Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete
Steel fiber reinforced concrete (SFRC) has gained popularity in the last decades attributed to the improvement of brittleness and low tensile strength of concrete. This study investigates the effect of three shapes of steel fibers (straight, hooked end, and corrugated) with four contents (0.5%, 1%,...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8834507 |
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| author | Lijuan Zhang Jun Zhao Cunyuan Fan Zhi Wang |
| author_facet | Lijuan Zhang Jun Zhao Cunyuan Fan Zhi Wang |
| author_sort | Lijuan Zhang |
| collection | DOAJ |
| description | Steel fiber reinforced concrete (SFRC) has gained popularity in the last decades attributed to the improvement of brittleness and low tensile strength of concrete. This study investigates the effect of three shapes of steel fibers (straight, hooked end, and corrugated) with four contents (0.5%, 1%, 1.5%, and 2%) on the mechanical properties (compression, splitting tension, shear, and flexure) of concrete. Thirteen groups of concrete were prepared and investigated experimentally. Test results indicated that steel fiber had significant reinforcement on mechanical properties of concrete. When the steel fiber content increases from 0.5% to 2.0%, the compressive strengths increase about 4–24%, splitting tensile strengths increase about 33–122%, shear strengths increase about 31–79%, and flexural strengths increase about 25–111%. Corrugated steel fiber has the best reinforced effect on strength of SFRC, hooked end steel fiber takes the second place, and straight steel fiber is the least. Calculated formulas of compressive, splitting tensile, shear, and flexural strengths were established with consideration of the bonding properties between concrete and steel fiber. Influence factors of steel fiber αf and concrete matrix strength αc were put forward and determined by regression analysis of experimental data. Calculated results agree well with the experimental results. |
| format | Article |
| id | doaj-art-f067a1314a7e40da9e3179bd9047b0a3 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-f067a1314a7e40da9e3179bd9047b0a32025-02-03T05:49:53ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88345078834507Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of ConcreteLijuan Zhang0Jun Zhao1Cunyuan Fan2Zhi Wang3School of Mechanics and Safety Engineering, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, Henan, ChinaSchool of Mechanics and Safety Engineering, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, Henan, ChinaSchool of Civil Engineering, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, Henan, ChinaSchool of Mechanics and Safety Engineering, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, Henan, ChinaSteel fiber reinforced concrete (SFRC) has gained popularity in the last decades attributed to the improvement of brittleness and low tensile strength of concrete. This study investigates the effect of three shapes of steel fibers (straight, hooked end, and corrugated) with four contents (0.5%, 1%, 1.5%, and 2%) on the mechanical properties (compression, splitting tension, shear, and flexure) of concrete. Thirteen groups of concrete were prepared and investigated experimentally. Test results indicated that steel fiber had significant reinforcement on mechanical properties of concrete. When the steel fiber content increases from 0.5% to 2.0%, the compressive strengths increase about 4–24%, splitting tensile strengths increase about 33–122%, shear strengths increase about 31–79%, and flexural strengths increase about 25–111%. Corrugated steel fiber has the best reinforced effect on strength of SFRC, hooked end steel fiber takes the second place, and straight steel fiber is the least. Calculated formulas of compressive, splitting tensile, shear, and flexural strengths were established with consideration of the bonding properties between concrete and steel fiber. Influence factors of steel fiber αf and concrete matrix strength αc were put forward and determined by regression analysis of experimental data. Calculated results agree well with the experimental results.http://dx.doi.org/10.1155/2020/8834507 |
| spellingShingle | Lijuan Zhang Jun Zhao Cunyuan Fan Zhi Wang Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete Advances in Civil Engineering |
| title | Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete |
| title_full | Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete |
| title_fullStr | Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete |
| title_full_unstemmed | Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete |
| title_short | Effect of Surface Shape and Content of Steel Fiber on Mechanical Properties of Concrete |
| title_sort | effect of surface shape and content of steel fiber on mechanical properties of concrete |
| url | http://dx.doi.org/10.1155/2020/8834507 |
| work_keys_str_mv | AT lijuanzhang effectofsurfaceshapeandcontentofsteelfiberonmechanicalpropertiesofconcrete AT junzhao effectofsurfaceshapeandcontentofsteelfiberonmechanicalpropertiesofconcrete AT cunyuanfan effectofsurfaceshapeandcontentofsteelfiberonmechanicalpropertiesofconcrete AT zhiwang effectofsurfaceshapeandcontentofsteelfiberonmechanicalpropertiesofconcrete |