Fabrication of a non-cement binder using slag, palm oil fuel ash and rice husk ash with sodium hydroxide

M. R. Karim, Muhammad Fauzi Mohd. Zain, Maslina Jamil, F. C. Lai

Research output: Contribution to journalArticle

68 Citations (Scopus)

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 languageEnglish
Pages (from-to)894-902
Number of pages9
JournalConstruction and Building Materials
Volume49
DOIs
Publication statusPublished - 2013

Fingerprint

Ashes
Sodium Hydroxide
Palm oil
Fuel oils
Slags
Binders
Sodium
Fabrication
Mortar
Silicic Acid
Hydrates
Bending strength
Compressive strength
palm oil
Silica
Adhesive pastes

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

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title = "Fabrication of a non-cement binder using slag, palm oil fuel ash and rice husk ash with sodium hydroxide",
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.",
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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.

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