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Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin

Fibre reinforced cementitious composites (FRCC) is a type of high-performance concrete with unique features suitable for repair application. To develop a well-performed FRCC, good fibre dispersion is crucial and it is achievable via high binder content without compromising the mechanical properties....

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Main Author:	Loh , Zhi Pin
Format:	Thesis
Published:	2019
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://studentsrepo.um.edu.my/12982/2/Loh_Zhi_Pin.pdf http://studentsrepo.um.edu.my/12982/1/Loh_Zhi_Pin.pdf http://studentsrepo.um.edu.my/12982/
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spelling	my.um.stud.129822022-03-15T23:22:15Z Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin Loh , Zhi Pin TA Engineering (General). Civil engineering (General) Fibre reinforced cementitious composites (FRCC) is a type of high-performance concrete with unique features suitable for repair application. To develop a well-performed FRCC, good fibre dispersion is crucial and it is achievable via high binder content without compromising the mechanical properties. Therefore, supplementary cementitious material is used to reduce the heat of hydration as well as improving the workability of FRCC. In this research, the focus was on using fixed water-to-binder ratio to study the effect of different binder (900 kg/m3, 1100 kg/m3 and 1300kg/m3) and ground granulated blast furnace slag (GGBS) (0, 30 % and 60 % as fly ash replacement) content on the performance of FRCC as repairing material. Overall, the research was planned into two phases. The initial phase served as a preliminary stage in selecting the FRCC by fulfilling the minimum requirement in terms of workability and compressive strength; whereas the final phase was the testing of mechanical properties, namely, splitting tensile, flexural, slant shear and impact strength tests. The results showed that workability and rheology of FRCC can be improved with higher binder content or using 30 % GGBS replacement. Conversely, FRCC with lower binder content and higher GGBS content induced higher compressive strength. Ultimately, six mixtures of FRCC were selected in the final phase by fulfilling the minimum requirement in terms of workability and compressive strength. Based on the experimental results, the effect of GGBS was observed to be varied at different binder contents on the mentioned mechanical properties and ductility of FRCC; as this is primarily attributed to the interfacial bond of matrix-fibre and matrix strength. Based on the performance and the economic considerations, binder content at 1100kg/m3 and 30% GGBS replacement in FRCC was the most optimum. In overall, the usage of GGBS as partial replacement for fly ash showed positive effect in developing FRCC for repair work as the minimum requirement for mechanical properties of repair material could be fulfilled. 2019-08 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/12982/2/Loh_Zhi_Pin.pdf application/pdf http://studentsrepo.um.edu.my/12982/1/Loh_Zhi_Pin.pdf Loh , Zhi Pin (2019) Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin. Masters thesis, Universiti Malaya. http://studentsrepo.um.edu.my/12982/
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Student Repository
url_provider	http://studentsrepo.um.edu.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Loh , Zhi Pin Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin
description	Fibre reinforced cementitious composites (FRCC) is a type of high-performance concrete with unique features suitable for repair application. To develop a well-performed FRCC, good fibre dispersion is crucial and it is achievable via high binder content without compromising the mechanical properties. Therefore, supplementary cementitious material is used to reduce the heat of hydration as well as improving the workability of FRCC. In this research, the focus was on using fixed water-to-binder ratio to study the effect of different binder (900 kg/m3, 1100 kg/m3 and 1300kg/m3) and ground granulated blast furnace slag (GGBS) (0, 30 % and 60 % as fly ash replacement) content on the performance of FRCC as repairing material. Overall, the research was planned into two phases. The initial phase served as a preliminary stage in selecting the FRCC by fulfilling the minimum requirement in terms of workability and compressive strength; whereas the final phase was the testing of mechanical properties, namely, splitting tensile, flexural, slant shear and impact strength tests. The results showed that workability and rheology of FRCC can be improved with higher binder content or using 30 % GGBS replacement. Conversely, FRCC with lower binder content and higher GGBS content induced higher compressive strength. Ultimately, six mixtures of FRCC were selected in the final phase by fulfilling the minimum requirement in terms of workability and compressive strength. Based on the experimental results, the effect of GGBS was observed to be varied at different binder contents on the mentioned mechanical properties and ductility of FRCC; as this is primarily attributed to the interfacial bond of matrix-fibre and matrix strength. Based on the performance and the economic considerations, binder content at 1100kg/m3 and 30% GGBS replacement in FRCC was the most optimum. In overall, the usage of GGBS as partial replacement for fly ash showed positive effect in developing FRCC for repair work as the minimum requirement for mechanical properties of repair material could be fulfilled.
format	Thesis
author	Loh , Zhi Pin
author_facet	Loh , Zhi Pin
author_sort	Loh , Zhi Pin
title	Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin
title_short	Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin
title_full	Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin
title_fullStr	Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin
title_full_unstemmed	Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin
title_sort	investigation of ternary blended binder pva fibre reinforced cementitious composites as repair material / loh zhi pin
publishDate	2019
url	http://studentsrepo.um.edu.my/12982/2/Loh_Zhi_Pin.pdf http://studentsrepo.um.edu.my/12982/1/Loh_Zhi_Pin.pdf http://studentsrepo.um.edu.my/12982/
_version_	1738506664471953408
score	13.211869

Investigation of ternary blended binder PVA fibre reinforced cementitious composites as repair material / Loh Zhi Pin

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