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Influence of permeable formwork on the performance of polypropylene fibre reinforced concrete

Influence of permeable formwork on the performance of polypropylene fibre reinforced concrete Controlled permeability formwork liner (CPF) is a novel approach for improving the quality of the concrete cover zone. This method is used to keep tiny cement and sand particles in place while removing excess water and trapped air from the surface of freshly laid concrete. The impact of polypropylene fibre (PPF) on CPF liner concrete was explored in this research. The concrete samples were prepared against conventional or impermeable formwork (IMF), CPF, and CPF with various percentages (0.5, 1.0, 1.5, and 2.0) of polypropylene fibre. The surface morphology, compressive strength, split tensile strength, flexural strength, rebound number, dynamic hardness, Rockwell hardness and water absorption test were observed at numerous ages. Results were interesting, as in the CPF concrete with 1.5% PPF, the split tensile strength, flexural tensile strength, rebound number, and dynamic hardness were significantly improved at a range of 46, 45, 66, and 67%, respectively. Furthermore, an improvement of 36% was observed in the water absorption test. The performance of CPF concrete with polypropylene fibre at 2.0% was reduced. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Influence of permeable formwork on the performance of polypropylene fibre reinforced concrete

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Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-023-00278-2
Publisher site
See Article on Publisher Site

Abstract

Controlled permeability formwork liner (CPF) is a novel approach for improving the quality of the concrete cover zone. This method is used to keep tiny cement and sand particles in place while removing excess water and trapped air from the surface of freshly laid concrete. The impact of polypropylene fibre (PPF) on CPF liner concrete was explored in this research. The concrete samples were prepared against conventional or impermeable formwork (IMF), CPF, and CPF with various percentages (0.5, 1.0, 1.5, and 2.0) of polypropylene fibre. The surface morphology, compressive strength, split tensile strength, flexural strength, rebound number, dynamic hardness, Rockwell hardness and water absorption test were observed at numerous ages. Results were interesting, as in the CPF concrete with 1.5% PPF, the split tensile strength, flexural tensile strength, rebound number, and dynamic hardness were significantly improved at a range of 46, 45, 66, and 67%, respectively. Furthermore, an improvement of 36% was observed in the water absorption test. The performance of CPF concrete with polypropylene fibre at 2.0% was reduced.

Journal

Journal of Building Pathology and RehabilitationSpringer Journals

Published: Jun 1, 2023

Keywords: Concrete cover quality; Polypropylene fibre; Controlled permeable formwork; Superficial rockwell hardness; Dynamic hardness; Rebound number; Splitting tensile strength

References