Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete
Mechanical properties, workability and pore structures of foamed concrete (FC) reinforced with different fibres were investigated. In order to characterise the cementitious matrix with entrained bubbles and fibres, X-ray computed tomography (X-CT) technology and Digital image correlation (DIC) techn...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-06-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522001474 |
| _version_ | 1818535950554234880 |
|---|---|
| author | Xinyu Cong Tairui Qiu Jiquan Xu Xinqing Liu Liqing Wang Yongfeng Wang Changming Chen Liting Zhao Chao Xing Yiqiu Tan |
| author_facet | Xinyu Cong Tairui Qiu Jiquan Xu Xinqing Liu Liqing Wang Yongfeng Wang Changming Chen Liting Zhao Chao Xing Yiqiu Tan |
| author_sort | Xinyu Cong |
| collection | DOAJ |
| description | Mechanical properties, workability and pore structures of foamed concrete (FC) reinforced with different fibres were investigated. In order to characterise the cementitious matrix with entrained bubbles and fibres, X-ray computed tomography (X-CT) technology and Digital image correlation (DIC) technique were employed to analyse the pore structure and the real-time strain field distributions under applied loads, respectively. The results demonstrated that the inherent properties of fibres, including density, modulus and wettability, and bond performance between the cement matrix and fibres are two main factors in determining the mechanical properties of the fibre reinforced FC. Meanwhile, the fibres also had an influence on the workability and rheological properties of fresh FC slurry through changing the bubble numbers and distributions in the slurry. According to the strain analysis during the bending tests using the DIC technique, it was found that carbon fibre and polyacrylonitrile fibre were conducive to distributing the strain field in the FC in a homogeneous fashion and delayed crack widening after the peak loads effectively. |
| first_indexed | 2024-12-11T18:31:42Z |
| format | Article |
| id | doaj.art-8404e051a6fd49e8a6f996869be30a3e |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-11T18:31:42Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-8404e051a6fd49e8a6f996869be30a3e2022-12-22T00:54:53ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e01015Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concreteXinyu Cong0Tairui Qiu1Jiquan Xu2Xinqing Liu3Liqing Wang4Yongfeng Wang5Changming Chen6Liting Zhao7Chao Xing8Yiqiu Tan9School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, ChinaSchool of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, ChinaSichuan Gezhouba Batongwan Expressway Co., Ltd., Bazhong, ChinaSichuan Gezhouba Batongwan Expressway Co., Ltd., Bazhong, ChinaSichuan Gezhouba Batongwan Expressway Co., Ltd., Bazhong, ChinaCCCC NO. 1 Highway Survey Design & Research Institute Co., Ltd., Xian, ChinaCCCC NO. 1 Highway Survey Design & Research Institute Co., Ltd., Xian, ChinaCCCC NO. 1 Highway Survey Design & Research Institute Co., Ltd., Xian, ChinaSchool of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China; Correspondence to: School of Transportation Science and Engineering, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, Heilongjiang, China.School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, ChinaMechanical properties, workability and pore structures of foamed concrete (FC) reinforced with different fibres were investigated. In order to characterise the cementitious matrix with entrained bubbles and fibres, X-ray computed tomography (X-CT) technology and Digital image correlation (DIC) technique were employed to analyse the pore structure and the real-time strain field distributions under applied loads, respectively. The results demonstrated that the inherent properties of fibres, including density, modulus and wettability, and bond performance between the cement matrix and fibres are two main factors in determining the mechanical properties of the fibre reinforced FC. Meanwhile, the fibres also had an influence on the workability and rheological properties of fresh FC slurry through changing the bubble numbers and distributions in the slurry. According to the strain analysis during the bending tests using the DIC technique, it was found that carbon fibre and polyacrylonitrile fibre were conducive to distributing the strain field in the FC in a homogeneous fashion and delayed crack widening after the peak loads effectively.http://www.sciencedirect.com/science/article/pii/S2214509522001474Foamed concreteFibre reinforcementMechanical propertiesPore structureStrain field distribution |
| spellingShingle | Xinyu Cong Tairui Qiu Jiquan Xu Xinqing Liu Liqing Wang Yongfeng Wang Changming Chen Liting Zhao Chao Xing Yiqiu Tan Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete Case Studies in Construction Materials Foamed concrete Fibre reinforcement Mechanical properties Pore structure Strain field distribution |
| title | Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete |
| title_full | Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete |
| title_fullStr | Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete |
| title_full_unstemmed | Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete |
| title_short | Study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete |
| title_sort | study on the effectiveness of fibre reinforcement on the engineering performance of foamed concrete |
| topic | Foamed concrete Fibre reinforcement Mechanical properties Pore structure Strain field distribution |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522001474 |
| work_keys_str_mv | AT xinyucong studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT tairuiqiu studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT jiquanxu studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT xinqingliu studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT liqingwang studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT yongfengwang studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT changmingchen studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT litingzhao studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT chaoxing studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete AT yiqiutan studyontheeffectivenessoffibrereinforcementontheengineeringperformanceoffoamedconcrete |