Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials
With the development of fiber-reinforced cement composites, the diversity and complexity of application scenarios require enhanced strength and ductility and tough materials in practical engineering. To explore the effects of different water-binder ratios and fiber contents on the fluidity, bending...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek
2023-01-01
|
| Series: | Tehnički Vjesnik |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/444158 |
| _version_ | 1797206407098925056 |
|---|---|
| author | Qin Xin Ruyu Gao Pengtao Shao Wenbo Lv Hao Wei |
| author_facet | Qin Xin Ruyu Gao Pengtao Shao Wenbo Lv Hao Wei |
| author_sort | Qin Xin |
| collection | DOAJ |
| description | With the development of fiber-reinforced cement composites, the diversity and complexity of application scenarios require enhanced strength and ductility and tough materials in practical engineering. To explore the effects of different water-binder ratios and fiber contents on the fluidity, bending resistance, tensile properties, fracture toughness, and fracture behavior of polyvinyl alcohol (PVA) fiber cement composites, several groups of high ductility test blocks (PVA-engineering cementitious composites (ECC)) with different mixing ratios were designed in this study. Based on the expansion degree, the mechanical experimental data, and the electron microscopy scanning image results, K-value analysis was performed on the strain hardening strength criterion. The effect of the water–binder ratio and the fiber dosing on the PVA-ECC material was determined. Results show that the greater the water-binder ratio is, the better the fluidity of the ECC matrix is. In the same cement system and at the same water-binder ratio, the fluidity of the ECC paste gradually deteriorates with the increase of the fiber content. The water-binder ratio significantly affects the flexural tensile strength of the composite. The flexural and tensile strengths of the PVA-ECC gradually increase as the water-binder ratio decreases, but the ductility gradually decreases. The water-binder ratio of the substrate directly influences the damage behavior of the fibers within the substrate. With the gradual increase of the water-binder ratio, the fiber at the crack interface gradually changes from pull-out morphology to fracture morphology. The strain capacity and the multi-crack cracking performance decrease. To achieve improved working performance in the actual project, the matrix water-binder ratio should be controlled at approximately 0.45, and the PVA fiber dose of 1.7% is optimal. This study can provide a good reference for the optimization of practical engineering components. |
| first_indexed | 2024-04-24T09:06:31Z |
| format | Article |
| id | doaj.art-bec2ea02a05f4e9298b9caa2044b773a |
| institution | Directory Open Access Journal |
| issn | 1330-3651 1848-6339 |
| language | English |
| last_indexed | 2024-04-24T09:06:31Z |
| publishDate | 2023-01-01 |
| publisher | Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek |
| record_format | Article |
| series | Tehnički Vjesnik |
| spelling | doaj.art-bec2ea02a05f4e9298b9caa2044b773a2024-04-15T18:51:44ZengFaculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in OsijekTehnički Vjesnik1330-36511848-63392023-01-013051366137210.17559/TV-20230426000576Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC MaterialsQin Xin0Ruyu Gao1Pengtao Shao2Wenbo Lv3Hao Wei4(1) College of Civil Engineering and Architecture, Hebei University, No. 180, Wusi East Road, 071002 Baoding, Hebei Province, China (2) Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, China (3) Hebei University of Technology Civil Engineering Postdoctoral Mobile Station, ChinaCollege of Civil Engineering and Architecture, Hebei University, China No. 2666 QiYi Road, Baoding County, Hebei Province, ChinaCollege of Civil Engineering and Architecture, Hebei University, China No. 2666 QiYi Road, Baoding County, Hebei Province, ChinaCollege of Civil Engineering and Architecture, Hebei University, China No. 2666 QiYi Road, Baoding County, Hebei Province, ChinaCollege of Civil Engineering and Architecture, Hebei University, China No. 2666 QiYi Road, Baoding County, Hebei Province, ChinaWith the development of fiber-reinforced cement composites, the diversity and complexity of application scenarios require enhanced strength and ductility and tough materials in practical engineering. To explore the effects of different water-binder ratios and fiber contents on the fluidity, bending resistance, tensile properties, fracture toughness, and fracture behavior of polyvinyl alcohol (PVA) fiber cement composites, several groups of high ductility test blocks (PVA-engineering cementitious composites (ECC)) with different mixing ratios were designed in this study. Based on the expansion degree, the mechanical experimental data, and the electron microscopy scanning image results, K-value analysis was performed on the strain hardening strength criterion. The effect of the water–binder ratio and the fiber dosing on the PVA-ECC material was determined. Results show that the greater the water-binder ratio is, the better the fluidity of the ECC matrix is. In the same cement system and at the same water-binder ratio, the fluidity of the ECC paste gradually deteriorates with the increase of the fiber content. The water-binder ratio significantly affects the flexural tensile strength of the composite. The flexural and tensile strengths of the PVA-ECC gradually increase as the water-binder ratio decreases, but the ductility gradually decreases. The water-binder ratio of the substrate directly influences the damage behavior of the fibers within the substrate. With the gradual increase of the water-binder ratio, the fiber at the crack interface gradually changes from pull-out morphology to fracture morphology. The strain capacity and the multi-crack cracking performance decrease. To achieve improved working performance in the actual project, the matrix water-binder ratio should be controlled at approximately 0.45, and the PVA fiber dose of 1.7% is optimal. This study can provide a good reference for the optimization of practical engineering components.https://hrcak.srce.hr/file/444158fiber reinforced cement-based compositesfluiditymechanical propertiesPVA-ECC |
| spellingShingle | Qin Xin Ruyu Gao Pengtao Shao Wenbo Lv Hao Wei Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials Tehnički Vjesnik fiber reinforced cement-based composites fluidity mechanical properties PVA-ECC |
| title | Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials |
| title_full | Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials |
| title_fullStr | Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials |
| title_full_unstemmed | Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials |
| title_short | Effect of Different Water-Binder Ratios and Fiber Contents on the Fluidity and Mechanical Properties of PVA-ECC Materials |
| title_sort | effect of different water binder ratios and fiber contents on the fluidity and mechanical properties of pva ecc materials |
| topic | fiber reinforced cement-based composites fluidity mechanical properties PVA-ECC |
| url | https://hrcak.srce.hr/file/444158 |
| work_keys_str_mv | AT qinxin effectofdifferentwaterbinderratiosandfibercontentsonthefluidityandmechanicalpropertiesofpvaeccmaterials AT ruyugao effectofdifferentwaterbinderratiosandfibercontentsonthefluidityandmechanicalpropertiesofpvaeccmaterials AT pengtaoshao effectofdifferentwaterbinderratiosandfibercontentsonthefluidityandmechanicalpropertiesofpvaeccmaterials AT wenbolv effectofdifferentwaterbinderratiosandfibercontentsonthefluidityandmechanicalpropertiesofpvaeccmaterials AT haowei effectofdifferentwaterbinderratiosandfibercontentsonthefluidityandmechanicalpropertiesofpvaeccmaterials |