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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental and numerical study on tensile behavior of surface modified PVA fiber reinforced strain-hardening cementitious composites (PVA-SHCC)
Highlights Domestic PVA fibers were treated with an oiling agent for surface modification. The oil coating on domestic fiber can adjust the interface to achieve fiber pullout. Study on single fiber pullout and tensile strength behavior of PVA SHCC. Interfacial parameters were reduced by 42–61% after treatment. Treatment showed increase in tensile strain-hardening and multiple cracking.
Abstract Strain-hardening cementitious composites (SHCC) are a special class of high-performance fiber reinforced cementitious composites developed with 2% fiber content or lower. In order to promote the wider applications of SHCC in China, the domestic PVA fibers were treated with an oiling agent. The fiber-matrix interfacial properties were tailored to meet the micromechanics-based design requirements for strain-hardening and saturated multiple-cracking. The single fiber pull-out tests were conducted to study the interfacial behavior and tensile test was carried out to analyze the effects of treatment on the composite level. Oiling treatment has shown considerable improvement in modifying the interfacial properties for chemical debonding energy and frictional bond value respectively. In addition, finite element analysis for single fiber pull-out behavior has also showed good agreement with the experimental results. Moreover, the oil treated PVA fiber uniaxial tensile test results demonstrated significant improvement in mechanical performance with satisfactory strain-hardening in comparison with untreated composite. The present study suggests that the surface modified domestic PVA fibers could be feasible to produce cost-effective SHCC.
Experimental and numerical study on tensile behavior of surface modified PVA fiber reinforced strain-hardening cementitious composites (PVA-SHCC)
Highlights Domestic PVA fibers were treated with an oiling agent for surface modification. The oil coating on domestic fiber can adjust the interface to achieve fiber pullout. Study on single fiber pullout and tensile strength behavior of PVA SHCC. Interfacial parameters were reduced by 42–61% after treatment. Treatment showed increase in tensile strain-hardening and multiple cracking.
Abstract Strain-hardening cementitious composites (SHCC) are a special class of high-performance fiber reinforced cementitious composites developed with 2% fiber content or lower. In order to promote the wider applications of SHCC in China, the domestic PVA fibers were treated with an oiling agent. The fiber-matrix interfacial properties were tailored to meet the micromechanics-based design requirements for strain-hardening and saturated multiple-cracking. The single fiber pull-out tests were conducted to study the interfacial behavior and tensile test was carried out to analyze the effects of treatment on the composite level. Oiling treatment has shown considerable improvement in modifying the interfacial properties for chemical debonding energy and frictional bond value respectively. In addition, finite element analysis for single fiber pull-out behavior has also showed good agreement with the experimental results. Moreover, the oil treated PVA fiber uniaxial tensile test results demonstrated significant improvement in mechanical performance with satisfactory strain-hardening in comparison with untreated composite. The present study suggests that the surface modified domestic PVA fibers could be feasible to produce cost-effective SHCC.
Experimental and numerical study on tensile behavior of surface modified PVA fiber reinforced strain-hardening cementitious composites (PVA-SHCC)
Arain, Muhammad Fahad (Autor:in) / Wang, Mingxue (Autor:in) / Chen, Jianyong (Autor:in) / Zhang, Huapeng (Autor:in)
Construction and Building Materials ; 217 ; 403-415
11.05.2019
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Study on PVA fiber surface modification for strain-hardening cementitious composites (PVA-SHCC)
| British Library Online Contents | 2019
| British Library Online Contents | 2012
Performance Research of Strain Hardening Cementitious Composites (SHCC) under Uniaxial Tensile Load
| British Library Conference Proceedings | 2011