The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory
Recycled aggregate concrete (RAC) has multiple interface transition zones (ITZs) due to its complex composition, providing convenient ion transfer channels. Therefore, it is significant to explore the changes of the internal pore structure in RAC under ion erosion conditions for quantifying and pred...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523009555 |
| _version_ | 1797389510005227520 |
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| author | Song Gao Zhenwei Qin Wujian Long Xin Guo Yuan Ji Hengwu Zhang Fei Xing Shiyinuo Wang Ang Liu |
| author_facet | Song Gao Zhenwei Qin Wujian Long Xin Guo Yuan Ji Hengwu Zhang Fei Xing Shiyinuo Wang Ang Liu |
| author_sort | Song Gao |
| collection | DOAJ |
| description | Recycled aggregate concrete (RAC) has multiple interface transition zones (ITZs) due to its complex composition, providing convenient ion transfer channels. Therefore, it is significant to explore the changes of the internal pore structure in RAC under ion erosion conditions for quantifying and predicting ion transfer mechanisms. This paper innovatively utilizes the seepage effect for investigating the evolution of pore structures in RAC under sulfate attack. We conduct a systematic experimental study on the transport of sulfate ions in RAC with different fly ash (FA) substitution rates under dry-wet cycles. Combining backscattered electron imaging (BSE), permeation and fractal characteristics, this paper deeply explore the relationship between pore structure feature, sulfate percolation mechanism and the macroscopic properties of RAC incorporated with different amount of FA. |
| first_indexed | 2024-03-08T22:57:01Z |
| format | Article |
| id | doaj.art-e4e76aa3adc6431a97a6452d384b9d13 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-08T22:57:01Z |
| publishDate | 2024-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-e4e76aa3adc6431a97a6452d384b9d132023-12-16T06:07:34ZengElsevierCase Studies in Construction Materials2214-50952024-07-0120e02774The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theorySong Gao0Zhenwei Qin1Wujian Long2Xin Guo3Yuan Ji4Hengwu Zhang5Fei Xing6Shiyinuo Wang7Ang Liu8College of Civil Engineering, Qingdao University of Technology, Qingdao 266520, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266520, ChinaGuangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, ChinaSchool of Qilu Transportation, Shandong University, Jinan 250061, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266520, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266520, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266520, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266520, ChinaCollege of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China; Corresponding author.Recycled aggregate concrete (RAC) has multiple interface transition zones (ITZs) due to its complex composition, providing convenient ion transfer channels. Therefore, it is significant to explore the changes of the internal pore structure in RAC under ion erosion conditions for quantifying and predicting ion transfer mechanisms. This paper innovatively utilizes the seepage effect for investigating the evolution of pore structures in RAC under sulfate attack. We conduct a systematic experimental study on the transport of sulfate ions in RAC with different fly ash (FA) substitution rates under dry-wet cycles. Combining backscattered electron imaging (BSE), permeation and fractal characteristics, this paper deeply explore the relationship between pore structure feature, sulfate percolation mechanism and the macroscopic properties of RAC incorporated with different amount of FA.http://www.sciencedirect.com/science/article/pii/S2214509523009555FractalInterface transition zoneIon transferPercolationRAC |
| spellingShingle | Song Gao Zhenwei Qin Wujian Long Xin Guo Yuan Ji Hengwu Zhang Fei Xing Shiyinuo Wang Ang Liu The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory Case Studies in Construction Materials Fractal Interface transition zone Ion transfer Percolation RAC |
| title | The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory |
| title_full | The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory |
| title_fullStr | The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory |
| title_full_unstemmed | The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory |
| title_short | The sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory |
| title_sort | sulfate transfer characteristics in recycled aggregate concrete incorporated with fly ash under percolation theory |
| topic | Fractal Interface transition zone Ion transfer Percolation RAC |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523009555 |
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