Incorporation of organic liquids into geopolymer materials - A review of processing, properties and applications

Reeb, Charles; Pierlot, Christel; Davy, Catherine; Lambertin, David

doi:10.1016/j.ceramint.2020.11.239

Cited by 58 publications

(30 citation statements)

References 125 publications

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“…Figures 7-9 schematically illustrates three ways to intro-duce organic liquids into ordinary Portland cement (OPC) or geopolymers (GP). Table 1 compares these methods and describes their advantages and disadvantages [49].…”

Section: Methods Of Incorporation Of Pcm Into Geopolymers and Concretementioning

confidence: 99%

Review of Solutions for the Use of Phase Change Materials in Geopolymers

et al. 2021

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The paper deals with the possibility of using Phase Change Materials (PCM) in concretes and geopolymer composites. The article presents the most important properties of PCM materials, their types, and their characteristics. A review of the latest research results related to their use in geopolymer materials is presented. The benefits of using PCM in building materials include the improvement of thermal comfort inside the building, and also the fact that the additive in the form of PCM reduces thermal gradients and unifies the temperature inside the concrete mix, which can reduce the risk of cracking. The paper also presents a critical analysis related to the feasibility of mass scale implementations of such composites. It was found that the use of PCM in sustainable construction is necessary and inevitable, and will bring a number of benefits, but it still requires large financial resources and time for more comprehensive research. Despite the fact that PCM materials have been known for many years, it is necessary to refine their form to very stable phases that can be used in general construction as well as to develop them in a cost-effective form. The selection of these materials should also be based on the knowledge of the matrix material.

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Section: Methods Of Incorporation Of Pcm Into Geopolymers and Concretementioning

confidence: 99%

Review of Solutions for the Use of Phase Change Materials in Geopolymers

et al. 2021

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“…Preparation of porous geopolymer spheres has become a new alternative to bulk porous geopolymer 14,165 . Porous spheres have the advantages of large specific surface area and low flow resistance due to their unique structure 108 .…”

Section: Preparation Of Porous Geopolymermentioning

confidence: 99%

A review on the porous geopolymer preparation for structural and functional materials applications

Chen

et al. 2022

Int J Applied Ceramic Tech

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Geopolymer (also called inorganic polymers) is a kind of amorphous gel material with a 3D structure consisting of SiO4 and AlO4 tetrahedra. It has drawn international attention due to its environmental friendliness and excellent performance. This review covers raw materials, preparation methods, and applications of porous geopolymer materials with micropore, mesopore, or macropore. The preparation methods can be divided into five categories: (i) self‐forming method, (ii) direct foaming method, (iii) adding filler method, (iv) particles stacking method, and (v) other methods. In this paper, different raw materials and applications were combined with the preparation methods, and some general conclusions of porous geopolymer were summarized. The applications of porous geopolymer materials in building materials, adsorbents, porous ceramics, membrane separation, catalyst, pH regulator, and other fields were introduced as well.

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“…With improved pore connectivity, the porosity and specific surface area of geopolymer foams increase accordingly. It means that geopolymer foams can be more widely used in wastewater treatment (adsorption of heavy metals [ 14 , 15 , 16 ] and organic pollutants dissolved in water [ 17 ]) and the preparation of functionalized composite materials [ 18 , 19 ]. Therefore, the regulation and optimization of the pore structure in geopolymer foams have become one of the top research hotspots in this field.…”

Section: Introductionmentioning

confidence: 99%

“…Foam stabilizers can elevate the stability of foams by strengthening the molecular structure of the pore walls and reducing the surface tension of the mixture [ 3 ]. Some surfactants or stabilizing agents, such as sodium dodecyl sulfate (SDS) [ 28 , 29 ], sodium lauryl ether sulfate (SLES) [ 5 ], tween80 [ 30 ], and vegetable oils [ 17 , 27 , 31 ], are often used as foaming stabilizers to prepare geopolymer foams in combination with foaming agents [ 5 , 17 , 27 , 28 , 29 , 30 , 31 ]. Compared to those prepared with other foam stabilizers, geopolymer foams that are fabricated using vegetable oils have higher porosity [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Performance Evaluation of Metakaolin-Based Geopolymer Foams Obtained by Adding Palm Olein as the Foam Stabilizer

Wang

et al. 2022

Materials

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Geopolymer foams with different pore structures can be used in construction, water treatment, and heavy metal adsorption. The preparation of high porosity geopolymer foams using vegetable oil as a foam stabilizer is a feasible and cost-effective route. In this study, metakaolin-based geopolymer foams with hierarchical pore structures were fabricated by adding H2O2 as the foaming agent with palm olein as the foam stabilizer. The effects of H2O2 and palm olein content on the chemical features and pore structure of geopolymer foams were evaluated. Water absorption, thermal conductivity, and mechanical behaviors of geopolymer foams were also investigated. The results indicate that fatty acid salt surfactants were generated in situ in the geopolymer matrix due to the addition of palm olein. Geopolymer foams with H2O2 and palm olein addition possess a homogeneously concentrated macropore distribution. Palm olein exhibits a refining effect on intrinsic pores formed by geopolymerization. In addition, using appropriate amounts of palm olein and H2O2, geopolymer foams can achieve higher open porosity and better pore connectivity, resulting in the improvement of water absorption and thermal insulation capacity.

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Incorporation of organic liquids into geopolymer materials - A review of processing, properties and applications

Cited by 58 publications

References 125 publications

Review of Solutions for the Use of Phase Change Materials in Geopolymers

Review of Solutions for the Use of Phase Change Materials in Geopolymers

A review on the porous geopolymer preparation for structural and functional materials applications

Characterization and Performance Evaluation of Metakaolin-Based Geopolymer Foams Obtained by Adding Palm Olein as the Foam Stabilizer

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