A review on geopolymer in potential coating application: Materials, preparation and basic properties

Jiang, Chenhui; Wang, Aiying; Bao, Xufan; Ni, Tongyuan; Ling, Jin Tian

doi:10.1016/j.jobe.2020.101734

Cited by 51 publications

(24 citation statements)

References 102 publications

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“…In recent years, geopolymer materials have been adopted in many fields, including construction and civil engineering (as binders, mortars, concretes, light weight panels and bricks for thermal and acoustic insulation, protective coating, low-cost ceramics, and fire protection structures) [ 2 , 3 , 4 , 5 , 6 , 7 ]. These fields are considered among the highest producers ofsolid waste in the world.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cement Clinker from Geopolymer-Based Wastes

et al. 2021

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In order to avoid potential environmental pollution from geopolymer-based material wastes, this work investigated the feasibility of using these materials as alternative raw materials in the preparation of cement clinker. The geopolymer binders and mortars were used as substitutes for natural mineral clays since they are rich in silica and alumina. Simulated geopolymer wastes were prepared by the activation of metakaolin or fly ash by an alkaline silicate solution. The cement-clinkers fired at 1450 °C for 1h were characterized by XRD, XRF, SEM-EDS, and a free lime (CaOf) content test. The anhydrous clinker mineral phases C3S (Ca3SiO5), C2S (Ca2SiO4), C3A (Ca3Al2O6), and C4AF (Ca4Al2Fe2O10) were well-crystallized in all investigated formulations. The free lime was lower than 1.3 wt% in all elaborated clinkers, which indicates a high degree of clinkerization. The results demonstrate that geopolymer binder and mortar materials are suitable substitutes for natural mineral clay incement clinker preparation.

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Section: Introductionmentioning

confidence: 99%

Preparation of Cement Clinker from Geopolymer-Based Wastes

et al. 2021

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“…Autoclaving is a process that requires the addition of chemicals, such as lime or gypsum, during the agglomeration phase. Autoclaving leads to the production of artificial aggregates with minimum binding material with a short curing time [ 1 , 72 ]. The commercialized autoclaved building products are usually prepared with calcareous materials including cement and quicklime, siliceous materials such as quartz sand or fly ash, and with H 2 O under pressurized steam at 125–200 °C, giving an insight into the potential of producing artificial aggregates using autoclaving.…”

Section: Processing and Producing Geopolymer-based Artificial Aggregatesmentioning

confidence: 99%

Geopolymer-Based Artificial Aggregates: A Review on Methods of Producing, Properties, and Improving Techniques

et al. 2022

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The depletion of aggregate-related natural resources is the primary concern of all researchers globally. Recent studies emphasize the significance of recycling and reusing various types of natural or by-product material waste from industry as a result of the building industry’s rising demand for aggregate as the primary component in concrete production. It has been demonstrated that the geopolymer system has exceptional features, such as high strength, superior durability, and greater resistance to fire exposure, making it a viable alternative to ordinary Portland Cement (OPC) concrete. This study will examine the present method utilized to generate artificial aggregate-based geopolymers, including their physical and mechanical properties, as well as their characterization. The production process of geopolymer derived from synthetic aggregates will be highlighted. In conjunction with the bonding of aggregates and the cement matrix, the interfacial transition zone (ITZ) is highlighted in this work as an additional important property to be researched in the future. It will be discussed how to improve the properties of geopolymers based on artificial aggregates. It has been demonstrated that cold bonding provides superior qualities for artificial aggregate while conserving energy during production. The creation of ITZ has a significant impact on the bonding strength between artificial aggregates and the cement matrix. Additionally, improvement strategies demonstrate viable methods for enhancing the quality of manufactured aggregates. In addition, other recommendations are discussed in this study for future work.

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“…Owing to their high compressive strength, low shrinkage, resistance to corrosive environments, and high thermal stability as well as a high capacity to encapsulate foreign materials within their structure (Silva et al 2019;Liang et al 2019b;Korniejenko et al 2020a;Lahoti et al 2020;Lemougna et al 2020), geopolymers have found useful applications not only in the construction industry but also for the immobilization of toxic waste and heavy metals, as well as coatings in various industries (Bazan et al 2020;Jiang et al 2020b). Currently, geopolymer composites are the most promising environmentally friendly alternative to traditional cementitious materials including OPC, because their use could significantly reduce CO2 emissions as a result of the low carbon footprint of the various raw materials from which they can be prepared (Sarmin et al 2014;Shalbafan et al 2016;Silva et al 2020).…”

Section: Geopolymers: Properties and Applicationsmentioning

confidence: 99%

Non-conventional mineral binder-bonded lignocellulosic composite materials: A review

Emmanuel

Kuqo

Mai

2021

BioRes

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The construction industry suffers from unsustainability and contributes more than any other industrial sector to carbon emissions that lead to global warming. Increasing economic and environmental concerns related to conventional energy- and CO2-intensive building materials have propelled the rapid and sustained expansion of research in the area of plant-based inorganic mineral binder-bonded materials for the construction industry. The resulting composites can be qualified as eco-responsible, sustainable, and efficient multifunctional building materials. So far, most of these research efforts have not received as much attention as materials based on ordinary Portland cement (OPC). To address this gap, this review focuses on mineral binder-based lignocellulosic composites made from non-conventional inorganic mineral binders/ cements with low embodied energy and low carbon footprint, namely hydrated lime-based binders, magnesium-based cement, alkali-activated cement, and geopolymers, as sustainable alternatives to OPC-bonded lignocellulosic composites (state-of-the-art). The emphasis here is on the application potentials, the influence of production parameters on the material properties/ performance, and recent advancement in this field. Finally, a prediction is provided of future trends for these non-conventional mineral binder-bonded lignocellulosic composites.

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A review on geopolymer in potential coating application: Materials, preparation and basic properties

Cited by 51 publications

References 102 publications

Preparation of Cement Clinker from Geopolymer-Based Wastes

Preparation of Cement Clinker from Geopolymer-Based Wastes

Geopolymer-Based Artificial Aggregates: A Review on Methods of Producing, Properties, and Improving Techniques

Non-conventional mineral binder-bonded lignocellulosic composite materials: A review

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