International Journal of Advanced Studies in Computer Science and Engineering

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Experimental and numerical investigation of the workability and mechanical properties of High-performance fiber-reinforced fluid concrete (HPFRFC)


Affiliations
1 Mechanical and Materials Development Laboratory, University of Djelfa, Djelfa, Algeria
2 LME Laboratory, University of Medea, Medea, Algeria

In this study, workability and mechanical properties of fluid High-performance concrete containing metal fibers have been investigated experimentally and numerically. A total of 13 mixtures investigated using a response surface (RSM) method. The input variables in the mixtures are the superplasticizer (SP) and metal fibers (MF) percentages. The percentage in SP takes as extreme levels 1.80% and 2.4%. The metal fibers quantity in the concrete ranging from 23 kg/m3 to 37 kg/m3. The slump flow was used to evaluate the rheological properties of mixture at fresh state. For the mechanical characterization, compressive and flexural strength tests were used in the hardened state. The obtained results show that the metal fibers reduce the workability of HPFC mixtures and improve their mechanical properties, especially the ductility. The slump flow (spreading) diameter of all mixtures varied between 400 mm and 580 mm, indicating a good deformability and mobility. Compressive and flexural strength ranged from 82 to 97 MPa and 4.5 to 7.53 MPa, respectively. The ductility was conferred on the HPFRFC composites, while the brittle failure is replaced by a ductile failure. Moreover, the numerical results show that HPFRFC can be produced based on optimized application of superplasticizer and metal fiber content. The optimization results indicate that with 30 Kg/m3 fibers and 2.4% superplasticizer, the maximum 28-day compressive and flexural strength are obtained, while meeting EFNARC workability indicators. This study proved that it is possible to suitably produce a dense and workable HPFRFC that are much thinner, slenderer, lighter, more durable and low cost-effective for practical application.
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  • Experimental and numerical investigation of the workability and mechanical properties of High-performance fiber-reinforced fluid concrete (HPFRFC)

Abstract Views: 171  | 

Authors

Laid Guermiti
Mechanical and Materials Development Laboratory, University of Djelfa, Djelfa, Algeria
Dalila Benamara
Mechanical and Materials Development Laboratory, University of Djelfa, Djelfa, Algeria
Mohamed Guendouz
LME Laboratory, University of Medea, Medea, Algeria

Abstract


In this study, workability and mechanical properties of fluid High-performance concrete containing metal fibers have been investigated experimentally and numerically. A total of 13 mixtures investigated using a response surface (RSM) method. The input variables in the mixtures are the superplasticizer (SP) and metal fibers (MF) percentages. The percentage in SP takes as extreme levels 1.80% and 2.4%. The metal fibers quantity in the concrete ranging from 23 kg/m3 to 37 kg/m3. The slump flow was used to evaluate the rheological properties of mixture at fresh state. For the mechanical characterization, compressive and flexural strength tests were used in the hardened state. The obtained results show that the metal fibers reduce the workability of HPFC mixtures and improve their mechanical properties, especially the ductility. The slump flow (spreading) diameter of all mixtures varied between 400 mm and 580 mm, indicating a good deformability and mobility. Compressive and flexural strength ranged from 82 to 97 MPa and 4.5 to 7.53 MPa, respectively. The ductility was conferred on the HPFRFC composites, while the brittle failure is replaced by a ductile failure. Moreover, the numerical results show that HPFRFC can be produced based on optimized application of superplasticizer and metal fiber content. The optimization results indicate that with 30 Kg/m3 fibers and 2.4% superplasticizer, the maximum 28-day compressive and flexural strength are obtained, while meeting EFNARC workability indicators. This study proved that it is possible to suitably produce a dense and workable HPFRFC that are much thinner, slenderer, lighter, more durable and low cost-effective for practical application.