Economic Analysis of Geopolymer Brick Manufacturing: A French Case Study

Youssef, Nicolas; Lafhaj, Zoubeir; Chapiseau, Christophe

doi:10.3390/su12187403

Cited by 16 publications

(7 citation statements)

References 40 publications

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“…An alternative solution to fired clay bricks is represented by geopolymer masonry units. Geopolymers, invented and developed by Joseph Davidovits since the 1970s [84], are now also used for the production of ecological concrete or masonry units [85].…”

Section: Geopolymers Masonry Unitsmentioning

confidence: 99%

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Recycling of Mining Waste in the Production of Masonry Units

et al. 2022

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Masonry units made of clay or Autoclaved Aerated Concrete (AAC) are widely used in constructions from Romania and other countries. Masonry units with superior mechanical and thermal characteristics can improve the energy efficiency of buildings, especially when they are used as the main solutions for building envelope construction. Their production in recent years has increased vertiginously to meet the increased demand. Manufactured with diversified geometries, different mechanical and/or thermal characteristics have a high volume in the mass of the building and a major influence in their carbon footprint. Starting from the current context regarding the target imposed by the long-term strategy of built environment decarbonization, the aim of the paper is to analyze the potential of reusing mining waste in the production of masonry units. Mining waste represents the highest share of waste generated at national level and may represent a valuable resource for the construction industry, facilitating the creation of new jobs and support for economic development. This review presents the interest in integrating mining wastes in masonry unit production and the technical characteristics of the masonry units in which they have been used as raw materials in different percentages. Critical assessment framework using SWOT analysis highlights the key sustainability aspects (technical, environmental, social, economic) providing a comprehensive and systematic analysis of the advantages and disadvantages regarding the integration of mining waste as secondary raw materials into masonry units production.

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Section: Geopolymers Masonry Unitsmentioning

confidence: 99%

“…Geopolymers are obtained following a chemical reaction between aluminosilicates oxides and hydroxide and/or alkaline silicate solutions (NaOH; KOH) [85,86], processed at a temperature below 100 • C to reduce water evaporation [87]. The advantages of using geopolymers consist in saving energy and CO 2 emissions [86].…”

Section: Geopolymers Masonry Unitsmentioning

confidence: 99%

Recycling of Mining Waste in the Production of Masonry Units

et al. 2022

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“…Whereas, the compressive strength has reached up to 62 MPa while OPC based concrete showed up to 21 MPa [11]. In addition, energy and cost analysis of geopolymer brick synthesis in comparison with conventional bricks was found more economical as the production gained 5% profit for the development of slag-based geopolymer bricks [12]. In case of embodied energy of the geopolymer, the fly ash based manufactured geopolymer synthesis showed 40% less energy requirement as compared to cement-based concrete.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Industrial By-Products/Waste to Manufacture Geopolymer Cement/Concrete

Azad

Samarakoon

2021

Sustainability

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There has been a significant movement in the past decades to develop alternative sustainable building material such as geopolymer cement/concrete to control CO2 emission. Industrial waste contains pozzolanic minerals that fulfil requirements to develop the sustainable material such as alumino-silicate based geopolymer. For example, industrial waste such as red mud, fly ash, GBFS/GGBS (granulated blast furnace slag/ground granulated blast furnace slag), rice husk ash (RHA), and bagasse ash consist of minerals that contribute to the manufacturing of geopolymer cement/concrete. A literature review was carried out to study the different industrial waste/by-products and their chemical composition, which is vital for producing geopolymer cement, and to discuss the mechanical properties of geopolymer cement/concrete manufactured using different industrial waste/by-products. The durability, financial benefits and sustainability aspects of geopolymer cement/concrete have been highlighted. As per the experimental results from the literature, the cited industrial waste has been successfully utilized for the synthesis of dry or wet geopolymers. The review revealed that that the use of fly ash, GBFS/GGBS and RHA in geopolymer concrete resulted high compressive strength (i.e., 50 MPa–70 MPa). For high strength (>70 MPa) achievement, most of the slag and ash-based geopolymer cement/concrete in synergy with nano processed waste have shown good mechanical properties and environmental resistant. The alkali-activated geopolymer slag, red mud and fly ash based geopolymer binders give a better durability performance compared with other industrial waste. Based on the sustainability indicators, most of the geopolymers developed using the industrial waste have a positive impact on the environment, society and economy.

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“…Geopolymer-based adsorbent possesses exceptional pollutant removal properties [23][24][25]. The geopolymer characteristics have made it a feasible and environmentally friendly option, compared to other materials such as biochar, zeolite and activated carbon, because of its more sustainable production process, which absorbs low energies and by-products [26][27][28]. Kaolin has the potential to be used as a raw material or an aluminosilicate source of geopolymer due to its high content of alumina and silica, which contributes to the formation of geopolymer based on sharing atoms of the (SiO4) 4− and (AlO4) 5− that may exist in poly-sialate form, poly sialatedisiloxo and other sialate linkages [29].…”

Section: Introductionmentioning

confidence: 99%

Effect of Aluminium Powder on Kaolin-Based Geopolymer Characteristic and Removal of Cu2+

et al. 2021

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This current work focuses on the synthesis of geopolymer-based adsorbent which uses kaolin as a source material, mixed with alkali solution consisting of 10M NaOH and Na2SiO3 as well as aluminium powder as a foaming agent. The experimental range for the aluminium powder was between 0.6, 0.8, 1.0 and 1.2wt%. The structure, properties and characterization of the geopolymer were examined using X-Ray Diffraction (XRD), Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Adsorption capacity and porosity were analysed based on various percentages of aluminium powder added. The results indicate that the use of aluminium powder exhibited a better pore size distribution and higher porosity, suggesting a better heavy metal removal. The maximum adsorption capacity of Cu2+ approached approximately 98%. The findings indicate that 0.8% aluminium powder was the optimal aluminium powder content for geopolymer adsorbent. The removal efficiency was affected by pH, adsorbent dosage and contact time. The optimum removal capacity of Cu2+ was obtained at pH 6 with 1.5 g geopolymer adsorbent and 4 h contact time. Therefore, it can be concluded that the increase in porosity increases the adsorption of Cu2+.

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Economic Analysis of Geopolymer Brick Manufacturing: A French Case Study

Cited by 16 publications

References 40 publications

Recycling of Mining Waste in the Production of Masonry Units

Recycling of Mining Waste in the Production of Masonry Units

Utilization of Industrial By-Products/Waste to Manufacture Geopolymer Cement/Concrete

Effect of Aluminium Powder on Kaolin-Based Geopolymer Characteristic and Removal of Cu2+

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