Effect of temperature on mortars with incorporation of phase change materials

Cunha, Sandra; Aguiar, José; Pacheco-Torgal, F.

doi:10.1016/j.conbuildmat.2015.08.077

Cited by 75 publications

(67 citation statements)

References 23 publications

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“…Buildings are one of the leading sectors in energy consumption in developed countries. In the European Union the buildings represent 40% of energy consumption and CO 2 emissions to the atmosphere [3][4].…”

Section: Introductionmentioning

confidence: 99%

Influence of adding phase change materials on the physical and mechanical properties of cement mortars

Cunha

Lima

Aguiar

2016

Construction and Building Materials

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108

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h i g h l i g h t sFour compositions were developed with incorporation of non-encapsulated PCM. The influence of the non-encapsulated PCM in mortars was evaluated. The incorporation of PCM did not affect the density and the mechanical strengths. The incorporation of PCM leads to a decrease in the water absorption. The ambient temperature did not affect the compressive strength. a b s t r a c tDuring the last years several studies of construction materials with incorporation of encapsulated phase change material (PCM) have been published. However, the utilization of non-encapsulated PCM is one of the main gaps. The main objective of this work was the study of physical and mechanical properties of cement mortars with incorporation of non-encapsulated PCM. It was possible to conclude that the utilization of non-encapsulated phase change materials can be seen as a good and more economical solution for the energy efficiency of the buildings, without prejudice of the properties.

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Section: Introductionmentioning

confidence: 99%

Influence of adding phase change materials on the physical and mechanical properties of cement mortars

Cunha

Lima

Aguiar

2016

Construction and Building Materials

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108

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“…The selection of the mortars takes into account some previous work (10,11,(19)(20)(21). Mortars were based on the following binders: aerial lime, hydraulic lime, gypsum and cement.…”

Section: Methodsmentioning

confidence: 99%

“…These should be supported and easily amortized by the user. It may also be noted that the economic benefits of reduced energy consumption and lag times for lower demand are evident, and can be achieved with the use of PCM (4,10,11).…”

Section: Introductionmentioning

confidence: 99%

Ranking procedure based on mechanical, durability and thermal behavior of mortars with incorporation of phase change materials

Cunha¹,

Aguiar²,

Tadeu³

2015

Mater. construcc.

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Nowadays, considering the high variety of construction products, adequate material selection, based on their properties and function, becomes increasingly important. In this research, a ranking procedure developed by Czarnecki and Lukowski is applied in mortars with incorporation of phase change materials (PCM). The ranking procedure transforms experimental results of properties into one numerical value. The products can be classified according to their individual properties or even an optimized combination of different properties. The main purpose of this study was the ranking of mortars with incorporation of different contents of PCM based in different binders. Aerial lime, hydraulic lime, gypsum and cement were the binders studied. For each binder, three different mortars were developed. Reference mortars, mortars with incorporation of 40% of PCM and mortars with incorporation of 40% of PCM and 1% of fibers, were tested. Results show that the incorporation of PCM in mortars changes their global performance. RESUMEN: Procedimiento de clasificación de morteros con incorporación de materiales de cambio de fase basado en el comportamiento mecánico, durabilidad y comportamiento térmico.Actualmente, existen varios productos de construcción, siendo importante una adecuada selección, con base en sus principales propiedades y funciones. En esta investigación se aplicó un procedimiento de clasificación desarrollado por Czarnecki y Lukowski, en morteros con incorporación de materiales de cambio de fase (PCM). Este procedimiento transforma los resultados experimentales de las propiedades en un único valor numérico. Los productos se clasifican de acuerdo con sus propiedades individuales o en una combinación optimizada de diferentes propiedades. El principal objetivo de este estudio fue la clasificación de morteros basado en los diferentes aglutinantes con incorporación de diferentes cantidades de PCM. Los aglutinantes utilizados fueran la cal aérea, cal hidráulica, yeso y cemento. Para cada aglutinante se han desarrollado tres morteros, siendo morteros de referencia, con incorporación de 40% de PCM y con incorporación de 40% de PCM y 1% de fibras. Fue observado que la incorporación de PCM en morteros cambia su comportamiento global.

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“…A seleção dos materiais levou em consideração trabalhos anteriores [11,[13][14][15][16]. As argamassas desenvolvidas foram baseadas em diferentes materiais: cimento, cinzas volantes, PCM, areia, superplastificante e fibras.…”

Section: Materiaisunclassified

“…A incorporação de microcápsulas de PCM em betão e argamassas também foi alvo de investigação [9][10][11][12]. Existem também outros estudos com incorporação de PCM em materiais de construção, como por exemplo painéis de PVC, blocos e tijolos [13][14][15]. Mais recentemente, diferentes trabalhos foram publicados no que diz respeito à incorporação de microcápsulas de PCM em argamassas.…”

Section: Introductionunclassified

Argamassas eco-eficientes com incorporação simultânea de material de mudança de fase e cinzas volantes

et al. 2019

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RESUMOAtualmente, a indústria da construção é um dos principais setores europeus responsáveis pelos elevados níveis de consumo de energia, extração de matérias-primas e produção de resíduos. Cada vez mais o consumo de energia proveniente de fontes renováveis e a reutilização de resíduos industriais constituem a única maneira de minimizar este problema para o meio ambiente e sociedade. A incorporação simultânea de materiais de mudança de fase (PCM) e cinzas volantes (FA) em argamassas permite aumentar a eficiência energética nos edifícios e diminuir a quantidade de extração de matérias-primas e de resíduos depositados em aterro. O desenvolvimento de argamassas com incorporação de PCM e cinzas volantes contribui para uma melhoria significativa dos parâmetros de conforto no interior de edifícios e do meio ambiente. O PCM permite regular a temperatura no interior dos edifícios utilizando como recurso apenas energia solar, diminuindo as necessidades de utilização de equipamentos de climatização. O PCM possui a capacidade de absorver e liberar energia para o meio ambiente. O principal objetivo deste trabalho consistiu na caracterização física, mecânica e térmica de argamassas com incorporação de PCM e FA. Foi possível concluir que a incorporação simultânea de PCM e FA permitiu obter argamassas homogêneas e adequadas, com boas propriedades físicas e mecânicas e um comportamento térmico melhorado quando comparadas às argamassas sem incorporação e apenas com incorporação de PCM.Palavras-chave: Material de Mudança de Fase, Cinzas Volantes, Argamassas, Cimento. ABSTRACTNowadays, the construction industry is the one of the main European sector responsible for the higher levels of energy consumption, raw materials extraction and waste production. Increasingly the consumption of energy from renewable sources and reusing industrial wastes is the only way to minimize this problem for the environment and society. The simultaneous incorporation of phase change materials (PCM) and fly ash (FA) in mortars allow increase the energy efficiency in buildings and decrease the amount of the raw materials extraction and waste materials landfilled. The development of mortars with incorporation of PCM and fly ash contributes to a significant improvement of the comfort parameters inside buildings and in the environment. The PCM allow regulating the temperature inside buildings using only solar energy as a resource, decreasing the air conditioning needs. The PCM has the capability to absorb and release energy for the environment. The main purpose of this study was the physical, mechanical and thermal characterization of mortars with incorporation of PCM and FA. It was concluded that the simultaneous incorporation of PCM and FA leads to homogenous and suitable mortars, with good physical and mechanical properties and an increased thermal behavior when compared to the mortars without incorporation of PCM and only with incorporation of PCM. TADEU, A.. revista Matéria, v.24, n.2, 2019.

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Effect of temperature on mortars with incorporation of phase change materials

Cited by 75 publications

References 23 publications

Influence of adding phase change materials on the physical and mechanical properties of cement mortars

Influence of adding phase change materials on the physical and mechanical properties of cement mortars

Ranking procedure based on mechanical, durability and thermal behavior of mortars with incorporation of phase change materials

Argamassas eco-eficientes com incorporação simultânea de material de mudança de fase e cinzas volantes

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