Self-healing characteristics of cement concrete containing expansive agent
Many studies have been conducted to identify the self-healing effect in cementitious materials. However, the knowledge regarding the self-healing effect is insufficient to utilize this effect for design purposes. This study examined the influence of numerous admixtures such as expansive agents (EA),...
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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/S2214509522007410 |
| _version_ | 1798046315313102848 |
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| author | Sungil Jeon Mohammad Shakhawat Hossain Seungyeon Han Pangil Choi Kyong-Ku Yun |
| author_facet | Sungil Jeon Mohammad Shakhawat Hossain Seungyeon Han Pangil Choi Kyong-Ku Yun |
| author_sort | Sungil Jeon |
| collection | DOAJ |
| description | Many studies have been conducted to identify the self-healing effect in cementitious materials. However, the knowledge regarding the self-healing effect is insufficient to utilize this effect for design purposes. This study examined the influence of numerous admixtures such as expansive agents (EA), ultra-fine fly ash (UFFA), finely ground granulated blast furnace slag (FGGBS), and silica fume (SF) on the self-healing capacity of Portland cement concrete. Here, focused on investigating the effect of the expansive agent (EA) used in concrete mixtures to identify whether the EA could act as a self-healing trigger in concrete materials that are frequently used in a bridge deck overlay. Ordinary Portland cement concrete (OPC), latex-modified concrete (LMC), and silica fume concrete (SFC) was used to compare the effect of the EA (0,4,8%, and 12%) in the ternary blended cement concrete on each material for bridge deck overlay concrete. In this study, the crack width was examined at 0,7,14 and 28 days respectively which were inducement at 3 and 7 days age of concrete specimens by the microscopic image analysis system. Samples with healed cracks with a width range of 100–200 µm and EA ≥ 8% on day 28 exhibited faster self-healing performance. Additionally, we calculated the self-cracking closing ratio and performed a microstructure analysis by SEM/EDS. Moreover, the compressive strength was examined at 7, 28,56, and 90 days for understanding the improved performance of all concrete mixtures. |
| first_indexed | 2024-04-11T23:35:38Z |
| format | Article |
| id | doaj.art-58912766b4944e998cca6246e0cbd9a2 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-11T23:35:38Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-58912766b4944e998cca6246e0cbd9a22022-12-22T03:56:57ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01609Self-healing characteristics of cement concrete containing expansive agentSungil Jeon0Mohammad Shakhawat Hossain1Seungyeon Han2Pangil Choi3Kyong-Ku Yun4Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, South KoreaDepartment of Civil Engineering, Kangwon National University, 1 Gangwondaegil, Chuncheon 24341, South KoreaKorea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, South Korea; KIIT(Kangwon Institute of Inclusive Technology), Kangwon National University, 1 Gangwondaegil, Chuncheon 24341, South KoreaMaintenance Division, Texas Department of Transportation, Austin TX78701, USADepartment of Civil Engineering, Kangwon National University, 1 Gangwondaegil, Chuncheon 24341, South Korea; Corresponding author.Many studies have been conducted to identify the self-healing effect in cementitious materials. However, the knowledge regarding the self-healing effect is insufficient to utilize this effect for design purposes. This study examined the influence of numerous admixtures such as expansive agents (EA), ultra-fine fly ash (UFFA), finely ground granulated blast furnace slag (FGGBS), and silica fume (SF) on the self-healing capacity of Portland cement concrete. Here, focused on investigating the effect of the expansive agent (EA) used in concrete mixtures to identify whether the EA could act as a self-healing trigger in concrete materials that are frequently used in a bridge deck overlay. Ordinary Portland cement concrete (OPC), latex-modified concrete (LMC), and silica fume concrete (SFC) was used to compare the effect of the EA (0,4,8%, and 12%) in the ternary blended cement concrete on each material for bridge deck overlay concrete. In this study, the crack width was examined at 0,7,14 and 28 days respectively which were inducement at 3 and 7 days age of concrete specimens by the microscopic image analysis system. Samples with healed cracks with a width range of 100–200 µm and EA ≥ 8% on day 28 exhibited faster self-healing performance. Additionally, we calculated the self-cracking closing ratio and performed a microstructure analysis by SEM/EDS. Moreover, the compressive strength was examined at 7, 28,56, and 90 days for understanding the improved performance of all concrete mixtures.http://www.sciencedirect.com/science/article/pii/S2214509522007410Self-healingShrinkageTernary blended concreteExpansion agentMicroscopic image analysisConcrete overlay for bridge deck |
| spellingShingle | Sungil Jeon Mohammad Shakhawat Hossain Seungyeon Han Pangil Choi Kyong-Ku Yun Self-healing characteristics of cement concrete containing expansive agent Case Studies in Construction Materials Self-healing Shrinkage Ternary blended concrete Expansion agent Microscopic image analysis Concrete overlay for bridge deck |
| title | Self-healing characteristics of cement concrete containing expansive agent |
| title_full | Self-healing characteristics of cement concrete containing expansive agent |
| title_fullStr | Self-healing characteristics of cement concrete containing expansive agent |
| title_full_unstemmed | Self-healing characteristics of cement concrete containing expansive agent |
| title_short | Self-healing characteristics of cement concrete containing expansive agent |
| title_sort | self healing characteristics of cement concrete containing expansive agent |
| topic | Self-healing Shrinkage Ternary blended concrete Expansion agent Microscopic image analysis Concrete overlay for bridge deck |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522007410 |
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