UNIVERSITAS BINA DARMA, UNIVERSITAS BINA DARMA (2022) Influence of Micro Steel and Polypropylene Fibres on the Dynamic Properties and Porosity of Ultra High Performance Concrete. Influence of Micro Steel and Polypropylene Fibres on the Dynamic Properties and Porosity of Ultra High Performance Concrete.
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Abstract
Ultra-high Performance Concrete (UHPC) is a special type of concrete with extraordinary potentials in terms of strength and durability performance. This paper aims to determine the dynamic properties and porosity of fibre reinforced UHPC (FRUHPC). Two types of fibres were used: micro steel (MS) and polypropylene (PP) fibres, with three volume fractions of 0.5%, 0.75% and 1.0%. A total of 54 specimens were prepared and tested after 28 days of wet curing for static compression and flexural strengths; dynamic stress and strain; and porosity. The dynamic properties were determined using split Hopkinson pressure bar (SHPB) and porosity by mercury intrusion porosimeter (MIP). The optimum static compressive strength of UHPC is at 0.75% PP fibre inclusion at 150.2 MPa. UHPC with 1.0% MS fibre inclusion exhibits highest flexural strength at 14.2 MPa. PP fibre reinforced UHPC recorded highest value of pore at 15.51% compares to normal UHPC. The ultimate dynamic stresses are between 140 – 160 MPa, ultimate dynamic strains between 0.0006 – 0.002 mm/mm and the ultimate strain rates in the range of 100 s -1 and 230 s-1. The highest DIF value is 1.34 for 5% MS fibre reinforced UHPC
| Item Type: | Article |
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| Subjects: | L Education > L Education (General) |
| Divisions: | Faculty of Law, Arts and Social Sciences > School of Education |
| Depositing User: | Mr Edi Surya Negara |
| Date Deposited: | 23 Jun 2022 02:01 |
| Last Modified: | 23 Jun 2022 02:01 |
| URI: | http://eprints.binadarma.ac.id/id/eprint/14523 |
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