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Development of Innovative Aerogel Based Plasters: Preliminary Thermal and Acoustic Performance Evaluation

Author

Listed:
  • Cinzia Buratti

    (Department of Industrial Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia (PG), Italy)

  • Elisa Moretti

    (Department of Industrial Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia (PG), Italy)

  • Elisa Belloni

    (Department of Industrial Engineering, University of Perugia, Via G. Duranti 93, 06125 Perugia (PG), Italy)

  • Fabrizio Agosti

    (Agosti Nanotherm s.r.l., Via San Giacomo 23, 39055 Laives (BZ), Italy)

Abstract

The thermal and acoustic properties of innovative insulating systems used as building coatings were investigated: Granular silica aerogel was mixed with natural plaster in different percentages. This coating solution is transpiring and insulating, thanks to the use of a natural lime coat and aerogel, a highly porous light material with very low thermal conductivity. The thermal conductivity of the proposed solution was evaluated by means of a Heat Flow meter apparatus (EN ISO 12667), considering different percentages of aerogel. The natural plaster without aerogel has a thermal conductivity of about 0.50 W/m K; considering a percentage of granular aerogel of about 90% in volume, the thermal conductivity of the insulating natural coating falls to 0.050 W/m K. Increasing the percentage of granular aerogel, a value of about 0.018–0.020 W/m K can be reached. The acoustic properties were also evaluated in terms of the acoustic absorption coefficient, measured by means of a Kundt’s Tube (ISO 10534-2). Two samples composed by a plasterboard support, an insulation plaster with aerogel (thicknesses 10 mm and 30 mm respectively) and a final coat were assembled. The results showed that the absorption coefficient strongly depends on the final coat, so the aerogel-based plaster layer moderately influences the final value. The application of this innovative solution can be a useful tool for new buildings, but also for the refurbishment of existing ones. This material is in development: until now, the best value of the thermal conductivity obtained from manufacturers is about 0.015 W/m K.

Suggested Citation

  • Cinzia Buratti & Elisa Moretti & Elisa Belloni & Fabrizio Agosti, 2014. "Development of Innovative Aerogel Based Plasters: Preliminary Thermal and Acoustic Performance Evaluation," Sustainability, MDPI, vol. 6(9), pages 1-14, September.
    • Handle: RePEc:gam:jsusta:v:6:y:2014:i:9:p:5839-5852:d:39811
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    References listed on IDEAS

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    1. Gao, Tao & Jelle, Bjørn Petter & Ihara, Takeshi & Gustavsen, Arild, 2014. "Insulating glazing units with silica aerogel granules: The impact of particle size," Applied Energy, Elsevier, vol. 128(C), pages 27-34.
    2. Buratti, C. & Moretti, E., 2012. "Experimental performance evaluation of aerogel glazing systems," Applied Energy, Elsevier, vol. 97(C), pages 430-437.
    3. Cuce, Erdem & Cuce, Pinar Mert & Wood, Christopher J. & Riffat, Saffa B., 2014. "Toward aerogel based thermal superinsulation in buildings: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 34(C), pages 273-299.
    4. Buratti, C. & Moretti, E., 2012. "Glazing systems with silica aerogel for energy savings in buildings," Applied Energy, Elsevier, vol. 98(C), pages 396-403.
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    Cited by:

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    2. Davide Del Curto & Valentina Cinieri, 2020. "Aerogel-Based Plasters and Energy Efficiency of Historic Buildings. Literature Review and Guidelines for Manufacturing Specimens Destined for Thermal Tests," Sustainability, MDPI, vol. 12(22), pages 1-23, November.
    3. Martina Záleská & Milena Pavlíková & Martin Vyšvařil & Zbyšek Pavlík, 2021. "Effect of Aggregate and Binder Type on the Functional and Durability Parameters of Lightweight Repair Mortars," Sustainability, MDPI, vol. 13(21), pages 1-17, October.
    4. Jozef Švajlenka & Mária Kozlovská, 2018. "Perception of User Criteria in the Context of Sustainability of Modern Methods of Construction Based on Wood," Sustainability, MDPI, vol. 10(2), pages 1-17, January.
    5. Pacheco-Torgal, F., 2017. "High tech startup creation for energy efficient built environment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 618-629.
    6. Moretti, Elisa & Belloni, Elisa & Agosti, Fabrizio, 2016. "Innovative mineral fiber insulation panels for buildings: Thermal and acoustic characterization," Applied Energy, Elsevier, vol. 169(C), pages 421-432.
    7. Yang, Jiangming & Wu, Huijun & Xu, Xinhua & Huang, Gongsheng & Xu, Tao & Guo, Sitong & Liang, Yuying, 2019. "Numerical and experimental study on the thermal performance of aerogel insulating panels for building energy efficiency," Renewable Energy, Elsevier, vol. 138(C), pages 445-457.
    8. Huang, Yu & Niu, Jian-lei, 2015. "Application of super-insulating translucent silica aerogel glazing system on commercial building envelope of humid subtropical climates – Impact on space cooling load," Energy, Elsevier, vol. 83(C), pages 316-325.

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