LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER
This article reports the investigation on the effect of ladle furnace slag replacement on the flexural strength of thin fly ash-based geopolymer. The thin fly ash/slag geopolymers were prepared with the replacement of various percentages of ladle furnace slag (0%, 10%, 20%, 30% and 40%) into fly ash...
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doaj-8f7ff43f75a64a23b83f778179e6452f2020-11-25T03:13:22ZengPolitehnium Publishing HouseEuropean Journal of Materials Science and Engineering2537-43462537-43382020-09-015313314410.36868/ejmse.2020.05.03.133LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMERNg YONG-SING0 Liew YUN-MING1Mohd Mustafa Al Bakri ABDULLAH2Ng HUI-TENG3Ridho BAYUAJI4Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, MalaysiaCenter of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, MalaysiaCenter of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, MalaysiaCenter of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, MalaysiaCivil Engineering Department, Institut Teknologi Sepuluh Nopember, IndonesiaThis article reports the investigation on the effect of ladle furnace slag replacement on the flexural strength of thin fly ash-based geopolymer. The thin fly ash/slag geopolymers were prepared with the replacement of various percentages of ladle furnace slag (0%, 10%, 20%, 30% and 40%) into fly ash geopolymers with dimension of 160 mm × 40 mm × 10 mm. The thin geopolymerwas synthesised using 12M sodium hydroxide (NaOH) solution with solid-to-liquid (S/L) ratio of 2.5 and Na2SiO3 /NaOH ratio of 4.0. The curing temperature and time of samples were 60°C and 6 hours respectively. The mechanical properties of thin geopolymers was revealed using flexural test after 28 days. Several characterisation tools have been used including Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD) to correlate the flexural properties with the microstructure and phases of fly ash/slag geopolymers. Results obtained reported that a positive effect on flexural strength was observed with the increasing amount of slag. The thin fly ash geopolymers replaced with 40% of ladle furnace slag showed the highest flexural strength of 7.8 MPa. The rich CaO content in ladle furnace slag boosted the C-S-H gels formation which increased the flexural strength of thin geopolymers.https://ejmse.ro/articles/05_03_03_EJMSE-20-105.pdfthin geopolymerladle furnace slagreplacementfly ashflexural strength |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ng YONG-SING Liew YUN-MING Mohd Mustafa Al Bakri ABDULLAH Ng HUI-TENG Ridho BAYUAJI |
spellingShingle |
Ng YONG-SING Liew YUN-MING Mohd Mustafa Al Bakri ABDULLAH Ng HUI-TENG Ridho BAYUAJI LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER European Journal of Materials Science and Engineering thin geopolymer ladle furnace slag replacement fly ash flexural strength |
author_facet |
Ng YONG-SING Liew YUN-MING Mohd Mustafa Al Bakri ABDULLAH Ng HUI-TENG Ridho BAYUAJI |
author_sort |
Ng YONG-SING |
title |
LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER |
title_short |
LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER |
title_full |
LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER |
title_fullStr |
LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER |
title_full_unstemmed |
LADLE FURNACE SLAG REPLACEMENT ON THE FLEXURAL STRENGTH OF THIN FLY ASH GEOPOLYMER |
title_sort |
ladle furnace slag replacement on the flexural strength of thin fly ash geopolymer |
publisher |
Politehnium Publishing House |
series |
European Journal of Materials Science and Engineering |
issn |
2537-4346 2537-4338 |
publishDate |
2020-09-01 |
description |
This article reports the investigation on the effect of ladle furnace slag replacement on the flexural strength of thin fly ash-based geopolymer. The thin fly ash/slag geopolymers were prepared with the replacement of various percentages of ladle furnace slag (0%, 10%, 20%, 30% and 40%) into fly ash geopolymers with dimension of 160 mm × 40 mm × 10 mm. The thin geopolymerwas synthesised using 12M sodium hydroxide (NaOH) solution with solid-to-liquid (S/L) ratio of 2.5 and Na2SiO3 /NaOH ratio of 4.0. The curing temperature and time of samples were 60°C and 6 hours respectively. The mechanical properties of thin geopolymers was revealed using flexural test after 28 days. Several characterisation tools have been used including Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD) to correlate the flexural properties with the microstructure and phases of fly ash/slag geopolymers. Results obtained reported that a positive effect on flexural strength was observed with the increasing amount of slag. The thin fly ash geopolymers replaced with 40% of ladle furnace slag showed the highest flexural strength of 7.8 MPa. The rich CaO content in ladle furnace slag boosted the C-S-H gels formation which increased the flexural strength of thin geopolymers. |
topic |
thin geopolymer ladle furnace slag replacement fly ash flexural strength |
url |
https://ejmse.ro/articles/05_03_03_EJMSE-20-105.pdf |
work_keys_str_mv |
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