Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads

The conventional grouted connections with corrugated aluminium sleeves have been used widely in precast concrete construction. The main problem of the conventional grouted sleeve connections is the need for long embedded lengths reinforcement rebars to achieve full continuity. There is a tendency fo...

Full description

Saved in:

Bibliographic Details
Main Author:	Ling, Jen Hua
Format:	Thesis
Published:	2011
Subjects:	TA Engineering (General) Civil engineering (General)
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.31277
record_format	uketd_dc
spelling	my-utm-ep.312772017-09-11T03:05:25Z Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads 2011 Ling, Jen Hua TA Engineering (General). Civil engineering (General) The conventional grouted connections with corrugated aluminium sleeves have been used widely in precast concrete construction. The main problem of the conventional grouted sleeve connections is the need for long embedded lengths reinforcement rebars to achieve full continuity. There is a tendency for the long rebars to touch the sleeve wall and subsequently preventing penetration of grout around the rebar. Since the grout inside the sleeve cannot be inspected after installation, there is doubt that the main rebar is fully bonded. This study proposed a grouted spiral connection which can overcome the use of long embedded length of connected rebars. The main objective of this study was to investigate the effect of spiral confinement on the bond stress-slip relationship. The experimental program was carried out in two phases, Phase I and Phase II. In Phase I, a total of thirty-six spiral connections were subjected to increasing direct axial pullout loads. Then, in Phase II, a total of twelve beams comprising spiral connections were subjected to flexural pullout loads. Parameters considered in this study were pitch distance and diameter of spiral connections. The experimental results showed that the use of smaller pitch distance and spiral diameter resulted in higher bond strength. However, the spiral diameter had more dominant confinement effect such that it increased the bond strength of direct and flexural pullout tests very dramatically by 34.5% and 40%, respectively. In addition, lower bond strength from the beam tests was reported as compared to the axial pullout tests. The bond strengths obtained from the flexural pullout tests were within the range of 0.74 to 0.79 times the bond strengths of the axial pullout tests. Finally, analytical equations were proposed to express the bond stress-slip relationship and bond strength of the grouted spiral connection 2011 Thesis http://eprints.utm.my/id/eprint/31277/ http://libraryopac.utm.my/client/en_AU/main/search/results/?lm=&qu=Behaviour+of+grouted+splice+connections+in+precast+concrete+walls+subjected+to+tensile%2C+shear+and+flexural+loads&rt=&submit=# phd doctoral Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Ling, Jen Hua Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
description	The conventional grouted connections with corrugated aluminium sleeves have been used widely in precast concrete construction. The main problem of the conventional grouted sleeve connections is the need for long embedded lengths reinforcement rebars to achieve full continuity. There is a tendency for the long rebars to touch the sleeve wall and subsequently preventing penetration of grout around the rebar. Since the grout inside the sleeve cannot be inspected after installation, there is doubt that the main rebar is fully bonded. This study proposed a grouted spiral connection which can overcome the use of long embedded length of connected rebars. The main objective of this study was to investigate the effect of spiral confinement on the bond stress-slip relationship. The experimental program was carried out in two phases, Phase I and Phase II. In Phase I, a total of thirty-six spiral connections were subjected to increasing direct axial pullout loads. Then, in Phase II, a total of twelve beams comprising spiral connections were subjected to flexural pullout loads. Parameters considered in this study were pitch distance and diameter of spiral connections. The experimental results showed that the use of smaller pitch distance and spiral diameter resulted in higher bond strength. However, the spiral diameter had more dominant confinement effect such that it increased the bond strength of direct and flexural pullout tests very dramatically by 34.5% and 40%, respectively. In addition, lower bond strength from the beam tests was reported as compared to the axial pullout tests. The bond strengths obtained from the flexural pullout tests were within the range of 0.74 to 0.79 times the bond strengths of the axial pullout tests. Finally, analytical equations were proposed to express the bond stress-slip relationship and bond strength of the grouted spiral connection
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Ling, Jen Hua
author_facet	Ling, Jen Hua
author_sort	Ling, Jen Hua
title	Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
title_short	Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
title_full	Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
title_fullStr	Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
title_full_unstemmed	Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
title_sort	behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2011
_version_	1747815764873707520

Behaviour of grouted splice connections in precast concrete walls subjected to tensile, shear and flexural loads

Similar Items