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Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement

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Main Authors: C. Rahmawati, L. Handayani, S. Aprilia, Abdullah, Mohd Mustafa Al Bakri, Abdullah, Ikmal Hakem, Aziz, Emy Aizat, Azimi
Other Authors: cutrahmawati@abulyatama.ac.id
Format: Article
Language:English
Published: IOP Publishing Ltd 2022
Subjects:
Rice husk ash (RHA)
Geopolymers
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74870
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spelling my.unimap-748702022-03-30T07:49:05Z Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement C. Rahmawati L. Handayani S. Aprilia Abdullah C. Rahmawati Mohd Mustafa Al Bakri, Abdullah Ikmal Hakem, Aziz Emy Aizat, Azimi cutrahmawati@abulyatama.ac.id Faculty of Fisheries, Universitas Abulyatama Engineering Faculty, University of Syiah Kuala Department of Civil Engineering, Engineering Faculty, University of Syiah Kuala Department of Civil Engineering, Engineering Faculty, Universitas Abulyatama Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP) Faculty of Applied Science, Universiti Teknologi MARA (UiTM) Rice husk ash (RHA) Geopolymers Link to publisher's homepage at https://iopscience.iop.org/ Rice husk ash (RHA), a byproduct of the rice industry, is the primary source of amorphous silica for producing sodium silicate solutions to replace standard commercial sodium silicate in geopolymer mixture design. The effect of various concentrations of NaOH used as an activator to produce epoxy-geopolymer cement was studied. Three initial concentrations of NaOH were used (8, 10, and 12M) to examine the optimum dissolution and formation of silica oligomers that can function as the activator during the geopolymerization. The result indicated the increase of NaOH concentration raises the silica yield strength. The silica yield found was 65.84%, 70.53% and 72.06% on NaOH use of 8, 10, 12 M, respectively. IR-spectra results showed silica functional groups and the sodium silicate were successfully synthesized. The IR spectra indicated the appearance of hydroxyl bonds, which strengthen the geopolymer matrix. SEM results showed the C-S-H and N-A-S-H bonds in the geopolymer. With 10M NaOH, the compressive strength of the geopolymer cement paste was optimal at 27.53 MPa. Thus, Rice husk ash (RHA) is feasible to be used as an activator in high calcium fly ash-based epoxy geopolymer cement 2022 2022-03-30T07:49:05Z 2022-03-30T07:49:05Z 2021-03 Article Journal of Physics: Conference Series,, vol.1845, 2021, 9 pages 1757-899x (online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74870 https://doi.org/10.1088/1742-6596/1845/1/012072 en IOP Publishing Ltd
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 Rice husk ash (RHA)
Geopolymers
spellingShingle Rice husk ash (RHA)
Geopolymers
C. Rahmawati
L. Handayani
S. Aprilia
Abdullah
C. Rahmawati
Mohd Mustafa Al Bakri, Abdullah
Ikmal Hakem, Aziz
Emy Aizat, Azimi
Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
description Link to publisher's homepage at https://iopscience.iop.org/
author2 cutrahmawati@abulyatama.ac.id
author_facet cutrahmawati@abulyatama.ac.id
C. Rahmawati
L. Handayani
S. Aprilia
Abdullah
C. Rahmawati
Mohd Mustafa Al Bakri, Abdullah
Ikmal Hakem, Aziz
Emy Aizat, Azimi
format Article
author C. Rahmawati
L. Handayani
S. Aprilia
Abdullah
C. Rahmawati
Mohd Mustafa Al Bakri, Abdullah
Ikmal Hakem, Aziz
Emy Aizat, Azimi
author_sort C. Rahmawati
title Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
title_short Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
title_full Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
title_fullStr Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
title_full_unstemmed Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
title_sort synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement
publisher IOP Publishing Ltd
publishDate 2022
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74870
_version_ 1729704810422206464
score 13.214268

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