Development of a sustainable binder made of recycled high-performance concrete (HPC)
The high consumption of ordinary Portland cement (OPC) in high-performance concrete (HPC), combined with the growing accumulation of construction and demolition wastes (CDW), raises severe environmental and economic concerns. This study addresses both issues by proposing a novel sustainable binder m...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522007033 |
| _version_ | 1797990669311016960 |
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| author | Dana Daneshvar Teresa Liberto Maria Chiara Dalconi Waltraud Stöllinger Johannes Kirnbauer Agathe Robisson |
| author_facet | Dana Daneshvar Teresa Liberto Maria Chiara Dalconi Waltraud Stöllinger Johannes Kirnbauer Agathe Robisson |
| author_sort | Dana Daneshvar |
| collection | DOAJ |
| description | The high consumption of ordinary Portland cement (OPC) in high-performance concrete (HPC), combined with the growing accumulation of construction and demolition wastes (CDW), raises severe environmental and economic concerns. This study addresses both issues by proposing a novel sustainable binder made of milled recycled HPC (mRHPC). A series of HPC mix designs (R-HPC) was developed replacing OPC by mRHPC (0–100%), and characterized in fresh and hardened states. The residual reactivity of mRHPC was detected using X-ray diffraction, calorimetry, and rheological oscillatory measurements (SAOS). Replacement up to 30% resulted in comparable 28-day compressive and flexural strengths to that of the OPC reference specimen while slightly improving fresh properties. Furthermore, the performance of steel fiber reinforced R-HPC overlays was investigated in repair application, and 30% replacement ratio enhanced the tensile bond strength by a factor of 2.4. The measured improved flow properties and reduced drying shrinkage can explain this remarkable result. |
| first_indexed | 2024-04-11T08:40:11Z |
| format | Article |
| id | doaj.art-b4bb1881ce9e417e8a78791622185cd8 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-11T08:40:11Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-b4bb1881ce9e417e8a78791622185cd82022-12-22T04:34:14ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01571Development of a sustainable binder made of recycled high-performance concrete (HPC)Dana Daneshvar0Teresa Liberto1Maria Chiara Dalconi2Waltraud Stöllinger3Johannes Kirnbauer4Agathe Robisson5Research Group of Building Materials, Institute of Material Technology, Building Physics and Building Ecology, Faculty of Civil Engineering, Vienna University of Technology (TU Wien), Karlsplatz 13/207-01, A-1040 Vienna, AustriaResearch Group of Building Materials, Institute of Material Technology, Building Physics and Building Ecology, Faculty of Civil Engineering, Vienna University of Technology (TU Wien), Karlsplatz 13/207-01, A-1040 Vienna, AustriaDepartment of Geosciences – CIRCe, University of Padua, via G. Gradenigo 6, 35131 Padua, ItalyMixteresting GmbH, Im Bäckerfeld 19, 4060 Leonding, AustriaResearch Group of Building Materials, Institute of Material Technology, Building Physics and Building Ecology, Faculty of Civil Engineering, Vienna University of Technology (TU Wien), Karlsplatz 13/207-01, A-1040 Vienna, AustriaResearch Group of Building Materials, Institute of Material Technology, Building Physics and Building Ecology, Faculty of Civil Engineering, Vienna University of Technology (TU Wien), Karlsplatz 13/207-01, A-1040 Vienna, Austria; Corresponding author.The high consumption of ordinary Portland cement (OPC) in high-performance concrete (HPC), combined with the growing accumulation of construction and demolition wastes (CDW), raises severe environmental and economic concerns. This study addresses both issues by proposing a novel sustainable binder made of milled recycled HPC (mRHPC). A series of HPC mix designs (R-HPC) was developed replacing OPC by mRHPC (0–100%), and characterized in fresh and hardened states. The residual reactivity of mRHPC was detected using X-ray diffraction, calorimetry, and rheological oscillatory measurements (SAOS). Replacement up to 30% resulted in comparable 28-day compressive and flexural strengths to that of the OPC reference specimen while slightly improving fresh properties. Furthermore, the performance of steel fiber reinforced R-HPC overlays was investigated in repair application, and 30% replacement ratio enhanced the tensile bond strength by a factor of 2.4. The measured improved flow properties and reduced drying shrinkage can explain this remarkable result.http://www.sciencedirect.com/science/article/pii/S2214509522007033High-performance concrete (HPC)RecyclingConstruction and demolition waste (CDW)SustainabilitySupplementary cementitious materialsSAOS |
| spellingShingle | Dana Daneshvar Teresa Liberto Maria Chiara Dalconi Waltraud Stöllinger Johannes Kirnbauer Agathe Robisson Development of a sustainable binder made of recycled high-performance concrete (HPC) Case Studies in Construction Materials High-performance concrete (HPC) Recycling Construction and demolition waste (CDW) Sustainability Supplementary cementitious materials SAOS |
| title | Development of a sustainable binder made of recycled high-performance concrete (HPC) |
| title_full | Development of a sustainable binder made of recycled high-performance concrete (HPC) |
| title_fullStr | Development of a sustainable binder made of recycled high-performance concrete (HPC) |
| title_full_unstemmed | Development of a sustainable binder made of recycled high-performance concrete (HPC) |
| title_short | Development of a sustainable binder made of recycled high-performance concrete (HPC) |
| title_sort | development of a sustainable binder made of recycled high performance concrete hpc |
| topic | High-performance concrete (HPC) Recycling Construction and demolition waste (CDW) Sustainability Supplementary cementitious materials SAOS |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522007033 |
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