The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration

Malaysia as the world’s largest exporter of palm oil has been facing problem in disposing palm oil fuel ash (POFA), a by-product of palm oil mills since many years ago. POFA is one of waste material that can be used as pozzolanic or fillers or replacement for the cement in concrete. This research i...

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Main Author:	Nur Ayna, Azmi
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/12228/ http://umpir.ump.edu.my/id/eprint/12228/ http://umpir.ump.edu.my/id/eprint/12228/1/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29.pdf http://umpir.ump.edu.my/id/eprint/12228/2/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29%20-%20CHAP%201.pdf http://umpir.ump.edu.my/id/eprint/12228/3/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29%20-%20CHAP%203.pdf

id	ump-12228
recordtype	eprints
spelling	ump-122282016-03-17T06:46:37Z http://umpir.ump.edu.my/id/eprint/12228/ The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration Nur Ayna, Azmi TA Engineering (General). Civil engineering (General) Malaysia as the world’s largest exporter of palm oil has been facing problem in disposing palm oil fuel ash (POFA), a by-product of palm oil mills since many years ago. POFA is one of waste material that can be used as pozzolanic or fillers or replacement for the cement in concrete. This research is important to compare the effectiveness using POFA as a partial cement replacement material towards concrete microstructure and concrete hydration. The quality of POFA was improved by grinding until the median particles sizes is about 63 μm. At the first stage, each series of concrete test is design for grade 30. Four types of mixes are prepared. One consists of a control mix whereas another three consists of 20% of POFA, 20% of POFA with 5% of limestone and 20% of POFA with 10% of limestone respectively. For the compressive strength, concrete cubes 150 x 150 x 150 mm was tested due to 7 days, 28 days and 90 days of curing ages. From the testing carried out, it was found that, the compressive strength of POFA concrete was much lower than that of concrete without POFA. Although the strength of POFA concrete did not exceed the characteristic strength, the compressive strength of POFA concrete is slightly increased at 90 days. An analytical methods used to investigate the microstructure of the POFA include X-ray Diffraction (XRD), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM).Based on XRD analysis leads to the fact that the existence of C-S-H increased with curing age indicating the progress of cement hydration reaction and pozzolanic reaction. From the microstructural analysis (SEM) shows the existing of C-S-H gel has lead to a densification structure and increase the strength of concrete. Hexagonal platelets of Ca(OH)2 could be observed in some of samples. As a conclusion, it found that replacement of cement with 20% of POFA has achieved the pozzolanic reaction and also can improve the pore structure of the concrete. 2015-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12228/1/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/12228/2/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29%20-%20CHAP%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/12228/3/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29%20-%20CHAP%203.pdf Nur Ayna, Azmi (2015) The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration. Faculty of Civil Engineering & Earth Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:92119&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) Nur Ayna, Azmi The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration
description	Malaysia as the world’s largest exporter of palm oil has been facing problem in disposing palm oil fuel ash (POFA), a by-product of palm oil mills since many years ago. POFA is one of waste material that can be used as pozzolanic or fillers or replacement for the cement in concrete. This research is important to compare the effectiveness using POFA as a partial cement replacement material towards concrete microstructure and concrete hydration. The quality of POFA was improved by grinding until the median particles sizes is about 63 μm. At the first stage, each series of concrete test is design for grade 30. Four types of mixes are prepared. One consists of a control mix whereas another three consists of 20% of POFA, 20% of POFA with 5% of limestone and 20% of POFA with 10% of limestone respectively. For the compressive strength, concrete cubes 150 x 150 x 150 mm was tested due to 7 days, 28 days and 90 days of curing ages. From the testing carried out, it was found that, the compressive strength of POFA concrete was much lower than that of concrete without POFA. Although the strength of POFA concrete did not exceed the characteristic strength, the compressive strength of POFA concrete is slightly increased at 90 days. An analytical methods used to investigate the microstructure of the POFA include X-ray Diffraction (XRD), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM).Based on XRD analysis leads to the fact that the existence of C-S-H increased with curing age indicating the progress of cement hydration reaction and pozzolanic reaction. From the microstructural analysis (SEM) shows the existing of C-S-H gel has lead to a densification structure and increase the strength of concrete. Hexagonal platelets of Ca(OH)2 could be observed in some of samples. As a conclusion, it found that replacement of cement with 20% of POFA has achieved the pozzolanic reaction and also can improve the pore structure of the concrete.
format	Undergraduates Project Papers
author	Nur Ayna, Azmi
author_facet	Nur Ayna, Azmi
author_sort	Nur Ayna, Azmi
title	The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration
title_short	The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration
title_full	The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration
title_fullStr	The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration
title_full_unstemmed	The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration
title_sort	effect of palm oil fuel ash (pofa) with limestone as a partial cement replacement material toward concrete microstructure and hydration
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/12228/ http://umpir.ump.edu.my/id/eprint/12228/ http://umpir.ump.edu.my/id/eprint/12228/1/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29.pdf http://umpir.ump.edu.my/id/eprint/12228/2/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29%20-%20CHAP%201.pdf http://umpir.ump.edu.my/id/eprint/12228/3/FKASA%20-%20NUR%20AYNA%20BINTI%20AZMI%20%28CD9235%29%20-%20CHAP%203.pdf
first_indexed	2023-09-18T22:13:39Z
last_indexed	2023-09-18T22:13:39Z
_version_	1777415193818562560

The effect of palm oil fuel ash (POFA) with limestone as a partial cement replacement material toward concrete microstructure and hydration

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