Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction

Steel fibre can act as an alternative to replace the conventional prefabricated welded wire mesh (PWWM). It serves as a secondary reinforcement in concrete topping of the precast composite slab construction. Hence, an in-depth study on the performance was conducted to prove the notion. The study wa...

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Main Author:	Noor Nabilah, Sarbini
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/12072/1/NOOR%20NABILAH%20BINTI%20SARBINI.PDF
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id	my-ump-ir.12072
record_format	uketd_dc
spelling	my-ump-ir.120722021-08-24T02:12:36Z Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction 2014-06 Noor Nabilah, Sarbini TA Engineering (General). Civil engineering (General) Steel fibre can act as an alternative to replace the conventional prefabricated welded wire mesh (PWWM). It serves as a secondary reinforcement in concrete topping of the precast composite slab construction. Hence, an in-depth study on the performance was conducted to prove the notion. The study was essential due to the differences of behaviours between steel fibre in the compression and the flexural zone of the composite slab. In fact, there was no sufficient knowledge of compression mechanism of steel fibre reinforced concrete (SFRC) due to the lack of study in this area. The main objectives of this study were to investigate the structural performance of composite slab where SFRC was applied in the concrete topping and to develop an analytical model to predict the shear strength of the composite slab by validating the model with the experimental results. Aspect ratio and volume fraction were emphasised in selecting the most suitable type of steel fibre in this study. The experimental results showed that SFRC concrete topping improved the ultimate load and failure mechanism. The results also suggested that the ideal types of steel fibre to be applied in the concrete topping are SF60 and SF33 with optimum volume fraction between 0.75% and 1.00%. Furthermore, it was proven that the SFRC concrete topping has improved the shear capacity of the composite slab by 17%. The performance of the proposed analytical model in predicting the ultimate shear capacity of the composite slab with SFRC concrete topping was considered good due to its strong correlation with the experimental data. This suggested that steel fibre was suitable to replace PWWM as secondary reinforcement in concrete topping in precast composite slab construction. The proposed analytical model can also be used to predict the shear capacity of the composite slab with SFRC concrete topping. 2014-06 Thesis http://umpir.ump.edu.my/id/eprint/12072/ http://umpir.ump.edu.my/id/eprint/12072/1/NOOR%20NABILAH%20BINTI%20SARBINI.PDF application/pdf en public phd doctoral Universiti Teknologi Malaysia Faculty of Civil Engineering
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Noor Nabilah, Sarbini Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
description	Steel fibre can act as an alternative to replace the conventional prefabricated welded wire mesh (PWWM). It serves as a secondary reinforcement in concrete topping of the precast composite slab construction. Hence, an in-depth study on the performance was conducted to prove the notion. The study was essential due to the differences of behaviours between steel fibre in the compression and the flexural zone of the composite slab. In fact, there was no sufficient knowledge of compression mechanism of steel fibre reinforced concrete (SFRC) due to the lack of study in this area. The main objectives of this study were to investigate the structural performance of composite slab where SFRC was applied in the concrete topping and to develop an analytical model to predict the shear strength of the composite slab by validating the model with the experimental results. Aspect ratio and volume fraction were emphasised in selecting the most suitable type of steel fibre in this study. The experimental results showed that SFRC concrete topping improved the ultimate load and failure mechanism. The results also suggested that the ideal types of steel fibre to be applied in the concrete topping are SF60 and SF33 with optimum volume fraction between 0.75% and 1.00%. Furthermore, it was proven that the SFRC concrete topping has improved the shear capacity of the composite slab by 17%. The performance of the proposed analytical model in predicting the ultimate shear capacity of the composite slab with SFRC concrete topping was considered good due to its strong correlation with the experimental data. This suggested that steel fibre was suitable to replace PWWM as secondary reinforcement in concrete topping in precast composite slab construction. The proposed analytical model can also be used to predict the shear capacity of the composite slab with SFRC concrete topping.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Noor Nabilah, Sarbini
author_facet	Noor Nabilah, Sarbini
author_sort	Noor Nabilah, Sarbini
title	Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
title_short	Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
title_full	Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
title_fullStr	Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
title_full_unstemmed	Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
title_sort	optimization of steel fibre reinforced concrete as concrete topping in composite slab construction
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Civil Engineering
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/12072/1/NOOR%20NABILAH%20BINTI%20SARBINI.PDF
_version_	1783731960525357056

Optimization of steel fibre reinforced concrete as concrete topping in composite slab construction

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