1">Ingenieurwissenschaften</collection>
    <thesisPublisher>Ostbayerische Technische Hochschule Regensburg</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-oth-regensburg/files/7923/Albrecht_materials_825_2025.pdf</file>
  </doc>
  <doc>
    <id>7983</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>55</pageFirst>
    <pageLast>64</pageLast>
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    <publisherName>Springer Nature</publisherName>
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    <title language="eng">Possibilities for Reducing the Environmental Impact in the Construction Industry Using the Example of a 3D Printed Staircase</title>
    <abstract language="eng">The construction industry faces numerous challenges, including environmental sustainability, high material costs, and a shortage of skilled labor. Modern technologies enabling digital fabrication present opportunities to reduce raw material consumption and waste generation. Among these, 3D printing technologies offer distinct advantages over traditional construction methods, particularly in handling complex geometries. However, the significant environmental impact of cement in 3D printed concrete, due to its high rheological and printability requirements, remains a concern. This study introduces a novel application of 3D printed permanent formwork in the construction of a winder staircase, assessed through an environmental Life Cycle Assessment (LCA) from cradle to gate. By comparing the environmental impacts of various construction materials and processes, the study highlights the comparative advantages and disadvantages of conventional methods versus 3D printing. The LCA results reveal that traditional production methods, particularly those using plywood formwork, exhibit higher environmental impacts. In contrast, timber formwork performs better than most 3D printed mixtures in terms of Global Warming Potential (GWP), Acidification Potential (AP), and Abiotic Depletion Potential (ADP). The findings of this study underscore the potential of additive manufacturing for sustainable construction, particularly through the use of low clinker cement in 3D printed formwork, offering a promising pathway towards reducing the environmental footprint of construction activities.</abstract>
    <parentTitle language="eng">Proceedings of the 4th International Conference on Sustainable Development in Civil, Urban and Transportation Engineering (CUTE 2024), 14–17 October, Wrocław, Poland</parentTitle>
    <identifier type="doi">10.1007/978-981-97-9400-3_6</identifier>
    <identifier type="isbn">978-981-97-9400-3</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <enrichment key="OtherSeries">Lecture Notes in Civil Engineering ; 418</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Sophie Viktoria Albrecht</author>
    <author>Charlotte Thiel</author>
    <author>Stefan Hellerbrand</author>
    <author>Florian Weininger</author>
    <collection role="institutes" number="FakBau">Fakultät Bauingenieurwesen</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="DFGFachsystematik" number="1">Ingenieurwissenschaften</collection>
  </doc>
  <doc>
    <id>8419</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>7</pageNumber>
    <edition/>
    <issue/>
    <volume>409</volume>
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    <publisherName>EDP Sciences</publisherName>
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    <title language="eng">Increasing efficiency and sustainability: A comparative analysis of concrete 3D printing and traditional methods based on case studies</title>
    <abstract language="eng">At the forthcoming Concrete Solutions 2025 conference, the subject of concrete 3D printing will be explored in the “Case Studies” category, with a comparison to traditional methods. Concrete 3D printing offers several significant advantages, including the ability to create complex geometries, increased material efficiency, faster build times and cost savings. These are particularly important in the context of the current skilled labour shortage and emphasis on resource efficiency in construction. Nevertheless, challenges persist in the areas of machine reliability, process integration, and material adaptation to meet the requirements of 3D printing. The case studies will present modular and design-engineering-based strategies for the development of efficient, scalable automation solutions that integrate 3D printing into existing processes and allow for project-specific customisation through selective automation. These findings provide a robust framework for industrial applications that enhance efficiency and adaptability. By comparing concrete 3D printing to conventional methods, the insights offer a foundation for advancing automated production in construction, promoting scalable, resource-efficient, and economically sustainable practices that address the industry’s evolving demands.</abstract>
    <parentTitle language="eng">MATEC Web of Conferences</parentTitle>
    <identifier type="doi">10.1051/matecconf/202540913005</identifier>
    <note>Corresponding author der OTH Regensburg: Merve Karamara</note>
    <enrichment key="opus.import.date">2025-07-21T09:53:58+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
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    <enrichment key="ConferenceStatement">Concrete Solutions 2025 – 9th International Conference on Concrete Repair, Durability &amp; Technology, 16-18. June 2025, Lisbon</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Merve Karamara</author>
    <author>Moritz-Ole Bogdanski</author>
    <author>Raphael Zöller</author>
    <author>Sophie Viktoria Albrecht</author>
    <author>Thomas Linner</author>
    <author>Thomas Bock</author>
    <author>Thomas Braml</author>
    <collection role="institutes" number="FakBau">Fakultät Bauingenieurwesen</collection>
    <collection role="oaweg" number="">Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="oaweg" number="">Corresponding author der OTH Regensburg</collection>
  </doc>
  <doc>
    <id>8319</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>10</pageNumber>
    <edition/>
    <issue/>
    <volume>409</volume>
    <type>conferenceobject</type>
    <publisherName>EDP Sciences</publisherName>
    <publisherPlace>Les Ulis</publisherPlace>
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    <completedDate>2025-06-13</completedDate>
    <publishedDate>--</publishedDate>
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    <title language="eng">Decoding concrete’s environmental performance: A detailed  analysis of global EPDs across the entire life cycle</title>
    <abstract language="eng">Environmental Product Declarations (EPDs) for concrete are essential tools to quantify the environmental impact of this versatile building material throughout its life cycle, supporting sustainable choices in construction. Concrete is made up of raw materials like cement, water, aggregates, additives, and admixtures, which can be mixed in diverse ways. This variability often necessitates site-specific EPDs, as emissions and environmental impacts depend greatly on cement type, transport routes, and specific production processes. This study analyses various data sources, focusing on EPDs according to ISO 14025 and EN 15804. The life cycle phases A1-A3, B1-B7, C1-C4 and D are considered and compared. The results demonstrate that factors such as scenario assumptions, methodological choices, and allocation procedures significantly influence concrete’s environmental impact. Transparent EPDs improve assessment reliability, while allocation methods, especially in phases D and end-of-life, significantly influence reported benefits, underscoring the importance of careful allocation for accurate impact evaluations. Improved standardisation, transparency, and alignment with EN 16757 would enhance EPD comparability and reliability. Overall, the study identifies key parameters such as recycling potential, production stage and allocation methods as substantial factors in the environmental performance of concrete.</abstract>
    <parentTitle language="deu">MATEC Web of Conferences</parentTitle>
    <identifier type="doi">10.1051/matecconf/202540913001</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="ConferenceStatement">Concrete Solutions 2025 – 9th International Conference on Concrete Repair, Durability &amp; Technology, 16.-18.06.2025, Lisbon</enrichment>
    <enrichment key="CorrespondingAuthor">Sophie Albrecht</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Sophie Viktoria Albrecht</author>
    <author>Charlotte Thiel</author>
    <author>Merve Karamara</author>
    <collection role="institutes" number="FakBau">Fakultät Bauingenieurwesen</collection>
    <collection role="oaweg" number="">Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium</collection>
    <collection role="othforschungsschwerpunkt" number="16313">Gebäude und Infrastruktur</collection>
    <collection role="oaweg" number="">Corresponding author der OTH Regensburg</collection>
  </doc>
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