Synthesis of nano cementitious additives from agricultural wastes for the production of sustainable concrete

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9 Citations (Scopus)

Abstract

The cement and concrete production industries are widely acknowledged as one of the major contributors of carbon dioxide in the modern world. Extensive research have been undertaken over the years to enhance the sustainability and resilience aspects of these industries, as well as to neutralize their carbon footprint. This study aims to utilize palm oil fuel ash (POFA) and rice husk ash (RHA) to produce nano cementitious additives (NCA) for carbon-neutral cement (CNC). The performance of NCA was evaluated in ordinary Portland cement (OPC) concrete by replacing the OPC at dosages of 0.5% and 1.0%. CNC with 100% supplementary materials was activated with 2.5 M NaOH concentration. The activated CNC was used to replace OPC from 0% to 100% in concrete, and their workability, pozzolanic reactivity, and early-age and long-term compressive strength performances were analyzed. Subsequently, micro- and nano-scaled fibers were introduced into the mix with 100% CNC to enhance the flexural and tensile characteristics of the composite. The findings indicated that low-dosage of NCA (0.5%) resulted in increased early-age strength, whereas NCA at 1.0% enhanced the early-age and ultimate strength of the concrete. The inclusion of micro- and nano-scaled fibers contributed in enhancing the flexural characteristics of the concrete matrix. It can be deduced that NCA is feasible to function as strength enhancer for OPC or as an activator to produce CNC, thus offering a novel sustainable construction material and contributing towards greener construction.

Original languageEnglish
Pages (from-to)1150-1160
Number of pages11
JournalJournal of Cleaner Production
Volume171
DOIs
Publication statusPublished - 10 Jan 2018

Fingerprint

Agricultural wastes
Cements
cement
Concretes
Portland cement
Ashes
Carbon
carbon
Carbon footprint
Palm oil
Fibers
Fuel oils
ash
Activated carbon
Compressive strength
additive
agricultural waste
Cement
Sustainable development
Industry

Keywords

  • Carbon nano-fibers (CNF)
  • Carbon-neutral cement (CNC)
  • Nano cementitious additives (NCA)
  • Palm oil fuel ash (POFA)
  • Rice husk ash (RHA)
  • Sustainable concrete

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Strategy and Management
  • Industrial and Manufacturing Engineering

Cite this

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title = "Synthesis of nano cementitious additives from agricultural wastes for the production of sustainable concrete",
abstract = "The cement and concrete production industries are widely acknowledged as one of the major contributors of carbon dioxide in the modern world. Extensive research have been undertaken over the years to enhance the sustainability and resilience aspects of these industries, as well as to neutralize their carbon footprint. This study aims to utilize palm oil fuel ash (POFA) and rice husk ash (RHA) to produce nano cementitious additives (NCA) for carbon-neutral cement (CNC). The performance of NCA was evaluated in ordinary Portland cement (OPC) concrete by replacing the OPC at dosages of 0.5{\%} and 1.0{\%}. CNC with 100{\%} supplementary materials was activated with 2.5 M NaOH concentration. The activated CNC was used to replace OPC from 0{\%} to 100{\%} in concrete, and their workability, pozzolanic reactivity, and early-age and long-term compressive strength performances were analyzed. Subsequently, micro- and nano-scaled fibers were introduced into the mix with 100{\%} CNC to enhance the flexural and tensile characteristics of the composite. The findings indicated that low-dosage of NCA (0.5{\%}) resulted in increased early-age strength, whereas NCA at 1.0{\%} enhanced the early-age and ultimate strength of the concrete. The inclusion of micro- and nano-scaled fibers contributed in enhancing the flexural characteristics of the concrete matrix. It can be deduced that NCA is feasible to function as strength enhancer for OPC or as an activator to produce CNC, thus offering a novel sustainable construction material and contributing towards greener construction.",
keywords = "Carbon nano-fibers (CNF), Carbon-neutral cement (CNC), Nano cementitious additives (NCA), Palm oil fuel ash (POFA), Rice husk ash (RHA), Sustainable concrete",
author = "Lim, {Jacob Lok Guan} and Raman, {Sudharshan Naidu} and Lai, {Fook Chuan} and {Mohd. Zain}, {Muhammad Fauzi} and Roszilah Hamid",
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AU - Lim, Jacob Lok Guan

AU - Raman, Sudharshan Naidu

AU - Lai, Fook Chuan

AU - Mohd. Zain, Muhammad Fauzi

AU - Hamid, Roszilah

PY - 2018/1/10

Y1 - 2018/1/10

N2 - The cement and concrete production industries are widely acknowledged as one of the major contributors of carbon dioxide in the modern world. Extensive research have been undertaken over the years to enhance the sustainability and resilience aspects of these industries, as well as to neutralize their carbon footprint. This study aims to utilize palm oil fuel ash (POFA) and rice husk ash (RHA) to produce nano cementitious additives (NCA) for carbon-neutral cement (CNC). The performance of NCA was evaluated in ordinary Portland cement (OPC) concrete by replacing the OPC at dosages of 0.5% and 1.0%. CNC with 100% supplementary materials was activated with 2.5 M NaOH concentration. The activated CNC was used to replace OPC from 0% to 100% in concrete, and their workability, pozzolanic reactivity, and early-age and long-term compressive strength performances were analyzed. Subsequently, micro- and nano-scaled fibers were introduced into the mix with 100% CNC to enhance the flexural and tensile characteristics of the composite. The findings indicated that low-dosage of NCA (0.5%) resulted in increased early-age strength, whereas NCA at 1.0% enhanced the early-age and ultimate strength of the concrete. The inclusion of micro- and nano-scaled fibers contributed in enhancing the flexural characteristics of the concrete matrix. It can be deduced that NCA is feasible to function as strength enhancer for OPC or as an activator to produce CNC, thus offering a novel sustainable construction material and contributing towards greener construction.

AB - The cement and concrete production industries are widely acknowledged as one of the major contributors of carbon dioxide in the modern world. Extensive research have been undertaken over the years to enhance the sustainability and resilience aspects of these industries, as well as to neutralize their carbon footprint. This study aims to utilize palm oil fuel ash (POFA) and rice husk ash (RHA) to produce nano cementitious additives (NCA) for carbon-neutral cement (CNC). The performance of NCA was evaluated in ordinary Portland cement (OPC) concrete by replacing the OPC at dosages of 0.5% and 1.0%. CNC with 100% supplementary materials was activated with 2.5 M NaOH concentration. The activated CNC was used to replace OPC from 0% to 100% in concrete, and their workability, pozzolanic reactivity, and early-age and long-term compressive strength performances were analyzed. Subsequently, micro- and nano-scaled fibers were introduced into the mix with 100% CNC to enhance the flexural and tensile characteristics of the composite. The findings indicated that low-dosage of NCA (0.5%) resulted in increased early-age strength, whereas NCA at 1.0% enhanced the early-age and ultimate strength of the concrete. The inclusion of micro- and nano-scaled fibers contributed in enhancing the flexural characteristics of the concrete matrix. It can be deduced that NCA is feasible to function as strength enhancer for OPC or as an activator to produce CNC, thus offering a novel sustainable construction material and contributing towards greener construction.

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