Bonding behaviour between old and new foamed concrete with different substrate surface

Recent years, method of concrete strengthening has been a rising issue. In structure of concrete or concrete repairing works, the most Important element is that the bonding itself. The surface preparation of concrete substrate will give differ results in term of bonding behavior. Performance of...

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Main Author:	Mohd Marwan Hafiz, Mohd Anuar
Format:	Undergraduates Project Papers
Language:	English
Published:	2014
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/10072/ http://umpir.ump.edu.my/id/eprint/10072/ http://umpir.ump.edu.my/id/eprint/10072/1/MOHD%20MARWAN%20HAFIZ%20BIN%20MOHD%20ANNUAR.PDF

id	ump-10072
recordtype	eprints
spelling	ump-100722015-09-23T00:47:26Z http://umpir.ump.edu.my/id/eprint/10072/ Bonding behaviour between old and new foamed concrete with different substrate surface Mohd Marwan Hafiz, Mohd Anuar TA Engineering (General). Civil engineering (General) Recent years, method of concrete strengthening has been a rising issue. In structure of concrete or concrete repairing works, the most Important element is that the bonding itself. The surface preparation of concrete substrate will give differ results in term of bonding behavior. Performance of a structural system such beams and slabs are relies on behavior of the bonding between the old and new concrete. The research intended at studying the bonding strength between the old and new foamed concrete due to surface preparations. Factors such as roughness of surface, compaction, and concrete curing affect the bond. In this study, the surface of the old concrete were partially chipped using a light jackhammers and differed in terms of its numbers. The research was also to observe failure mode pattern due to different number of chippings. Samples were tested for two different methods namely Splitting Test and Slant Shear Test. The slant shear tests were conducted to investigate the bonding strength in term of shear. For slant shear test, 12 blocks sizing 100 mm x 100 mm x 400 mm were prepared. Meanwhile, the slant shear test was conducted to measure the axial tensile strength of a concrete submitted to compression along its length. For this test, 12 cube specimens ofize 150 mm x 150 mm x 150 mm were prepared. These tests were conducted on 28 days after standard air curing because at day 28 the concrete had fully achieved its true strength. Foamed concrete was used to reduce the self-weight of the structural element compared to the conventional concrete. For each testing method, three samples were prepared and differed in term of surface roughness of 0, 10, 20 and 30 number of drill holes. From the results, S30 for Splitting test and SR30 Slant shear test showed the highest in terms of bonding strength compared to lower surface roughness with values of 2.17 N/mni2 and 21.73 N/mrn2 respectively. However, all types of surface roughness are failed intermof bonding. 2014-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/10072/1/MOHD%20MARWAN%20HAFIZ%20BIN%20MOHD%20ANNUAR.PDF Mohd Marwan Hafiz, Mohd Anuar (2014) Bonding behaviour between old and new foamed concrete with different substrate surface. Faculty of Civil Engineering and Earth Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:84815&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Mohd Marwan Hafiz, Mohd Anuar Bonding behaviour between old and new foamed concrete with different substrate surface
description	Recent years, method of concrete strengthening has been a rising issue. In structure of concrete or concrete repairing works, the most Important element is that the bonding itself. The surface preparation of concrete substrate will give differ results in term of bonding behavior. Performance of a structural system such beams and slabs are relies on behavior of the bonding between the old and new concrete. The research intended at studying the bonding strength between the old and new foamed concrete due to surface preparations. Factors such as roughness of surface, compaction, and concrete curing affect the bond. In this study, the surface of the old concrete were partially chipped using a light jackhammers and differed in terms of its numbers. The research was also to observe failure mode pattern due to different number of chippings. Samples were tested for two different methods namely Splitting Test and Slant Shear Test. The slant shear tests were conducted to investigate the bonding strength in term of shear. For slant shear test, 12 blocks sizing 100 mm x 100 mm x 400 mm were prepared. Meanwhile, the slant shear test was conducted to measure the axial tensile strength of a concrete submitted to compression along its length. For this test, 12 cube specimens ofize 150 mm x 150 mm x 150 mm were prepared. These tests were conducted on 28 days after standard air curing because at day 28 the concrete had fully achieved its true strength. Foamed concrete was used to reduce the self-weight of the structural element compared to the conventional concrete. For each testing method, three samples were prepared and differed in term of surface roughness of 0, 10, 20 and 30 number of drill holes. From the results, S30 for Splitting test and SR30 Slant shear test showed the highest in terms of bonding strength compared to lower surface roughness with values of 2.17 N/mni2 and 21.73 N/mrn2 respectively. However, all types of surface roughness are failed intermof bonding.
format	Undergraduates Project Papers
author	Mohd Marwan Hafiz, Mohd Anuar
author_facet	Mohd Marwan Hafiz, Mohd Anuar
author_sort	Mohd Marwan Hafiz, Mohd Anuar
title	Bonding behaviour between old and new foamed concrete with different substrate surface
title_short	Bonding behaviour between old and new foamed concrete with different substrate surface
title_full	Bonding behaviour between old and new foamed concrete with different substrate surface
title_fullStr	Bonding behaviour between old and new foamed concrete with different substrate surface
title_full_unstemmed	Bonding behaviour between old and new foamed concrete with different substrate surface
title_sort	bonding behaviour between old and new foamed concrete with different substrate surface
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/10072/ http://umpir.ump.edu.my/id/eprint/10072/ http://umpir.ump.edu.my/id/eprint/10072/1/MOHD%20MARWAN%20HAFIZ%20BIN%20MOHD%20ANNUAR.PDF
first_indexed	2023-09-18T22:09:18Z
last_indexed	2023-09-18T22:09:18Z
_version_	1777414919289831424

Bonding behaviour between old and new foamed concrete with different substrate surface

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