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Flexural performance of a precast concrete slab with steel fiber concrete topping

The positive effects of various types of fibers on concrete ductility and other engineering properties, such as the tensile, flexural, fatigue, and load-bearing capacity after cracking and toughness, are well known. Steel fiber-reinforced concrete (SFRC) has been used increasingly in recent years an...

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Main Authors:	Mansour, Farnoud Rahimi, Abu Bakar, Suhaimi, Ibrahim, Izni Syahrizal, Marsono, Abdul Kadir, Marabi, Bahram
Format:	Article
Published:	Elsevier 2015
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/55323/ http://dx.doi.org/10.1016/j.conbuildmat.2014.09.112
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id	my.utm.55323
record_format	eprints
spelling	my.utm.553232017-02-15T07:08:30Z http://eprints.utm.my/id/eprint/55323/ Flexural performance of a precast concrete slab with steel fiber concrete topping Mansour, Farnoud Rahimi Abu Bakar, Suhaimi Ibrahim, Izni Syahrizal Marsono, Abdul Kadir Marabi, Bahram TA Engineering (General). Civil engineering (General) The positive effects of various types of fibers on concrete ductility and other engineering properties, such as the tensile, flexural, fatigue, and load-bearing capacity after cracking and toughness, are well known. Steel fiber-reinforced concrete (SFRC) has been used increasingly in recent years and has been applied to various structural components. Considerable interest has been developed in using steel fibers in concrete to increase the load-carrying capacity of the structural members in service. It has been used recently to increase the flexural capacity of concrete slabs by applying a thin layer of SFRC onto an existing slab, a technique known as cement-base bonded overlay. The objective of this research is the investigation of the flexural behavior of a precast concrete slab with a steel fiber concrete topping. To reinforce the concrete overlay, hooked-end steel fibers with a length of 30 mm and a diameter of 0.75 mm were used. Because the performance of this composite slab depends on the bonding between the old and new concrete, different types of roughness at the interface has used to provide good bonding between the two layers. Based on experimental tests, the flexural performance was shown to depend not only on adding the steel fibers to the topping but also on the type of interface roughness. To examine the composite behavior of the specimens, the interface slip was also measured throughout the test. The results showed a good reliability of roughness in providing bonding strength at the interface. It was also found that roughness in the transverse direction provides the best bonding strength at the interface. Although the results showed interface slip at mid-span, slip was not detected at either end of the specimen Elsevier 2015-01 Article PeerReviewed Mansour, Farnoud Rahimi and Abu Bakar, Suhaimi and Ibrahim, Izni Syahrizal and Marsono, Abdul Kadir and Marabi, Bahram (2015) Flexural performance of a precast concrete slab with steel fiber concrete topping. Construction and Building Materials, 75 . pp. 112-120. ISSN 0950-0618 http://dx.doi.org/10.1016/j.conbuildmat.2014.09.112 DOI:10.11113/10.1016/j.conbuildmat.2014.09.112
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Mansour, Farnoud Rahimi Abu Bakar, Suhaimi Ibrahim, Izni Syahrizal Marsono, Abdul Kadir Marabi, Bahram Flexural performance of a precast concrete slab with steel fiber concrete topping
description	The positive effects of various types of fibers on concrete ductility and other engineering properties, such as the tensile, flexural, fatigue, and load-bearing capacity after cracking and toughness, are well known. Steel fiber-reinforced concrete (SFRC) has been used increasingly in recent years and has been applied to various structural components. Considerable interest has been developed in using steel fibers in concrete to increase the load-carrying capacity of the structural members in service. It has been used recently to increase the flexural capacity of concrete slabs by applying a thin layer of SFRC onto an existing slab, a technique known as cement-base bonded overlay. The objective of this research is the investigation of the flexural behavior of a precast concrete slab with a steel fiber concrete topping. To reinforce the concrete overlay, hooked-end steel fibers with a length of 30 mm and a diameter of 0.75 mm were used. Because the performance of this composite slab depends on the bonding between the old and new concrete, different types of roughness at the interface has used to provide good bonding between the two layers. Based on experimental tests, the flexural performance was shown to depend not only on adding the steel fibers to the topping but also on the type of interface roughness. To examine the composite behavior of the specimens, the interface slip was also measured throughout the test. The results showed a good reliability of roughness in providing bonding strength at the interface. It was also found that roughness in the transverse direction provides the best bonding strength at the interface. Although the results showed interface slip at mid-span, slip was not detected at either end of the specimen
format	Article
author	Mansour, Farnoud Rahimi Abu Bakar, Suhaimi Ibrahim, Izni Syahrizal Marsono, Abdul Kadir Marabi, Bahram
author_facet	Mansour, Farnoud Rahimi Abu Bakar, Suhaimi Ibrahim, Izni Syahrizal Marsono, Abdul Kadir Marabi, Bahram
author_sort	Mansour, Farnoud Rahimi
title	Flexural performance of a precast concrete slab with steel fiber concrete topping
title_short	Flexural performance of a precast concrete slab with steel fiber concrete topping
title_full	Flexural performance of a precast concrete slab with steel fiber concrete topping
title_fullStr	Flexural performance of a precast concrete slab with steel fiber concrete topping
title_full_unstemmed	Flexural performance of a precast concrete slab with steel fiber concrete topping
title_sort	flexural performance of a precast concrete slab with steel fiber concrete topping
publisher	Elsevier
publishDate	2015
url	http://eprints.utm.my/id/eprint/55323/ http://dx.doi.org/10.1016/j.conbuildmat.2014.09.112
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score	13.211869

Flexural performance of a precast concrete slab with steel fiber concrete topping

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