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Łach, M.; Pławecka, K.; Bąk, A.; Adamczyk, M.; Bazan, P.; Kozub, B.; Korniejenko, K.; Lin, W. Use of Phase Change Materials in Geopolymers. Encyclopedia. Available online: (accessed on 16 April 2024).
Łach M, Pławecka K, Bąk A, Adamczyk M, Bazan P, Kozub B, et al. Use of Phase Change Materials in Geopolymers. Encyclopedia. Available at: Accessed April 16, 2024.
Łach, Michał, Kinga Pławecka, Agnieszka Bąk, Marcin Adamczyk, Patrycja Bazan, Barbara Kozub, Kinga Korniejenko, Wei-Ting Lin. "Use of Phase Change Materials in Geopolymers" Encyclopedia, (accessed April 16, 2024).
Łach, M., Pławecka, K., Bąk, A., Adamczyk, M., Bazan, P., Kozub, B., Korniejenko, K., & Lin, W. (2024, March 04). Use of Phase Change Materials in Geopolymers. In Encyclopedia.
Łach, Michał, et al. "Use of Phase Change Materials in Geopolymers." Encyclopedia. Web. 04 March, 2024.
Use of Phase Change Materials in Geopolymers

Phase change materials (PCM) were known already in the 1970s (similarly to geopolymers), but their development is observed today. This is related to the possibility of obtaining a stable phase as well as the possibility of optimization of construction materials concerning the construction needs. These materials can change their physical state depending on the ambient temperature. The most common method is liquid-solid conversion. In the area of application of phase change materials in the construction industry, examples of such materials include organic materials (paraffin, fatty acids), inorganic materials, and eutectics. 

geopolymer phase change materials sustainable material technologies building composites

1. Introduction

Energy is a key element in assessing the progress of society around the world in various aspects such as technological development, environmental protection, and economic progress. The continuous depletion of non-renewable energy resources leads to the major problem of global warming. This is prompting scientists to change their approach for better and cleaner use of energy. With a higher standard of living and technological growth, the electricity demand is increasing day by day, leading to excessive consumption of fossil fuels. Minimizing the amount of consumed energy can reduce environmental pollution and also have a positive impact on the energy market.
The production of the most important building material of the 20th century, Portland cement, is associated with significant environmental pollution and energy problems. It is produced at very high temperatures of the order of 1400–1500 °C. During production, significant amounts of carbon dioxide and highly toxic nitrogen oxides are emitted into the atmosphere. The building sector is responsible for huge energy consumption which is estimated to be around 40% worldwide—of which, residential buildings consume 27% of energy and contribute 17% of CO2 emissions to the environment [1]. This is due to rapid population growth and changing standards of lifestyle. Such high energy demand is reflected in significant environmental pollution and degradation. To avoid the negative effects of excessive energy consumption, sustainable building materials are increasingly being developed [2]. In recent years, sustainable technologies and materials for the construction sector have begun to develop very quickly in Poland and in the rest of the world.
In recent years, alkali-activated binders/geopolymer cement and concrete seem to be an alternative to conventional concrete. Alkali activated binders are produced by alkaline activation of aluminosilicate raw materials such as blast furnace slag (GGBFS), fly ash (FA), metakaolin (MK), etc. These binders can solve the problems of the construction industry and waste generation. Therefore, since calcium-rich raw materials, especially slags, are limited, more attention is paid to raw materials with a low calcium content, from which geopolymers are produced [3]. In 1978, Joseph Davidovitz first coined the term “geopolymer” [4]. The term geopolymer covers the class of modern, environmentally-friendly, inorganic, amorphous, synthetic aluminosilicates with specific composition and properties [5]. Geopolymers are three-dimensional aluminosilicate framework structures from amorphous to semi-crystalline, which are formed by a combination of [SiO4]4− and [AlO4]5− tetrahedra. The structure remains electrically neutral as a result of the replacement of aluminum by silicon in the tetrahedral layer with available alkalis, such as Na+ [6]. The mechanism of setting and hardening of geopolymer is not fully understood. The geopolymerization process can be carried out by dissolving raw materials containing aluminosilicate in alkaline solutions, which leads to the formation of aluminate and silicate monomers. Then they turn into oligomers and then into geopolymers [5]. Research on geopolymers is conducted mainly to replace conventional cement with them and, consequently, to use them on a large scale in construction. Concrete made from geopolymer cements has received considerable attention because of their low cost, good engineering properties as well as low energy consumption. Materials of this type are used in specific areas, where their unique properties, such as very high fire resistance, chemical corrosion resistance, high mechanical strength, and excellent durability, are important [3][7][8][9][10][11][12]. Geopolymers are characterized by better performance compared to concrete and, importantly, large amounts of by-products (fly ash, coal ash, and blast furnace slag) are used on production [13][14][15][16][17][18].
Despite the existence of building materials that are more environmentally friendly than conventional cement, there is still a need to improve the energy efficiency of buildings and reduce emissions of substances that are harmful to the earth’s atmosphere.
One of the solutions to reduce the negative impact on the environment is the application of phase change materials (PCM) [19]. Due to the declining supply of fossil fuels, in the last few years, phase change materials have attracted the interest of a wide range of researchers, organizations, and benefactors as they store thermal energy and release it when needed [20][21]. This is evidenced by research in various fields, such as the electronics industry [22], photovoltaic and solar systems [23][24], hot water systems [25].
Phase change materials (PCM) were known already in the 1970s (similarly to geopolymers), but their development is observed today. This is related to the possibility of obtaining a stable phase as well as the possibility of optimization of construction materials concerning the construction needs. These materials can change their physical state depending on the ambient temperature. The most common method is liquid-solid conversion. In the area of application of phase change materials in the construction industry, examples of such materials include organic materials (paraffin, fatty acids), inorganic materials, and eutectics. Most inorganic PCMs are characterized by large volume changes and potential subcooling, which has led to the wider use of organic PCMs in combination with concrete [26]. The most commonly used organic materials are in the form of microcapsules. Organic paraffin was considered as the best phase change material for concrete mortar due to its stability and inertness in an alkaline environment [27]. However, this material also has some limitations, such as low thermal conductivity, flammability, incompatibility with plastics, and large volume changes [28]. The choice of PCM material and the method of its incorporation is determined by e.g., the temperature range of phase transitions, the effective heat capacity, and the stability of the material during cyclic transitions. Phase change materials can have up to several times higher heat capacity than traditional construction materials. It is extremely important to use phase change materials in appropriate types of building materials. As research indicates, geopolymers may be a better option for these types of systems than traditional building materials [29]. The way PCM works in geopolymers is shown schematically in Figure 1.
Figure 1. The mode of action of phase change materials.
The incorporation of microencapsulated phase change materials (MPCMs) in structural applications can improve the thermal energy storage capacity, thereby lowering the energy demand in buildings [30]. The addition of MPCM reduces the workability and mechanical strength of concrete. However, the type, quantity, and proportion of raw materials curing time, and temperature should be considered when formulating geopolymer concrete (GPC) [31].
Phase change materials have a high latent heat storage density, so they can absorb thermal energy when they transform from a solid to a liquid or release it when they transform to a solid state. Due to this property, PCM can function as a heating and cooling system in the building industry. During the day it absorbs excess thermal energy in a building component through a melting process, while at reduced temperatures (at night) it solidifies and releases thermal energy back into the environment.
PCM can be introduced into building components in three ways. The first method is to add it directly during the mixing process. Another method is to immerse the building structure in liquid PCM. The third method is the most advanced and popular, and consists of encapsulation of micro or macro PCM. It allows for better particle dispersion, reduces external volume changes, but also eliminates interaction between the phase change material and the starting material. Microencapsulation of phase change material is now an industrialized process, so it is very expensive and the product itself has been limited to only a few companies worldwide [32]. The addition of phase change materials to the inner layer of the partition will produce several beneficial phenomena not only related to thermal comfort inside the building [33][34][35] but also, among others, that the addition in the form of PCM reduces thermal gradients and unifies the temperature inside the concrete mix, which may reduce the risk of cracking. Phase change materials can also be added to interior finishes such as gypsum wallboard [36][37]. The addition of such materials results in a reduction of costs of heating or cooling buildings, and an increase in energy efficiency in rooms as well as increased comfort for users.

2. Characteristics and Classification of Phase Change Materials

A material with a phase change is a compound or a group of compounds capable of absorbing and releasing large amounts of energy depending on the phase change they are currently in. The basic properties characterizing PCM are primarily the ability to heat accumulation and thermal conductivity of the substance. In addition, the behavior of the substance in superheated and subcooled conditions. These materials are characterized by a certain range and value of temperature at which the phase transformation occurs [38][39]. Phase change materials are also known as materials with the ability to accumulate so-called “latent” heat. The transfer of thermal energy takes place when a material changes from one phase to another, i.e., from a liquid to a solid or from a solid to a liquid state. Initially, these materials behave like conventional heat accumulators such as water—they increase in temperature as heat is supplied. However, PCMs absorb and release heat at an almost constant temperature. They can absorb 5 to 14 times more heat than standard materials [40]. To realize the full potential of phase change materials, they must meet some requirements from thermal, physical, chemical, and kinetic aspects. In addition, an important aspect of using a particular type of material is the economic aspect and the availability of materials [41][42].
Considering thermal issues, these materials should have high latent heat per unit volume. This aspect is extremely important because of the potential size of the heat accumulator. With high latent heat, the size of the heat storage can be minimized. The high thermal conductivity of such a material significantly facilitates the heat loading and unloading process. Small volume changes during phase transitions and low vapor pressure at working temperatures are other basic characteristics that PCMs should meet from the physical point of view. The basic chemical requirements for PCM are non-toxicity, non-flammability, and low probability of an explosion. During selections of phase change materials, it must be remembered not to subcool them, as this significantly impedes the dissipation of stored heat. Subcooling of the PCM by as little as 5–10 °C can cause complete blocking of the ability to transfer stored heat [40][41][42][43].
The basic criterion for the distinction of phase change materials is the structure and chemical composition. There are three basic classifications of phase change materials: organic, non-organic materials, and mixed (eutectic). Figure 2 shows the main types of phase change materials.
Figure 2. Classifications of phase change materials.
The use of a particular type of PCM has its advantages and disadvantages compared to other types. Based on the literature sources, several advantages and disadvantages for organic and inorganic PCMs were summarized. Starting from organic PCMs, their greatest advantages are compatibility with conventional common materials and high synthesis temperature [24]. In addition, they have self-nucleating properties and are safe and non-toxic. The disadvantages of organic PCMs include flammability and relatively low volumetric capacity to store latent heat [44]. They are also characterized by low thermal conductivity. In the case of non-organic materials, their greatest advantage is their low cost and high availability. Unlike organic materials, they are characterized by high latent heat storage capacity and high thermal conductivity. Like organic materials, they have a high synthesis temperature. Considering the most important disadvantages of inorganic phase change materials are their corrosion and frequent volume change in some mixtures. In addition, in the case of this type of PCM there is a high risk of subcooling of the substance [21].
Currently, dozens of large companies are involved in the production of phase change materials as well as finished products. The most well-known include, among others: Rubitherm, Doerken, BASF (Berlin, Germany), PCM Products (Peterborough, UK), PureTemp LLC (Minneapolis, USA), Climator (Skovde, Sweden), Cristopia (Vence, France), Mitsubishi Chemical (Kurashiki, Japan), TEAP Energy (Melbourne, Australia), PCM (Suzhou, China), PlusPolymer (Haryna, India) [45].
A very interesting solution is the PCM materials introduced by e.g., RUBITHERM in the form of dry powder (PX) and granulates (GR) in an inorganic matrix. These should not be confused with microencapsulated PCM. Their appearance is shown in Figure 3. The organic part in PX material is about 60% while in GR variety it is 30%. The particle size of the PX inorganic carrier matrix is 200 µm. According to the manufacturer, PX materials are also more economical compared to microencapsulated PCM, but it should be taken into account that microencapsulated PCM cannot be replaced. The diameter of GR granules is about 1–3 mm. GR is used in the food and beverage industry and as a filler for accumulation plates [46].
Figure 3. PCM granules manufactured by RUBITHERM [46].
Various manufacturers also offer PCM materials in other forms: encapsulated in plastic beads, stainless steel, steel tubes, pouches, ceramic materials. There are more and more solutions on the market, but many of them are designed and manufactured for food manufacturers and packaging manufacturers. There is also great development in the field of energy storage. However, there is still a lot of room for improvement when it comes to building materials. It should be remembered that this is a huge sector that can contribute to a significant increase in demand for MSM and consequently reduce the environmental impact on people. But this requires continuous improvement of these materials and adapting them to changing technologies.

3. Methods of Incorporation of PCM into Geopolymers and Concrete

One of the most significant problems in creating geopolymer composites with PCMs is how to place the PCM materials in the matrix. This is also true for conventional concrete composites. Using the wrong form may result in the little effect of the PCM addition, or the entire PCM material may be destroyed or removed after some time.
There are 4 main methods of incorporation of PCM into geopolymer:
  • Microencapsulation (PCMs are enclosed in spherical shells),
  • Shape stabilized PCMs (Molten PCM is directly absorbed into powdered porous structure like graphite powder, silica fume, etc. having higher thermal conductivity),
  • Porous aggregate inclusions (Molten PCM is absorbed or impregnated into porous light weight aggregates having large surface area and aggregate size such as expanded perlite, expanded clay, pumice, etc.),
  • Macroencapsulation (PCMs are incorporated into building components such as roofs or walls).
The use of stabilized forms of PCM (i.e., encapsulated or impregnated PCM) in porous support materials, such as expanded graphite or expanded perlite, in geopolymer mortar, can result in better mechanical and thermal properties compared to geopolymer containing neat PCM alone [2]. Besides, usage of PCM in free form—not encapsulated or encapsulated—can lead to several problems related to the spillage of PCM content outside the materials.
The literature describes various methods for adding organic liquids to cement-based or geopolymer-based materials. Figure 4, Figure 5 and Figure 6 schematically illustrates three ways to introduce organic liquids into ordinary Portland cement (OPC) or geopolymers (GP). Table 1 compares these methods and describes their advantages and disadvantages [47].
Figure 4. Schematic of direct addition of organic liquids to OPC (ordinary Portland cement) and AAM (alkali-activated) materials.
Figure 5. Preemulsification schematic of organic liquids added to OPC (ordinary Portland cement) and AAM (alkali-activated) materials.
Figure 6. Combined method of adding organic liquids added to OPC (ordinary Portland cement) and AAM (alkali activated) materials.
Table 1. Advantages and disadvantages of three incorporation processing routes (based on [34][47]).



Direct method

  • No additives required,

  • Easy, one-step process,

  • A large amount of oil

  • Phase separation can take place before setting up the process


  • Large quantity of oil,

  • Controlled oil droplet size,

  • Phase separation controlled by preemulsification

  • Two-step process,

  • The addition of surfactants required


  • No phase separation,

  • Leaching of toxic compounds

  • Two-step process,

  • Requires addition of solid adsorbent,

  • High cost of solid adsorbent

4. PCM in Geopolymers—Effect on Insulation Properties

The use of PCM materials in geopolymers were widely described in [48][49][50], among others. This idea came about the same time that PCMs were added and studied in conventional concretes. Since it is, however, a different type of matrix, often with a very high pH, the issue of PCM addition to geopolymers should be considered separately from concretes based on Portland cement, even though the properties of such composites and their application may be similar.
Selected results of studies on geopolymers with PCM are presented below, mainly with respect to the influence of PCM on thermal properties of geopolymer composites. Only selected results are presented, and the focus is on presenting different forms in which PCM were introduced e.g., powder, encapsulated in graphite, encapsulated in polyurethane foams, microcapsules, encapsulated PCM, etc. Table 2 summarizes the most important information.
Table 2. Research (selected) summary of geopolymer containing PCM.

Name of PCM


Core Material of PCM

Melting Point of PCM [°C]

Heat Capacity of PCM [kJ/kg]

Form of Applied Matrix for PCM before Incorporation into Geopolymer

Application Effect in Material



Rubiterm, Berlin, Germany




Polyurethane foam, covered with geopolymer paste

Protection against overheating as a passive cooling system



Microtek Laboratories, Inc., Dayton, OH, USA




Polymer shells (microcapsules)

Damping function, less temperature fluctuation; increase in heat capacity



Avantis Company La- Boratorium Berhad, Ipoh, Perak, Malaysia


No data


Expanded graphite + CaCl2/sodium silicate coating


Storing thermal energy and releasing it as latent heat



No data

Eutectic BaCl2 + KCl + NaCl

No data


ZYP coating or Aremco coating or ZAG coatin + geopolymer shells

Reduction in latent heat of all samples



No data




Commercial synthetic rubber emulsion (Sika Latex), commercial liquid waterproofing membrane (Weber dry-lastick), polyester resin adhesive with hardener and catalyst

The aggregate covered with PCM material allows for the storage of thermal energy and return it as latent hea



Rubitherm, Berlin, Germany




Polymer shells (microcapsules)

Reduction in energy consumption for internal temperature stabilisation by 18.5 ± 0.3%


Micronal DS-5038X

Microtek Laboratories, Inc. Dayton, OH, USA




Polymer shells (microcapsules)

Reduction in energy consumption for internal temperature stabilisation by 20.1 ± 0.7%



Rubitherm, Berlin, Germany




Composite made by vacuum mixing hydrophobic expanded perlite (EP) and paraffin in a 1:1 ratio

Geopolymer foam concrete (GFC) showed little temperature variation and little loss



  1. Allouhi, A.; El Fouih, Y.; Kousksou, T.; Jamil, A.; Zeraouli, Y.; Mourad, Y. Energy consumption and efficiency in buildings: Current status and future trends. J. Clean. Prod. 2015, 109, 118–130.
  2. Muraleedharan, M.; Nadir, Y. Geopolymer mortar integrated with phase change materials for improvement of thermal efficiency in buildings: A review. Mater. Today Proc. 2020, 44, 878–885.
  3. Singh, N.B.; Middendorf, B. Geopolymers as an alternative to Portland cement: An overview. Constr. Build. Mater. 2020, 237, 117455.
  4. Davidovits, J. Geopolymer Chemistry and Applications, 4th ed.; Institut Géopolymère: Saint-Quentin, France, 2015.
  5. Cong, P.; Yaqian Cheng, Y. Advances in geopolymer materials: A comprehensive review. J. Traffic Transp. Eng. Engl. Ed. 2021, 8, 283–314.
  6. El Hafid, K.; Hajjaji, M.; Hafid, H.E. Influence of NaOH concentration on microstructure and properties of cured alkali-activated calcined clay. J. Build. Eng. 2017, 11, 158–165.
  7. Aiken, T.A.; Kwasny, J.; Sha, W.; Soutsos, M.N. Effect of slag content and activator dosage on the resistance of fly ash geopolymer binders to sulfuric acid attack. Cem. Concr. Res. 2018, 111, 23–40.
  8. Aliques-Granero, J.; Tognonvi, M.T.; Tagnit-Hamou, A. Durability study of AAMs: Sulfate attack resistance. Constr. Build. Mater. 2019, 229, 117100.
  9. Lahoti, M.K.; Tan, K.H.; Yang, E.H. A critical review of geopolymer properties for structural fire-resistance applications. Constr. Build. Mater. 2019, 221, 514–526.
  10. Shill, S.K.; Al-Deen, S.; Ashraf, M.; Hutchison, W. Resistance of fly ash based geopolymer mortar to both chemicals and high thermal cycles simultaneously. Constr. Build. Mater. 2020, 239, 117886.
  11. Ciemnicka, J.; Prałat, K.; Koper, A.; Makomaski, G.; Majewski, Ł.; Wójcicka, K.; Buczkowska, K.E. Changes in the Strength Properties and Phase Transition of Gypsum Modified with Microspheres, Aerogel and HEMC Polymer. Materials 2021, 14, 3486.
  12. Vafaei, M.; Allahverdi, A.; Dong, P.; Bassim, N. Acid attack on geo-polymer cement mortar based on waste-glass powder and calcium aluminate cement at mild concentration. Constr. Build. Mater. 2018, 193, 363–372.
  13. Gado, R.A.; Hebda, M.; Lach, M.; Mikula, J. Alkali activation of waste clay bricks: Influence of the silica modulus, SiO2/Na2O, H2O/Na2O molar ratio, and liquid/solid ratio. Materials 2020, 13, 383.
  14. Łach, M. Geopolymer foams—Will they ever become a viable alternative to popular insulation materials?—A critical opinion. Materials 2021, 14, 3568.
  15. Łach, M.; Korniejenko, K.; Mikuła, J. Thermal insulation and thermally resistant materials made of geopolymer foams. Proc. Eng. 2016, 151, 410–416.
  16. Korniejenko, K.; Łach, M. Geopolymers reinforced by short and long fibres–innovative materials for additive manufacturing. Curr. Opin. Chem. Eng. 2020, 28, 167–172.
  17. Łach, M.; Hebdowska-Krupa, M.; Stefańska, A.; Mikuła, J.; Hebda, M. Characterisation of post-production raw material from the Raciszyn II deposit as a material suitable for the production of alkaline-activated materials. J. Therm. Anal. Calorim. 2019, 138, 4551–4559.
  18. Korniejenko, K.; Łach, M.; Chou, S.-Y.; Gadek, S.; Mikuła, J. Mechanical properties of short fiber-reinforced geopolymers made by casted and 3D printing methods: A comparative study. Materials 2020, 13, 579.
  19. Kastiukas, G.; Zhou, X.; Castro-Gomes, J. Development and optimisation of phase change material-impregnated lightweight aggregates for geopolymer composites made from aluminosilicate rich mud and milled glass powder. Constr. Build. Mater. 2016, 110, 201–210.
  20. Parameshwaran, R.; Harikrishnan, S.; Kalaiselvam, S. Energy efficient PCM-based variable air volume air conditioning system for modern buildings. Energy Build. 2010, 42, 1353–1360.
  21. Lone, M.I.; Jilte, R. A review on phase change materials for different applications. Mater. Today Proc. 2021, 46, 10980–10986.
  22. Dhaidan, N.S.; Khodadadi, J.M. Melting and convection of phase change materials in different shape containers: A review. Renew. Sustain. Energy Rev. 2015, 43, 449–477.
  23. Ma, T.; Yang, H.; Zang, Y.; Lu, L.; Wang, X. Using chase change materials in photovoltaic systems for thermal regulation and electrical efficiency improvement: A review and outlook. Renew. Sustain. Energy Rev. 2015, 43, 1273–1284.
  24. Zhou, Z.; Zang, Z.; Zuo, J.; Huang, K.; Zhang, L. Phase change materials for solar thermal energy storage in residential buildings in cold climate. Renew. Sustain. Energy Rev. 2015, 48, 692–703.
  25. Seddegh, S.; Wang, X.; Henderson, A.D.; Xing, Z. Solar domestic hot water systems using latent heat energy storage medium: A review. Renew. Sustain. Energy Rev. 2015, 49, 517–533.
  26. D’Alessandro, A.; Pisello, A.L.; Fabiani, C.; Ubertini, F.; Cabeza, L.F.; Cotana, F. Multi- functional smart concretes with novel phase change materials: Mechanical and thermo-energy investigation. Appl. Energy 2018, 212, 1448–1461.
  27. Ling, T.C.; Poon, C.S. Use of phase change materials for thermal energy storage in concrete: An overview. Constr. Build. Mater. 2013, 46, 55–62.
  28. Rao, V.V.; Parameshwaran, R.; Ram, V.V. PCM-mortar based construction materials for energy efficient buildings: A review on research trends. Energy Build. 2018, 158, 95–122.
  29. Cao, V.D.; Pilehvar, S.; Salas-Bringas, C.; Szczotok, A.M.; Bui, T.Q.; Carmona, M.; Rodriguez, J.F.; Kjøniksen, A.L. Thermal analysis of geopolymer concrete walls containing microencapsulated phase change materials for building applications. Sol. Energy 2019, 178, 295–307.
  30. Ramakrishnan, S.; Pasupathy, K.; Sanjayan, J. Synthesis and properties of thermally enhanced aerated geopolymer concrete using form-stable phase change composite. J. Build. Eng. 2021, 40, 102756.
  31. Sukontasukkul, P.; Nontiyutsirikul, N.; Songpiriyakij, S.; Sakai, S.; Chindaprasirt, P. Use of phase change material to improve thermal properties of lightweight geopolymer panel. Mater. Struct. 2016, 49, 4637–4645.
  32. Gasca-Tirado, J.R.; Manzano-Ramírez, A.; Velázquez-Castillo, R.R.; Gómez-Luna, B.E.; Nava-Mendoza, R.F.; López-Romero, J.M.; Apátiga-Castro, L.M.; Rivera-Muñoz, E.M. Porous geopolymer as a possible template for a phase change material. Mater. Chem. Phys. 2019, 236, 121785.
  33. Mehling, H.; Cabeza, L.F. Heat and Cold Storage with PCM. An up to Date Introduction into Basics and Applications; Springer: Berlin/Heidelberg, Germany, 2008.
  34. Zalba, B.; Martyn, J.M.; Cabeza, L.F.; Mehling, H. Review on thermal energy storage with phase change: Materials, heat transfer analysis and applications. Appl. Therm. Eng. 2003, 23, 251–283.
  35. Zhang, Y.; Zhou, G.; Lin, K.; Zhang, Q.; Di, H. Application of latent heat thermal energy storage in buildings: State-of-the-art and outlook. Build. Environ. 2007, 42, 2197–2209.
  36. Pasupathy, A.; Velraj, R. Effect of double layer phase change material in building roof for year round thermal management. Energy Build. 2008, 40, 193–203.
  37. Tyagi, V.V.; Buddhi, D. PCM thermal storage in buildings: A state of art. Renew. Sustain. Energy Rev. 2007, 11, 1146–1166.
  38. Jaworski, M. Materiały zmiennofazowe (PCM) do zastosowań w budownictwie. Pol. Energetyka Słoneczna 2008, 1–4, 57–60.
  39. Navarro Farré, L.; Solé, A.; Martín, M.; Barreneche Güerisoli, C.; Olivieri, L.; Tenorio, J.A.; Cabeza, J.F. Benchmarking of useful phase change materials for a building application. Energy Build. 2018, 182, 45–50.
  40. Sharma, A.; Tyagi, V.V.; Chen, C.R.; Buddhi, D. Review on thermal energy storage with phase changematerials and applications. Renew. Sustain. Energy Rev. 2009, 13, 318–345.
  41. Cabeza, L.F.; Castell, A.; Barreneche, C.; De Gracia, A.; Fernández, A.I. Materials used as PCM in thermal energy storage in buildings: A review. Renew. Sustain. Energy 2011, 15, 1675–1695.
  42. Sodha, M.S.; Sawhney, R.L.; Buddhi, D. Use of evaporatively cooled underground water storage for convective cooling of buildings: An analytical study. Energy Convers. Manag. 1994, 35, 683–688.
  43. Abhat, A. Low temperature latent heat thermal energy storage: Heat storage materials. Sol. Energy 1983, 30, 313–332.
  44. Magendran, S.S.; Khan, F.S.A.; Mubarak, N.M.; Vaka, M.; Walvekar, R.; Khalid, M.; Abdullah, M.C.; Nizamuddin, S.; Karri, R.R. Synthesis of organic phase change materials (PCM) for energy storage applications: A review. Nano Struct. Nano Objects 2019, 20, 100399.
  45. Melcer, A.; Klugmann-Radziemska, E.; Lewandowski, W. Phase change materials on the market-properties and applications. Przemysł Chemiczny 2012, 9, 1733–1742.
  46. PX & GR BOUND PCM. Available online: (accessed on 29 August 2021).
  47. Reeb, C.; Pierlot, C.; Davy, C.; Lambertin, D. Incorporation of organic liquids into geopolymer materials- A review of processing, properties and applications. Ceram. Int. 2020, 47, 7369–7385.
  48. Pilehvar, S.; Cao, V.D.; Szczotok, A.M.; Carmona, M.; Valentini, L.; Lanzón, M.; Pamies, R.; Kjøniksen, A. Physical and mechanical properties of fly ash and slag geopolymer concrete containing different types of micro-encapsulated phase change materials. Constr. Build. Mater. 2018, 173, 28–39.
  49. Wang, Z.; Su, H.; Zhao, S.; Zhao, N. Influence of phase change material on mechanical and thermal properties of clay geopolymer mortar. Constr. Build. Mater. 2016, 120, 329–334.
  50. Cao, V.D.; Pilehvar, S.; Salas-Bringas, C.; Szczotok, A.M.; Valentini, L.; Carmona, M.; Rodriguez, J.F.; Kjøniksen, A. L Influence of microcapsule size and shell polarity on thermal and mechanical properties of thermoregulating geopolymer concrete for passive buildingapplications. Energy Convers. Manag. 2018, 164, 198–209.
  51. Hassan, A.; Rashid, Y.; Mourad, A.I.; Ismail, N.; Laghari, M.S. Thermal and Structural Characterization of Geopolymer-Coated Polyurethane Foam—Phase Change Material Capsules/Geopolymer Concrete Composites. Materials 2019, 12, 796.
  52. Shadnia, R.; Zhang, L.; Li, P. Experimental study of geopolymer mortar with incorporated PCM. Constr. Build. Mater. 2015, 84, 95–102.
  53. Afolabi, L.O.; Ariff, Z.M.; Megat-Yusoff, P.S.M.; Al-Kayiem, H.H.; Arogundade, A.I.; Afolabi-Owolabi, O.T. Red-mud geopolymer composite encapsulated phase change material for thermal comfort in built-sector. Sol. Energy 2019, 181, 464–474.
  54. Jacob, R.; Raud, R.; Trout, N.; Bell, S.; Clarke, S.; Will, H.; Saman, W.; Bruno, F. Effect of inner coatings on the stability of chloride-based phase change materials encapsulated in geopolymer. Sol. Energy Mater. Sol. Cells. 2018, 174, 271–276.
  55. Micronal DS 5038 X. Available online: (accessed on 29 August 2021).
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