The reinforcement effects of PVA, PE, and steel fibers on AAS material
This paper employs PVA, PE, steel fibers, as well as the hybrids of two of the three fibers to reinforce alkali-activated slag (AAS) material, aiming to prepare strain-hardening and clinker-free composites. The flexural strength, compressive strength, uniaxial tensile performance of the composites a...
| Main Authors: | , , , |
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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/S2214509522005186 |
| _version_ | 1811309708886147072 |
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| author | Yaowen Xu Chaojun Wan Xuhui Liang Hongyu Yang |
| author_facet | Yaowen Xu Chaojun Wan Xuhui Liang Hongyu Yang |
| author_sort | Yaowen Xu |
| collection | DOAJ |
| description | This paper employs PVA, PE, steel fibers, as well as the hybrids of two of the three fibers to reinforce alkali-activated slag (AAS) material, aiming to prepare strain-hardening and clinker-free composites. The flexural strength, compressive strength, uniaxial tensile performance of the composites and bond behavior between fibers and the matrix were tested to clarify the reinforcement effects of different fibers on the matrix. Strain-hardening AAS materials are obtained with compressive strengths of 116 MPa − 137 MPa (with fibers contributions of 17%−38%) and strain capacities over 0.8% at 60 d. The results indicate that there are several kinds of reinforcement effects of fibers on the matrix, namely bridging effect, lapping effect (for steel fibers), synergetic effect (for hybrid fibers) and static effect (for flexible fibers). Deterioration of PVA and PE fibers are found, indicating that these two fibers have poor adaptability in AAS material with a high alkalinity. This paper specially distinguishes the difference of the crack numbers during the strain-hardening stage only with the ones during the whole period including the following strain-softening stage. A new relationship is established between the crack numbers and the strain-stress curves, which provides a more reasonable way to characterize the strain-hardening property of fiber-reinforced composites. |
| first_indexed | 2024-04-13T09:46:09Z |
| format | Article |
| id | doaj.art-e727fa739f0f49adbb9d1dddb75f9fca |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-13T09:46:09Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-e727fa739f0f49adbb9d1dddb75f9fca2022-12-22T02:51:45ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01386The reinforcement effects of PVA, PE, and steel fibers on AAS materialYaowen Xu0Chaojun Wan1Xuhui Liang2Hongyu Yang3College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China; Corresponding authors.Department of Materials, Mechanics, Management & Design, Faculty of Civil Engineering and Geoscience, Delft University of Technology, Delft, the Netherlands; Corresponding authors.College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR ChinaThis paper employs PVA, PE, steel fibers, as well as the hybrids of two of the three fibers to reinforce alkali-activated slag (AAS) material, aiming to prepare strain-hardening and clinker-free composites. The flexural strength, compressive strength, uniaxial tensile performance of the composites and bond behavior between fibers and the matrix were tested to clarify the reinforcement effects of different fibers on the matrix. Strain-hardening AAS materials are obtained with compressive strengths of 116 MPa − 137 MPa (with fibers contributions of 17%−38%) and strain capacities over 0.8% at 60 d. The results indicate that there are several kinds of reinforcement effects of fibers on the matrix, namely bridging effect, lapping effect (for steel fibers), synergetic effect (for hybrid fibers) and static effect (for flexible fibers). Deterioration of PVA and PE fibers are found, indicating that these two fibers have poor adaptability in AAS material with a high alkalinity. This paper specially distinguishes the difference of the crack numbers during the strain-hardening stage only with the ones during the whole period including the following strain-softening stage. A new relationship is established between the crack numbers and the strain-stress curves, which provides a more reasonable way to characterize the strain-hardening property of fiber-reinforced composites.http://www.sciencedirect.com/science/article/pii/S2214509522005186Fiber-reinforced AASHybrid fiberStrain-hardeningCrackUniaxial tension |
| spellingShingle | Yaowen Xu Chaojun Wan Xuhui Liang Hongyu Yang The reinforcement effects of PVA, PE, and steel fibers on AAS material Case Studies in Construction Materials Fiber-reinforced AAS Hybrid fiber Strain-hardening Crack Uniaxial tension |
| title | The reinforcement effects of PVA, PE, and steel fibers on AAS material |
| title_full | The reinforcement effects of PVA, PE, and steel fibers on AAS material |
| title_fullStr | The reinforcement effects of PVA, PE, and steel fibers on AAS material |
| title_full_unstemmed | The reinforcement effects of PVA, PE, and steel fibers on AAS material |
| title_short | The reinforcement effects of PVA, PE, and steel fibers on AAS material |
| title_sort | reinforcement effects of pva pe and steel fibers on aas material |
| topic | Fiber-reinforced AAS Hybrid fiber Strain-hardening Crack Uniaxial tension |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522005186 |
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