Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature

Geopolymer can be used to produce structural concrete without the consideration on the emission of carbon dioxide as what Portland cement did. Geopolymer are produced when alumino-silicate, like fly ash mixed with a strong alkaline solution. The production of geopolymer is more economical and sustai...

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Main Author:	Low, Wei Keat
Format:	Undergraduates Project Papers
Language:	English English English
Published:	2015
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/12187/ http://umpir.ump.edu.my/id/eprint/12187/ http://umpir.ump.edu.my/id/eprint/12187/1/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29.pdf http://umpir.ump.edu.my/id/eprint/12187/2/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29%20-%20CHAP%203.pdf http://umpir.ump.edu.my/id/eprint/12187/3/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29%20-%20CHAP%201.pdf

id	ump-12187
recordtype	eprints
spelling	ump-121872016-03-17T03:37:02Z http://umpir.ump.edu.my/id/eprint/12187/ Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature Low, Wei Keat TA Engineering (General). Civil engineering (General) Geopolymer can be used to produce structural concrete without the consideration on the emission of carbon dioxide as what Portland cement did. Geopolymer are produced when alumino-silicate, like fly ash mixed with a strong alkaline solution. The production of geopolymer is more economical and sustainable than normal cement. Durability of a structure is one of the concern for the engineers. In order to maintain the strength characteristic of the geopolymer, way to prolong the lifespan and cater the durability problems caused by cracks after high temperature exposure. Presence of self-healing agent contributes to the enhancement on the strength characteristic of the geopolymer concrete after high temperature exposure. There are several type of self-healing agent which can be used in geopolymer, such as: Poly Methyl Acrylate, silica gel, tung oil,silicone and bacterial solution. Silica gel will be used for this research as a self-healing agent. The main objective of this research is to determine the strength performance of self-healing geopolymer mortar after high temperature exposure. This research is conducted along with the following sub-objectives which is to identify the suitability of silica gel as self-healing agent in geopolymer mortar after exposed to extremely high temperature and the effectiveness of silica gel as self-healing agent in geopolymer mortar. Samples were subjected to elevated temperature of 500, 600 and 700 °C. The highest compressive strength achieved with the inclusion of silica gel in the specimen was 63.579 MPa which is higher than normal concrete. The compressive strength of the geopolymer mortar is also preserved after high temperature exposure. The performance of the geopolymer concrete is enhanced with the presence of the self-healing agent as the micro cracks are filled. The compressive strength of geopolymer was preserved even after exposure to 500 °C in the furnace for 30 minutes. Samples showed that the compressive strength decreased exponentially from 600 °C onwards which indicated geopolymer started to fail structurally. At 500 °C, the compressive strength did not have significant difference where there are only slight reduction in the specimens. As a conclusion, the objectives of this research have been fulfilled. Silica gel is suitable for the self-healing mechanism to take place. However, the silica gel should be replaced with non-commercial silica gel to ensure that the effect of self-healing mechanism take place with better framework produced through the reaction of the silica gel with the geopolymer 2015-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12187/1/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/12187/2/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29%20-%20CHAP%203.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/12187/3/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29%20-%20CHAP%201.pdf Low, Wei Keat (2015) Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature. Faculty of Civil Engineering & Earth Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:92236&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Low, Wei Keat Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
description	Geopolymer can be used to produce structural concrete without the consideration on the emission of carbon dioxide as what Portland cement did. Geopolymer are produced when alumino-silicate, like fly ash mixed with a strong alkaline solution. The production of geopolymer is more economical and sustainable than normal cement. Durability of a structure is one of the concern for the engineers. In order to maintain the strength characteristic of the geopolymer, way to prolong the lifespan and cater the durability problems caused by cracks after high temperature exposure. Presence of self-healing agent contributes to the enhancement on the strength characteristic of the geopolymer concrete after high temperature exposure. There are several type of self-healing agent which can be used in geopolymer, such as: Poly Methyl Acrylate, silica gel, tung oil,silicone and bacterial solution. Silica gel will be used for this research as a self-healing agent. The main objective of this research is to determine the strength performance of self-healing geopolymer mortar after high temperature exposure. This research is conducted along with the following sub-objectives which is to identify the suitability of silica gel as self-healing agent in geopolymer mortar after exposed to extremely high temperature and the effectiveness of silica gel as self-healing agent in geopolymer mortar. Samples were subjected to elevated temperature of 500, 600 and 700 °C. The highest compressive strength achieved with the inclusion of silica gel in the specimen was 63.579 MPa which is higher than normal concrete. The compressive strength of the geopolymer mortar is also preserved after high temperature exposure. The performance of the geopolymer concrete is enhanced with the presence of the self-healing agent as the micro cracks are filled. The compressive strength of geopolymer was preserved even after exposure to 500 °C in the furnace for 30 minutes. Samples showed that the compressive strength decreased exponentially from 600 °C onwards which indicated geopolymer started to fail structurally. At 500 °C, the compressive strength did not have significant difference where there are only slight reduction in the specimens. As a conclusion, the objectives of this research have been fulfilled. Silica gel is suitable for the self-healing mechanism to take place. However, the silica gel should be replaced with non-commercial silica gel to ensure that the effect of self-healing mechanism take place with better framework produced through the reaction of the silica gel with the geopolymer
format	Undergraduates Project Papers
author	Low, Wei Keat
author_facet	Low, Wei Keat
author_sort	Low, Wei Keat
title	Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
title_short	Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
title_full	Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
title_fullStr	Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
title_full_unstemmed	Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
title_sort	study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/12187/ http://umpir.ump.edu.my/id/eprint/12187/ http://umpir.ump.edu.my/id/eprint/12187/1/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29.pdf http://umpir.ump.edu.my/id/eprint/12187/2/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29%20-%20CHAP%203.pdf http://umpir.ump.edu.my/id/eprint/12187/3/FKASA%20-%20LOW%20WEI%20KEAT%20%28CD9285%29%20-%20CHAP%201.pdf
first_indexed	2023-09-18T22:13:34Z
last_indexed	2023-09-18T22:13:34Z
_version_	1777415187880476672

Study of silica gel as self-healing agent in geopolymer mortar exposed to extremely high temperature

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