Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures
South Korean concrete crack management standards deem cracks larger than 0.3 mm to be defects. However, concrete crack reduction technology is lacking and urgently needed to meet these standards. In this study, the durability characteristics of blast-furnace slag concrete with an expansion material...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523003595 |
| _version_ | 1797798908077801472 |
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| author | Sanghyuck Yoon Chansoo Jeon Wonyoung Choi |
| author_facet | Sanghyuck Yoon Chansoo Jeon Wonyoung Choi |
| author_sort | Sanghyuck Yoon |
| collection | DOAJ |
| description | South Korean concrete crack management standards deem cracks larger than 0.3 mm to be defects. However, concrete crack reduction technology is lacking and urgently needed to meet these standards. In this study, the durability characteristics of blast-furnace slag concrete with an expansion material and swelling admixtures were examined. We observed that expansion using the expansive material not only contributed to the initial expansion but also continued to act during drying shrinkage, maintaining a drying-shrinkage reduction rate of over 40 %. This expansion effect is shown in the initial stage and contributes to compensating for contraction by continuous expansion activity in the long term. In addition, the freeze-thaw resistance was observed to be higher in the case of a mixture substituted with 30 % fine blast-furnace slag powder than in the standard mixture using normal Portland cement, and the carbonation resistance showed that the carbonation penetration depth decreased as the curing time increased. Thus, to achieve crack control by initial drying shrinkage of the blast-furnace slag concrete, it is expected that the expansion material would effectively control cracking, and the use of this expansion material will be advantageous in securing better quality bentonite than hydroxy propyl methyl cellulose. |
| first_indexed | 2024-03-13T04:11:56Z |
| format | Article |
| id | doaj.art-d607f543636d4d81a6bab8fd8679888a |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:11:56Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-d607f543636d4d81a6bab8fd8679888a2023-06-21T06:54:48ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e02179Durability of blast-furnace slag concrete mixed with expansive and swelling admixturesSanghyuck Yoon0Chansoo Jeon1Wonyoung Choi2Department of Building Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of KoreaConstruction Test & Certification Department, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea; Corresponding author.Construction Test & Certification Department, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of KoreaSouth Korean concrete crack management standards deem cracks larger than 0.3 mm to be defects. However, concrete crack reduction technology is lacking and urgently needed to meet these standards. In this study, the durability characteristics of blast-furnace slag concrete with an expansion material and swelling admixtures were examined. We observed that expansion using the expansive material not only contributed to the initial expansion but also continued to act during drying shrinkage, maintaining a drying-shrinkage reduction rate of over 40 %. This expansion effect is shown in the initial stage and contributes to compensating for contraction by continuous expansion activity in the long term. In addition, the freeze-thaw resistance was observed to be higher in the case of a mixture substituted with 30 % fine blast-furnace slag powder than in the standard mixture using normal Portland cement, and the carbonation resistance showed that the carbonation penetration depth decreased as the curing time increased. Thus, to achieve crack control by initial drying shrinkage of the blast-furnace slag concrete, it is expected that the expansion material would effectively control cracking, and the use of this expansion material will be advantageous in securing better quality bentonite than hydroxy propyl methyl cellulose.http://www.sciencedirect.com/science/article/pii/S2214509523003595Drying shrinkage crackingFreeze–thawGranulated blast-furnace slagGround expansive admixtureSwelling admixture |
| spellingShingle | Sanghyuck Yoon Chansoo Jeon Wonyoung Choi Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures Case Studies in Construction Materials Drying shrinkage cracking Freeze–thaw Granulated blast-furnace slag Ground expansive admixture Swelling admixture |
| title | Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures |
| title_full | Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures |
| title_fullStr | Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures |
| title_full_unstemmed | Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures |
| title_short | Durability of blast-furnace slag concrete mixed with expansive and swelling admixtures |
| title_sort | durability of blast furnace slag concrete mixed with expansive and swelling admixtures |
| topic | Drying shrinkage cracking Freeze–thaw Granulated blast-furnace slag Ground expansive admixture Swelling admixture |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523003595 |
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