An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs
To improve the economic benefits of engineered cementitious composites and control the repair cycle, repair materials were designed, with the key components of the mixture being low-cost polypropylene (PP) fibers and fast-setting sulfoaluminate cement. The effects of water/binder ratio, fiber conten...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Built Environment |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fbuil.2023.1137569/full |
| _version_ | 1797833639912800256 |
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| author | Wen Xie Xuefeng Xu Chunlei Xu Chunlei Xu Feng Tian Qiwen Mao Helong Li Lin Liu Gongyi Qin |
| author_facet | Wen Xie Xuefeng Xu Chunlei Xu Chunlei Xu Feng Tian Qiwen Mao Helong Li Lin Liu Gongyi Qin |
| author_sort | Wen Xie |
| collection | DOAJ |
| description | To improve the economic benefits of engineered cementitious composites and control the repair cycle, repair materials were designed, with the key components of the mixture being low-cost polypropylene (PP) fibers and fast-setting sulfoaluminate cement. The effects of water/binder ratio, fiber content, and aggregate particle size on the flowability, mechanical properties, and toughness of the polypropylene fiber-reinforced sulfoaluminate cementitious composite (PP-SACC) were explored. Based on experimentally measured axial tensile stress–strain curves, a constitutive model of PP-SACC was derived in terms of fiber content and water/binder ratio. Additionally, the correlation coefficients representing the relationships of the mixture indices with the tensile properties were explored based on revised gray relational analysis. Test results indicated that fiber content and water/binder ratio were the most important factors affecting the mechanical properties, toughness, and fluidity of the material; in contrast, the influence of aggregate size was slight. The PP-SACC mixture with an aggregate size of 75 µm, a water/binder ratio of 0.30, and a fiber content of 3.0% demonstrated an excellent degree of toughness and exhibited a flexural hardening phenomenon under bending load. |
| first_indexed | 2024-04-09T14:26:22Z |
| format | Article |
| id | doaj.art-af24182a73f448488d32fd8b10a6013d |
| institution | Directory Open Access Journal |
| issn | 2297-3362 |
| language | English |
| last_indexed | 2024-04-09T14:26:22Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Built Environment |
| spelling | doaj.art-af24182a73f448488d32fd8b10a6013d2023-05-04T04:13:22ZengFrontiers Media S.A.Frontiers in Built Environment2297-33622023-05-01910.3389/fbuil.2023.11375691137569An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairsWen Xie0Xuefeng Xu1Chunlei Xu2Chunlei Xu3Feng Tian4Qiwen Mao5Helong Li6Lin Liu7Gongyi Qin8China Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaInstitute of Civil Engineering Materials, School of Civil Engineering, Southwest Jiaotong University, Chengdu, ChinaChina Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaInstitute of Civil Engineering Materials, School of Civil Engineering, Southwest Jiaotong University, Chengdu, ChinaChina Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaChina Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaChina Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaChina Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaChina Nuclear Industry Huachen Construction Engineering Co., Ltd., Xi’an, Shaanxi, ChinaTo improve the economic benefits of engineered cementitious composites and control the repair cycle, repair materials were designed, with the key components of the mixture being low-cost polypropylene (PP) fibers and fast-setting sulfoaluminate cement. The effects of water/binder ratio, fiber content, and aggregate particle size on the flowability, mechanical properties, and toughness of the polypropylene fiber-reinforced sulfoaluminate cementitious composite (PP-SACC) were explored. Based on experimentally measured axial tensile stress–strain curves, a constitutive model of PP-SACC was derived in terms of fiber content and water/binder ratio. Additionally, the correlation coefficients representing the relationships of the mixture indices with the tensile properties were explored based on revised gray relational analysis. Test results indicated that fiber content and water/binder ratio were the most important factors affecting the mechanical properties, toughness, and fluidity of the material; in contrast, the influence of aggregate size was slight. The PP-SACC mixture with an aggregate size of 75 µm, a water/binder ratio of 0.30, and a fiber content of 3.0% demonstrated an excellent degree of toughness and exhibited a flexural hardening phenomenon under bending load.https://www.frontiersin.org/articles/10.3389/fbuil.2023.1137569/fullPP fiber-reinforced sulfoaluminate cementitious compositeaxial tensile constitutive modeltensile strainmultiple cracksflexural toughness |
| spellingShingle | Wen Xie Xuefeng Xu Chunlei Xu Chunlei Xu Feng Tian Qiwen Mao Helong Li Lin Liu Gongyi Qin An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs Frontiers in Built Environment PP fiber-reinforced sulfoaluminate cementitious composite axial tensile constitutive model tensile strain multiple cracks flexural toughness |
| title | An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs |
| title_full | An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs |
| title_fullStr | An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs |
| title_full_unstemmed | An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs |
| title_short | An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs |
| title_sort | experimental study and axial tensile constitutive model of the toughness of pp sacc for rapid repairs |
| topic | PP fiber-reinforced sulfoaluminate cementitious composite axial tensile constitutive model tensile strain multiple cracks flexural toughness |
| url | https://www.frontiersin.org/articles/10.3389/fbuil.2023.1137569/full |
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