Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability
Concrete waste as crushed concrete aggregates (CCA) in structural concrete prolongs the technical life of the reference concrete accomplishing closed loop recycling. CCA concrete reaches the reference concrete compressive strength and workability by the densification of CCA and cement paste. Our pre...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2021-06-01
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| Series: | Nordic Concrete Research |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/ncr-2020-0018 |
| _version_ | 1828873556970176512 |
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| author | Sadagopan Madumita Malaga Katarina Lundin Magnus Nagy Agnes |
| author_facet | Sadagopan Madumita Malaga Katarina Lundin Magnus Nagy Agnes |
| author_sort | Sadagopan Madumita |
| collection | DOAJ |
| description | Concrete waste as crushed concrete aggregates (CCA) in structural concrete prolongs the technical life of the reference concrete accomplishing closed loop recycling. CCA concrete reaches the reference concrete compressive strength and workability by the densification of CCA and cement paste. Our previous study demonstrates CCA densification by mechanical pre-processing, aggregate quality improvements discerned by increased packing density giving reference concrete strength and workability. This study addresses paste densification with blast furnace slag (GGBS) to replace 30 (wt.%) of Portland cement at reference concrete w/b ratio 0.5 and a lower w/b 0.42. Two CCA replacements are investigated: fine aggregates, CCA50; overall aggregate replacement, CCA100. |
| first_indexed | 2024-12-13T07:17:48Z |
| format | Article |
| id | doaj.art-907e5ef16ab84adab6c28d429374f1dc |
| institution | Directory Open Access Journal |
| issn | 2545-2819 |
| language | English |
| last_indexed | 2024-12-13T07:17:48Z |
| publishDate | 2021-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Nordic Concrete Research |
| spelling | doaj.art-907e5ef16ab84adab6c28d429374f1dc2022-12-21T23:55:29ZengSciendoNordic Concrete Research2545-28192021-06-01641112910.2478/ncr-2020-0018Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and WorkabilitySadagopan Madumita0Malaga Katarina1Lundin Magnus2Nagy Agnes3Ph.D., Department of Resource Recovery and Building Technology, University of Borås, 50190 Borås, SwedenAdjunct Professor, Ph.D., Department of Resource Recovery and Building Technology, University of Borås, 50190 Borås, Sweden. RISE, CBI Swedish Cement and Concrete Research Institute, Borås, SwedenPh.D.,Senior Lecturer, Department of Resource Recovery, University of Borås, 50190 Borås, SwedenPh.D.,Senior Lecturer, Department of Resource Recovery and Building Technology, University of Borås, 50190 Borås, SwedenConcrete waste as crushed concrete aggregates (CCA) in structural concrete prolongs the technical life of the reference concrete accomplishing closed loop recycling. CCA concrete reaches the reference concrete compressive strength and workability by the densification of CCA and cement paste. Our previous study demonstrates CCA densification by mechanical pre-processing, aggregate quality improvements discerned by increased packing density giving reference concrete strength and workability. This study addresses paste densification with blast furnace slag (GGBS) to replace 30 (wt.%) of Portland cement at reference concrete w/b ratio 0.5 and a lower w/b 0.42. Two CCA replacements are investigated: fine aggregates, CCA50; overall aggregate replacement, CCA100.https://doi.org/10.2478/ncr-2020-0018recycled concrete100% recycled aggregatessupplementary cementitious materialsblast furnace slagsustainabilitygreen concreteclimate-optimized concrete |
| spellingShingle | Sadagopan Madumita Malaga Katarina Lundin Magnus Nagy Agnes Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability Nordic Concrete Research recycled concrete 100% recycled aggregates supplementary cementitious materials blast furnace slag sustainability green concrete climate-optimized concrete |
| title | Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability |
| title_full | Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability |
| title_fullStr | Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability |
| title_full_unstemmed | Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability |
| title_short | Effects of Slag Addition and Mechanical Pre-Processing on the Properties of Recycled Concrete in Terms of Compressive Strength and Workability |
| title_sort | effects of slag addition and mechanical pre processing on the properties of recycled concrete in terms of compressive strength and workability |
| topic | recycled concrete 100% recycled aggregates supplementary cementitious materials blast furnace slag sustainability green concrete climate-optimized concrete |
| url | https://doi.org/10.2478/ncr-2020-0018 |
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