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Fly ash-based geopolymer lightweight concrete using foaming agent

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Main Authors: Mohd Mustafa Al Bakri, Abdullah, Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr., Mohamed, Bnhussain, Khairul Nizar, Ismail, Prof. Madya Dr., Zarina, Yahya, Rafiza, Abdul Razak
Other Authors: mustafa_albakri@unimap.edu.my
Format: Article
Language:English
Published: MDPI, Basel, Switzerland. 2013
Subjects:
Alkaline activator
Curing temperature
Fly ash
Foam concrete
Geopolymer
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/22913
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spelling my.unimap-229132013-01-09T05:06:46Z Fly ash-based geopolymer lightweight concrete using foaming agent Mohd Mustafa Al Bakri, Abdullah Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr. Mohamed, Bnhussain Khairul Nizar, Ismail, Prof. Madya Dr. Zarina, Yahya Rafiza, Abdul Razak mustafa_albakri@unimap.edu.my Alkaline activator Curing temperature Fly ash Foam concrete Geopolymer Link to publisher's homepage at http://www.mdpi.com/ In this paper, we report the results of our investigation on the possibility of producing foam concrete by using a geopolymer system. Class C fly ash was mixed with an alkaline activator solution (a mixture of sodium silicate and NaOH), and foam was added to the geopolymeric mixture to produce lightweight concrete. The NaOH solution was prepared by dilute NaOH pellets with distilled water. The reactives were mixed to produce a homogeneous mixture, which was placed into a 50 mm mold and cured at two different curing temperatures (60 °C and room temperature), for 24 hours. After the curing process, the strengths of the samples were tested on days 1, 7, and 28. The water absorption, porosity, chemical composition, microstructure, XRD and FTIR analyses were studied. The results showed that the sample which was cured at 60 °C (LW2) produced the maximum compressive strength for all tests, (11.03 MPa, 17.59 MPa, and 18.19 MPa) for days 1, 7, and 28, respectively. Also, the water absorption and porosity of LW2 were reduced by 6.78% and 1.22% after 28 days, respectively. The SEM showed that the LW2 sample had a denser matrix than LW1. This was because LW2 was heat cured, which caused the geopolymerization rate to increase, producing a denser matrix. However for LW1, microcracks were present on the surface, which reduced the compressive strength and increased water absorption and porosity. 2013-01-09T05:06:46Z 2013-01-09T05:06:46Z 2012-06 Article International Journal of Molecular Sciences, vol. 13 (6), 2012, pages 7186-7198 1422-0067 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3397519/pdf/ijms-13-07186.pdf http://hdl.handle.net/123456789/22913 en MDPI, Basel, Switzerland.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Alkaline activator
Curing temperature
Fly ash
Foam concrete
Geopolymer
spellingShingle Alkaline activator
Curing temperature
Fly ash
Foam concrete
Geopolymer
Mohd Mustafa Al Bakri, Abdullah
Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.
Mohamed, Bnhussain
Khairul Nizar, Ismail, Prof. Madya Dr.
Zarina, Yahya
Rafiza, Abdul Razak
Fly ash-based geopolymer lightweight concrete using foaming agent
description Link to publisher's homepage at http://www.mdpi.com/
author2 mustafa_albakri@unimap.edu.my
author_facet mustafa_albakri@unimap.edu.my
Mohd Mustafa Al Bakri, Abdullah
Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.
Mohamed, Bnhussain
Khairul Nizar, Ismail, Prof. Madya Dr.
Zarina, Yahya
Rafiza, Abdul Razak
format Article
author Mohd Mustafa Al Bakri, Abdullah
Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.
Mohamed, Bnhussain
Khairul Nizar, Ismail, Prof. Madya Dr.
Zarina, Yahya
Rafiza, Abdul Razak
author_sort Mohd Mustafa Al Bakri, Abdullah
title Fly ash-based geopolymer lightweight concrete using foaming agent
title_short Fly ash-based geopolymer lightweight concrete using foaming agent
title_full Fly ash-based geopolymer lightweight concrete using foaming agent
title_fullStr Fly ash-based geopolymer lightweight concrete using foaming agent
title_full_unstemmed Fly ash-based geopolymer lightweight concrete using foaming agent
title_sort fly ash-based geopolymer lightweight concrete using foaming agent
publisher MDPI, Basel, Switzerland.
publishDate 2013
url http://dspace.unimap.edu.my/xmlui/handle/123456789/22913
_version_ 1643793834759421952
score 13.214268

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