Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack
To study the corrosion resistance properties of multiscale polypropylene fiber-reinforced concrete (MPFRC) when subjected to sulfate attack, two types of fine polypropylene fiber (FPF) and one type of coarse polypropylene fiber (CPF) were selected for single doping or hybridization into concrete. A...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522001978 |
| _version_ | 1811337694779801600 |
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| author | Ninghui Liang Jinwang Mao Ru Yan Xinrong Liu Xiaohan Zhou |
| author_facet | Ninghui Liang Jinwang Mao Ru Yan Xinrong Liu Xiaohan Zhou |
| author_sort | Ninghui Liang |
| collection | DOAJ |
| description | To study the corrosion resistance properties of multiscale polypropylene fiber-reinforced concrete (MPFRC) when subjected to sulfate attack, two types of fine polypropylene fiber (FPF) and one type of coarse polypropylene fiber (CPF) were selected for single doping or hybridization into concrete. A sodium sulfate solution (10 wt%) was used in the sulfate attack drying-wetting cycle. A one-dimensional SO42- concentration distribution model was established. The corrosion resistance mechanism of polypropylene fiber-reinforced concrete (PFRC) was revealed based on concrete compressive strength tests, ion concentration tests, and micro tests under different sulfate attack ages. The results showed that PFRC maintained its integrity even after being subjected to sulfate attack. After 20 drying-wetting cycles, the MPFRC exhibited the highest compressive strength; the SO42- concentration of the double-doped polypropylene fiber-reinforced concrete and MPFRC at 18 mm depth were 9.07% and 9.52% lower than those of the plain concrete and single-doped polypropylene fiber-reinforced concrete, respectively. The SO42- concentration distribution model could well describe the SO42- concentration distribution characteristics of the PFRC under one-dimensional sulfate attack. The diffusion coefficients (D) of the double-doped polypropylene fiber-reinforced concrete and MPFRC were 30.0% and 47.7% lower than that of plain concrete, respectively. Thus, among the concrete specimens used in this study, the MPFRC showed the best performance in terms of corrosion resistance. |
| first_indexed | 2024-04-13T17:58:44Z |
| format | Article |
| id | doaj.art-45204012a0a9480cac145d63a03690a3 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-13T17:58:44Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-45204012a0a9480cac145d63a03690a32022-12-22T02:36:20ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e01065Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attackNinghui Liang0Jinwang Mao1Ru Yan2Xinrong Liu3Xiaohan Zhou4School of Civil Engineering, Chongqing University, Chongqing 400045, China; National Joint Engineering Research Center for Prevention and Control of Environmental Geological Hazards in the TGR Area, Chongqing University, Chongqing 400045, China; Corresponding author at: School of Civil Engineering, Chongqing University, Chongqing 400045, China.School of Civil Engineering, Chongqing University, Chongqing 400045, China; National Joint Engineering Research Center for Prevention and Control of Environmental Geological Hazards in the TGR Area, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, China; PowerChina Chengdu Engineering Corporation Limited, Chengdu, Sichuan 610072, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, China; National Joint Engineering Research Center for Prevention and Control of Environmental Geological Hazards in the TGR Area, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, China; National Joint Engineering Research Center for Prevention and Control of Environmental Geological Hazards in the TGR Area, Chongqing University, Chongqing 400045, ChinaTo study the corrosion resistance properties of multiscale polypropylene fiber-reinforced concrete (MPFRC) when subjected to sulfate attack, two types of fine polypropylene fiber (FPF) and one type of coarse polypropylene fiber (CPF) were selected for single doping or hybridization into concrete. A sodium sulfate solution (10 wt%) was used in the sulfate attack drying-wetting cycle. A one-dimensional SO42- concentration distribution model was established. The corrosion resistance mechanism of polypropylene fiber-reinforced concrete (PFRC) was revealed based on concrete compressive strength tests, ion concentration tests, and micro tests under different sulfate attack ages. The results showed that PFRC maintained its integrity even after being subjected to sulfate attack. After 20 drying-wetting cycles, the MPFRC exhibited the highest compressive strength; the SO42- concentration of the double-doped polypropylene fiber-reinforced concrete and MPFRC at 18 mm depth were 9.07% and 9.52% lower than those of the plain concrete and single-doped polypropylene fiber-reinforced concrete, respectively. The SO42- concentration distribution model could well describe the SO42- concentration distribution characteristics of the PFRC under one-dimensional sulfate attack. The diffusion coefficients (D) of the double-doped polypropylene fiber-reinforced concrete and MPFRC were 30.0% and 47.7% lower than that of plain concrete, respectively. Thus, among the concrete specimens used in this study, the MPFRC showed the best performance in terms of corrosion resistance.http://www.sciencedirect.com/science/article/pii/S2214509522001978Multiscale polypropylene fiber-reinforced concreteSulfate attackDrying-wetting cycleOne-dimensional corrosionCorrosion resistance mechanism |
| spellingShingle | Ninghui Liang Jinwang Mao Ru Yan Xinrong Liu Xiaohan Zhou Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack Case Studies in Construction Materials Multiscale polypropylene fiber-reinforced concrete Sulfate attack Drying-wetting cycle One-dimensional corrosion Corrosion resistance mechanism |
| title | Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack |
| title_full | Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack |
| title_fullStr | Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack |
| title_full_unstemmed | Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack |
| title_short | Corrosion resistance of multiscale polypropylene fiber-reinforced concrete under sulfate attack |
| title_sort | corrosion resistance of multiscale polypropylene fiber reinforced concrete under sulfate attack |
| topic | Multiscale polypropylene fiber-reinforced concrete Sulfate attack Drying-wetting cycle One-dimensional corrosion Corrosion resistance mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522001978 |
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