Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design
The influence of coal fly ash and glass fiber waste on the tensile strength of cement concrete was studied using central composite design. Coal fly ash was used to replace 10% of the cement in the concrete mix. Glass fiber was added to improve the tensile properties of the concrete in different dosa...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/486232 |
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| author | Marinela Barbuta Emanuela Marin Sorin Mihai Cimpeanu Gigel Paraschiv Daniel Lepadatu Roxana Dana Bucur |
| author_facet | Marinela Barbuta Emanuela Marin Sorin Mihai Cimpeanu Gigel Paraschiv Daniel Lepadatu Roxana Dana Bucur |
| author_sort | Marinela Barbuta |
| collection | DOAJ |
| description | The influence of coal fly ash and glass fiber waste on the tensile strength of cement concrete was studied using central composite design. Coal fly ash was used to replace 10% of the cement in the concrete mix. Glass fiber was added to improve the tensile properties of the concrete in different dosages and lengths. In total, 14 mixes were investigated, one only with 10% coal fly ash replacement of cement and the other thirteen were determined by the experimental design. Using analysis of variance, the order of importance of the variables was established for each property (flexural strength and split tensile strength). From the nonlinear response surfaces, it was found that higher values of flexural strength were obtained for fibers longer than 12 mm and at a dosage of 1-2%. For split tensile strength, higher values were obtained for fibers with a length of 19–28 mm and at a dosage of 1–1.5%. |
| format | Article |
| id | doaj-art-f3f8d4e92ea24ab78295a9faf10ec70f |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-f3f8d4e92ea24ab78295a9faf10ec70f2025-02-03T05:44:53ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/486232486232Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite DesignMarinela Barbuta0Emanuela Marin1Sorin Mihai Cimpeanu2Gigel Paraschiv3Daniel Lepadatu4Roxana Dana Bucur5Department of Concrete Structures and Building Materials, Technical University in Iasi, 43 Mangeron Boulevard, 700050 Iasi, RomaniaFaculty of Textile, Leather Engineering and Industrial Management, Technical University in Iasi, 29 Mangeron Boulevard, 700050 Iasi, RomaniaDepartment of Environmental and Land Improvements, University of Agronomical Sciences and Veterinary Medicine in Bucharest, Marasti 59, 011464 Bucharest, RomaniaDepartment of Materials Engineering, University Politehnica in Bucharest, 313 Independentei, 060042 Bucharest, RomaniaDepartment of Concrete Structures and Building Materials, Technical University in Iasi, 43 Mangeron Boulevard, 700050 Iasi, RomaniaLivestock Building Department, University of Agricultural Sciences and Veterinary Medicine in Iasi, 3 Sadoveanu, 700490 Iasi, RomaniaThe influence of coal fly ash and glass fiber waste on the tensile strength of cement concrete was studied using central composite design. Coal fly ash was used to replace 10% of the cement in the concrete mix. Glass fiber was added to improve the tensile properties of the concrete in different dosages and lengths. In total, 14 mixes were investigated, one only with 10% coal fly ash replacement of cement and the other thirteen were determined by the experimental design. Using analysis of variance, the order of importance of the variables was established for each property (flexural strength and split tensile strength). From the nonlinear response surfaces, it was found that higher values of flexural strength were obtained for fibers longer than 12 mm and at a dosage of 1-2%. For split tensile strength, higher values were obtained for fibers with a length of 19–28 mm and at a dosage of 1–1.5%.http://dx.doi.org/10.1155/2015/486232 |
| spellingShingle | Marinela Barbuta Emanuela Marin Sorin Mihai Cimpeanu Gigel Paraschiv Daniel Lepadatu Roxana Dana Bucur Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design Advances in Materials Science and Engineering |
| title | Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design |
| title_full | Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design |
| title_fullStr | Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design |
| title_full_unstemmed | Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design |
| title_short | Statistical Analysis of the Tensile Strength of Coal Fly Ash Concrete with Fibers Using Central Composite Design |
| title_sort | statistical analysis of the tensile strength of coal fly ash concrete with fibers using central composite design |
| url | http://dx.doi.org/10.1155/2015/486232 |
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