Preparation and characterization of aerogel/expanded perlite composite as building thermal insulation material

Jia, Guanhua; Zhu, Li; Liu, Peng; Jing, Qiangshan

doi:10.1016/j.jnoncrysol.2017.12.047

Cited by 69 publications

(27 citation statements)

References 41 publications

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“…Its only problem is its large specific surface area, which generates major water absorption [24]. The EP stands out, not just on being one of the lightest aggregates when compared to expanded clay, expanded glass, and exfoliated vermiculite [25], but also due to its porous microstructure which provides excellent thermal properties when added to mortars and concretes [4,10,23,24,26,27,28]. What is more, it is non-toxic, fire resistant, has good acoustic insulation properties, has a competitive price, and does not react or leach into ground water [4,22,27,29,30,31,32].…”

Section: Introductionmentioning

confidence: 99%

“…The study of Wang et al, 2018, defined an optimal gradation of EP particles filled with aerogel in structural LC based on the numerical tube pressure (KPa) of the mixtures as an indicator [34], but not in the thermal conductivity. Several studies express that EP (without aerogel) has high hydrophilic properties [26,30,35], as such it tends to considerably increase the water absorption of construction materials like concrete or mortar when added to them [22,34,36]. There are studies which take advantage of the hydrophilic properties of EP to increase the humidity contents in the concrete.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it must be considered that higher moisture content might imply higher heat transfer coefficients [37], as can be seen in the study made by Real et al, 2016 [2]. In fact, some studies have tried to limit the water absorption by the perlite by covering it with hexafluorobutyl acrylate (HFBA) [35] or filling it with aerogel [26,34], to also improve its thermal properties.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Granulometry on Thermal and Mechanical Properties of Cement Mortars Containing Expanded Perlite as a Lightweight Aggregate

et al. 2019

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This research aims at clarifying the influence of the granulometry of expanded perlite, on the thermal conductivity, structural strength, density, and water absorption of lightweight mortars. Three original perlite gradations have been obtained and three pairs of twin test mortars have been tested with those gradations. SEM tests have also been run to clarify the interaction, at a microscopic level, between the expanded perlite and the cement grouting. The results indicate that the mere manipulation of the granulometry may have a considerable and very beneficial effect on the mixture’s properties, such as thermal conductivity and water absorption.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Granulometry on Thermal and Mechanical Properties of Cement Mortars Containing Expanded Perlite as a Lightweight Aggregate

et al. 2019

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“…expanded polystryrene (EPS), extruded polystyrene (XPS) and fibre products) to the building envelope is a common and mature practice to increase thermal resistance [1]. Novel insulation technologies such as Vacuum Insulation Panels [3] and aerogel [16] can provide the required thermal resistance using layers that are much thinner than conventional insulation materials and hence reducing the thickness of the building structure. Amongst the various components that form building envelopes, window systems, which can be responsible for as much as 60% of the total energy consumption of a building [17], are exceptionally important elements.…”

Section: Introductionmentioning

confidence: 99%

“…From 1970s to mid-2000s, a number of studies, which experimentally or/and theoretically investigated TIM's ability to suppress natural convection were undertaken and are summarized in this review . In the past decade, aerogel, which is a typical homogenous TIM structure, has attracted lots of attention and research interest in the field of building energy efficiency [3,16,[50][51][52][53][54][55][56]. However, numerical simulation techniques and sophisticated measurement techniques, which have witness fast growth during the past decade, have seen less application in the research of TIM.…”

Section: Introductionmentioning

confidence: 99%

A Review of Transparent Insulation Material (TIM) for building energy saving and daylight comfort

Sun

Wilson

2018

Applied Energy

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Improving the energy efficiency of building is key strategy in responding to climate change and resource challenges associated with the use of fossil fuel derived energy. The characteristics of the building envelope play a decisive role in determining building operation energy. Transparent Insulation Materials (TIMs) add to the strategies that may be used to sustain these improvements: they can reduce heat loss by providing high thermal resistance while effectively transmitting solar energy and contributing to the luminous environment. In this review, key types of TIMs and their characterisation in terms of both thermal and optical behaviours are introduced as well as the benefits that may be realised through their application to buildings. Relatively few studies exist regarding the performance of window systems incorporating TIMs. To provide a clear picture of how to accurately predict the performance of TIM integrated window systems, this paper also explores the literature around window systems incorporating complex interstitial structures, as these share many of the same characteristics as TIMs. The experimental and numerical methods used to evaluate the thermal and optical characteristics of complex window systems are summarised and this body of research provides potential methods for tackling similar questions posed in relation to the performance of window systems with TIMs. Finally, this review introduces a method that permits the prediction of the combined thermal and daylight behaviour of spaces served by TIM integrated window systems. The results of using this methodology show that using TIMs over a conventional window system offers a range of benefits to the occupants of buildings. Thus, this review offers a workflow that may be used to assess and analyse the benefit of applying TIMs for building energy saving and daylight comfort in buildings subjected to varying climate conditions.

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Advances in Nanoclay‐Based Form Stable Phase Change Materials: A Review

Zhao

Zuo

Yang

2023

Adv Materials Technologies

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As the core material of thermal energy storage technology, phase change materials (PCM) suffer serious leakage problems and slow thermal conductivity in applications. Nanoclay with relatively high specific surface area, high thermal conductivity, and abundant pore structure can successfully compensate for the defects in PCM. However, the ability of nanoclay without further modification to encapsulate the PCM for the preparation of form stable phase change materials (FSPCM) and accelerate their heat transfer is limited. Nanoclay is classified into 1D, 2D, and 3D minerals based on their microscopic morphology. In this review, the specific surface and pore structure of three types of nanoclay and their thermal performance after loading with PCM are summarized and compared. Then, different mineral modification treatments, such as pretreatment, surface modification, structural modulation, and functional assembly, are summarized to investigate the enhancement of thermal performance in nanoclay‐based FSPCM. This review also summarizes the state‐of‐the‐art research progress of emerging nanoclay material‐based FSPCM. Finally, a summary of the traditional applications of mineral‐based FSPCM and an outlook on new applications are presented. This paper will help researchers to better understand the recent developments, performance enhancement strategies of nanoclay‐based FSPCM and to identify potential future research efforts.

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Preparation and characterization of aerogel/expanded perlite composite as building thermal insulation material

Cited by 69 publications

References 41 publications

Influence of Granulometry on Thermal and Mechanical Properties of Cement Mortars Containing Expanded Perlite as a Lightweight Aggregate

Influence of Granulometry on Thermal and Mechanical Properties of Cement Mortars Containing Expanded Perlite as a Lightweight Aggregate

A Review of Transparent Insulation Material (TIM) for building energy saving and daylight comfort

Advances in Nanoclay‐Based Form Stable Phase Change Materials: A Review

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