Ductility and strength of reinforced concrete beams intrinsically reinforced with polypropylene fibres

Ghosni, N; Samali, B; Vessalas, K

Ductility and strength of reinforced concrete beams intrinsically reinforced with polypropylene fibres

Ghosni, N Samali, B Vessalas, K

Permalink

Publication Type:: Conference Proceeding
Citation:: Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, 2013
Issue Date:: 2013-01-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Published versionAdobe PDF (146.02 kB)

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Ghosni, N	en_US
dc.contributor.author	Samali, B	en_US
dc.contributor.author	Vessalas, K https://orcid.org/0000-0003-3948-5212	en_US
dc.date.issued	2013-01-01	en_US
dc.identifier.citation	Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, 2013	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120780
dc.description.abstract	One of the horizons through which a more cost effective concrete can be conceived and be able to satisfy constructional requirements as well as modern society's demand, would be the Green Concrete concept. It has been for decades that sustainable design is drawn into direct attention of different sectors of society. From the structural point of view, the invaluable goal of this project is to improve the ductility of the concrete structural element which helps eliminate or reduce the need for steel reinforcement in concrete structures. Trend of improvement in human knowledge is promising and so far this project, like other projects with the same aim, is contributing to inevitable changes in the construction industry. Cracking in reinforced concrete causes stiffness reduction which is the reason for decreasing the capacity of the structure in bearing structural loadings. Concrete is a brittle material and its failure is mostly due to this characteristic. Different methods have been used to overcome this problem and give ductility to concrete matrix. Using short fibres like steel fibres or synthetic fibres and polymeric material is of attention to improve this behaviour of concrete. The effect of these additives is more on the post peak behaviour of concrete which improves the strain softening where tension is applied. Fibres within the matrix, can bridge the cracks which improves the performance of concrete matrix and results in a better stress bearing material. Different types and percentages of polypropylene fibres have been investigated for the mechanical properties of concrete. From among these mixes two best are selected and reinforced beams are casted to be tested under four point bending test. Results show that by using high percentage of PP fibre in the reinforced concrete beam, ductility can be improved by 160 %.	en_US
dc.relation.ispartof	Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013	en_US
dc.title	Ductility and strength of reinforced concrete beams intrinsically reinforced with polypropylene fibres	en_US
dc.type	Conference Proceeding
utslib.for	0905 Civil Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Provost
pubs.organisational-group	/University of Technology Sydney/Provost/Jumbunna
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

One of the horizons through which a more cost effective concrete can be conceived and be able to satisfy constructional requirements as well as modern society's demand, would be the Green Concrete concept. It has been for decades that sustainable design is drawn into direct attention of different sectors of society. From the structural point of view, the invaluable goal of this project is to improve the ductility of the concrete structural element which helps eliminate or reduce the need for steel reinforcement in concrete structures. Trend of improvement in human knowledge is promising and so far this project, like other projects with the same aim, is contributing to inevitable changes in the construction industry. Cracking in reinforced concrete causes stiffness reduction which is the reason for decreasing the capacity of the structure in bearing structural loadings. Concrete is a brittle material and its failure is mostly due to this characteristic. Different methods have been used to overcome this problem and give ductility to concrete matrix. Using short fibres like steel fibres or synthetic fibres and polymeric material is of attention to improve this behaviour of concrete. The effect of these additives is more on the post peak behaviour of concrete which improves the strain softening where tension is applied. Fibres within the matrix, can bridge the cracks which improves the performance of concrete matrix and results in a better stress bearing material. Different types and percentages of polypropylene fibres have been investigated for the mechanical properties of concrete. From among these mixes two best are selected and reinforced beams are casted to be tested under four point bending test. Results show that by using high percentage of PP fibre in the reinforced concrete beam, ductility can be improved by 160 %.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/120780