Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island
Recycled aggregate is essential to protect Jeju Island’s natural environment, but waste concrete, including porous basalt, is a factor that lowers the quality of recycled aggregate. Therefore, an experiment was conducted to analyze the properties of concrete application of basalt-based recycled aggr...
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doaj-157eb2cd999345ba83c17f9d04d42d812021-09-26T00:37:33ZengMDPI AGMaterials1996-19442021-09-01145429542910.3390/ma14185429Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju IslandHong-Beom Choi0Jin-O Park1Tae-Hyun Kim2Kyeo-Re Lee3Construction Test & Assessment Center, Construction Test & Certification Department, Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, KoreaConstruction Test & Assessment Center, Construction Test & Certification Department, Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, KoreaConstruction Test & Assessment Center, Construction Test & Certification Department, Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, KoreaConstruction Test & Assessment Center, Construction Test & Certification Department, Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, KoreaRecycled aggregate is essential to protect Jeju Island’s natural environment, but waste concrete, including porous basalt, is a factor that lowers the quality of recycled aggregate. Therefore, an experiment was conducted to analyze the properties of concrete application of basalt-based recycled aggregate (B-RA) through quality improvement. The absorption of the B-RA ranged from 3–5%; restricting its absorption to less than 3% was challenging owing to its porosity and irregular shape. However, the increase in the solid volume percentage of the concrete when replacing 25 or 50% of fresh basalt aggregate with recycled basalt aggregate improved the mechanical performance of the concrete, especially at 25%, for which a compressive strength of 55.9 MPa and modulus of elasticity of 25.9 GPa exceeded those of concrete with fresh basalt aggregate. Moreover, increasing the replacement ratio of the fresh basalt with recycled aggregate reduced the slump and decreased the air content, consequently increasing the concrete drying shrinkage. However, the replacement of fresh basalt aggregate with recycled basalt aggregate unaltered the mechanical performance of the concrete. The results indicate that efficient use of recycled aggregates can yield superior performance to that of fresh basalt, irrespective of aggregate quality.https://www.mdpi.com/1996-1944/14/18/5429islandbasaltrecycled aggregateconcrete |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hong-Beom Choi Jin-O Park Tae-Hyun Kim Kyeo-Re Lee |
spellingShingle |
Hong-Beom Choi Jin-O Park Tae-Hyun Kim Kyeo-Re Lee Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island Materials island basalt recycled aggregate concrete |
author_facet |
Hong-Beom Choi Jin-O Park Tae-Hyun Kim Kyeo-Re Lee |
author_sort |
Hong-Beom Choi |
title |
Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island |
title_short |
Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island |
title_full |
Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island |
title_fullStr |
Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island |
title_full_unstemmed |
Mechanical Properties of Basalt-Based Recycled Aggregate Concrete for Jeju Island |
title_sort |
mechanical properties of basalt-based recycled aggregate concrete for jeju island |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-09-01 |
description |
Recycled aggregate is essential to protect Jeju Island’s natural environment, but waste concrete, including porous basalt, is a factor that lowers the quality of recycled aggregate. Therefore, an experiment was conducted to analyze the properties of concrete application of basalt-based recycled aggregate (B-RA) through quality improvement. The absorption of the B-RA ranged from 3–5%; restricting its absorption to less than 3% was challenging owing to its porosity and irregular shape. However, the increase in the solid volume percentage of the concrete when replacing 25 or 50% of fresh basalt aggregate with recycled basalt aggregate improved the mechanical performance of the concrete, especially at 25%, for which a compressive strength of 55.9 MPa and modulus of elasticity of 25.9 GPa exceeded those of concrete with fresh basalt aggregate. Moreover, increasing the replacement ratio of the fresh basalt with recycled aggregate reduced the slump and decreased the air content, consequently increasing the concrete drying shrinkage. However, the replacement of fresh basalt aggregate with recycled basalt aggregate unaltered the mechanical performance of the concrete. The results indicate that efficient use of recycled aggregates can yield superior performance to that of fresh basalt, irrespective of aggregate quality. |
topic |
island basalt recycled aggregate concrete |
url |
https://www.mdpi.com/1996-1944/14/18/5429 |
work_keys_str_mv |
AT hongbeomchoi mechanicalpropertiesofbasaltbasedrecycledaggregateconcreteforjejuisland AT jinopark mechanicalpropertiesofbasaltbasedrecycledaggregateconcreteforjejuisland AT taehyunkim mechanicalpropertiesofbasaltbasedrecycledaggregateconcreteforjejuisland AT kyeorelee mechanicalpropertiesofbasaltbasedrecycledaggregateconcreteforjejuisland |
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