Abstract
The aim of the study is to fabricate a new non-cement binder (NCB) using slag, palm oil fuel ash (POFA) and rice husk ash (RHA). To activate these materials, sodium hydroxide (NaOH) was used at 2.5%, 5.0% and 7.5% by weight of NCB. Four different mix ratios of the slag, POFA and RHA were designed to fabricate the NCB. Mortar-prisms of NCB were cast using water-to-binder ratio of 0.5 and 0.6 with required superplasticizer. Mortar specimens were immersed in a water bath at 25 ± 2 C for curing. NCB was tested for its consistency, setting time, flow, flexural and compressive strengths. XRD, SEM and FTIR analyses of NCB-mortars were also obtained. The results revealed that the consistency, setting time, flow and strength of NCB-paste/mortars are greatly influenced by the mix proportion and fineness of constituent materials of NCB, and NaOH doses. NCB-mortar containing 42% slag, 28% POFA and 30% RHA with 5% NaOH achieves the highest compressive strength of 40.68 MPa and a flexural strength of 6.57 MPa at 28 days. From the FTIR analysis, NCB-mortars are observed to have silica-hydrate bond with sodium or other inorganic metals (i.e., sodium-silica-hydrate-alumina gel). Therefore, NCB could be fabricated from the aforementioned materials.
| Original language | English |
|---|---|
| Pages (from-to) | 894-902 |
| Number of pages | 9 |
| Journal | Construction and Building Materials |
| Volume | 49 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- Non-cement binder Chemical activator (NaOH)
- Pozzolanic materials (slag, palm oil fuel ash, rice husk ash)
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)
Cite this
Fabrication of a non-cement binder using slag, palm oil fuel ash and rice husk ash with sodium hydroxide. / Karim, M. R.; Mohd. Zain, Muhammad Fauzi; Jamil, Maslina; Lai, F. C.
In: Construction and Building Materials, Vol. 49, 2013, p. 894-902.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of a non-cement binder using slag, palm oil fuel ash and rice husk ash with sodium hydroxide
AU - Karim, M. R.
AU - Mohd. Zain, Muhammad Fauzi
AU - Jamil, Maslina
AU - Lai, F. C.
PY - 2013
Y1 - 2013
N2 - The aim of the study is to fabricate a new non-cement binder (NCB) using slag, palm oil fuel ash (POFA) and rice husk ash (RHA). To activate these materials, sodium hydroxide (NaOH) was used at 2.5%, 5.0% and 7.5% by weight of NCB. Four different mix ratios of the slag, POFA and RHA were designed to fabricate the NCB. Mortar-prisms of NCB were cast using water-to-binder ratio of 0.5 and 0.6 with required superplasticizer. Mortar specimens were immersed in a water bath at 25 ± 2 C for curing. NCB was tested for its consistency, setting time, flow, flexural and compressive strengths. XRD, SEM and FTIR analyses of NCB-mortars were also obtained. The results revealed that the consistency, setting time, flow and strength of NCB-paste/mortars are greatly influenced by the mix proportion and fineness of constituent materials of NCB, and NaOH doses. NCB-mortar containing 42% slag, 28% POFA and 30% RHA with 5% NaOH achieves the highest compressive strength of 40.68 MPa and a flexural strength of 6.57 MPa at 28 days. From the FTIR analysis, NCB-mortars are observed to have silica-hydrate bond with sodium or other inorganic metals (i.e., sodium-silica-hydrate-alumina gel). Therefore, NCB could be fabricated from the aforementioned materials.
AB - The aim of the study is to fabricate a new non-cement binder (NCB) using slag, palm oil fuel ash (POFA) and rice husk ash (RHA). To activate these materials, sodium hydroxide (NaOH) was used at 2.5%, 5.0% and 7.5% by weight of NCB. Four different mix ratios of the slag, POFA and RHA were designed to fabricate the NCB. Mortar-prisms of NCB were cast using water-to-binder ratio of 0.5 and 0.6 with required superplasticizer. Mortar specimens were immersed in a water bath at 25 ± 2 C for curing. NCB was tested for its consistency, setting time, flow, flexural and compressive strengths. XRD, SEM and FTIR analyses of NCB-mortars were also obtained. The results revealed that the consistency, setting time, flow and strength of NCB-paste/mortars are greatly influenced by the mix proportion and fineness of constituent materials of NCB, and NaOH doses. NCB-mortar containing 42% slag, 28% POFA and 30% RHA with 5% NaOH achieves the highest compressive strength of 40.68 MPa and a flexural strength of 6.57 MPa at 28 days. From the FTIR analysis, NCB-mortars are observed to have silica-hydrate bond with sodium or other inorganic metals (i.e., sodium-silica-hydrate-alumina gel). Therefore, NCB could be fabricated from the aforementioned materials.
KW - Non-cement binder Chemical activator (NaOH)
KW - Pozzolanic materials (slag, palm oil fuel ash, rice husk ash)
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UR - http://www.scopus.com/inward/citedby.url?scp=84885123935&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2013.08.077
DO - 10.1016/j.conbuildmat.2013.08.077
M3 - Article
VL - 49
SP - 894
EP - 902
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
ER -