Mechanical and thermo-physical behaviour of concretes and mortars containing phase change material

Summary For passive building applications, phase change materials (PCMs) are microencapsulated to avoid leakage of PCM from concrete structure. The primary challenge of using microencapsulated PCM (MPCM) is its weak shell structure. New MPCMs with different shell compositions to prevent breakage during mixing in fresh concrete are needed. In this study, free radical polymerization method to microencapsulate capric acid–myristic acid mixture as PCM with two different methyl methacrylate co‐polymers is proposed to produce robust MPCMs for building applications. Two new microcapsules (MPCM‐1 and MPCM‐2) having latent heats of 91.9 and 97.3 J/g were synthesized. SEM analyses showed the size of microcapsules being in the range of 400–850 nm for MPCM‐1 and 250–475 nm for MPCM‐2. Analyses also reveal that the shells of MPCMs were not harmed, as they were added into concrete mixes. The microsphere's geometry was preserved, and distribution was homogeneous. The MPCMs were also studied under thermal tests of 1000 heating/cooling cycles. No significant changes in thermal properties were observed after thermal cycling tests. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Several challenges to overcome to simplify using microencapsulated PCMs (MPCM) within building applications are: [31].…”

Section: Introductionmentioning

confidence: 99%

Robust microencapsulated phase change materials in concrete mixes for sustainable buildings

Beyhan

Cellat

Konuklu

et al. 2016

Int. J. Energy Res.

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“…One of the limitations in the use of PCM in cementitious-based products is the decrease of mechanical properties [5,28,30]. However, as single layer mortars are not designed to support high mechanical efforts they can admit a significant amount of PCM load maintaining compressive strength within an acceptable range.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Single layer mortars with microencapsulated PCM: Study of physical and thermal properties, and fire behaviour

Ibarra

Serrano

Bosch

et al. 2016

Energy and Buildings

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Phase change materials are a promising strategy to reduce energy consumption in a wide range of applications including the building sector. Many studies have been done to evaluate the impact of PCM on thermal properties of building materials, however there exists little information on the influence of PCM on other properties of the support materials. This knowledge is necessary to determine the feasibility to apply and use building materials containing PCM. In this paper, the effect of the addition of different percentages of microencapsulated phase change material on the properties of two commercial single layer mortars has been studied. Physical and thermal properties as well as fire reaction have been evaluated.

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“…In the microencapsulation studies, the same energy storage capacity as the pure core plasticizer was used in filler mixes to reduce the amount of water in the mix [59].…”

mentioning

confidence: 99%

Review on using microencapsulated phase change materials (PCM) in building applications

Konuklu

Ostrý

Paksoy

et al. 2015

Energy and Buildings

330

139

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Mechanical and thermo-physical behaviour of concretes and mortars containing phase change material

Cited by 166 publications

References 32 publications

Robust microencapsulated phase change materials in concrete mixes for sustainable buildings

Robust microencapsulated phase change materials in concrete mixes for sustainable buildings

Single layer mortars with microencapsulated PCM: Study of physical and thermal properties, and fire behaviour

Review on using microencapsulated phase change materials (PCM) in building applications

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