Research

Bio-based plaster for improved indoor air quality


Reference:

Maskell, D., Ferreira Pinto Da Silva, C., Mower, K., Cheta, R., Dengel, A., Ball, R., Ansell, M., Thomson, A., Peter, U. and Walker, P., 2017. Bio-based plaster for improved indoor air quality. In: International Conference on Bio-Based Building Materials 2017, 2017-06-21 - 2017-06-23, France.

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    Abstract

    People in industrialised countries spend approximately 80% of their time indoors. As such, the internal environment quality can have a significant impact on occupant health and wellbeing. Additionally, the demand for increased building energy efficiency has the potential to degrade Indoor Air Quality (IAQ) through a reduction of air exchange rates. In many forms of construction, the walls and ceilings are plastered, providing a large surface area exposed to the indoor environment. There is a growing recognition of the important role this surface may have on IAQ through regulation of relative humidity. Another, less well known, impact is that porous coatings have the potential to adsorb Volatile Organic Compounds (VOCs) from the air, which offers further potential to improve IAQ. This paper presents work from the development of a novel bio-based plaster with improved hygrothermal performance and VOC sorption characteristics. Cellulose flakes, used for blown insulation, were added into a cement-lime substrate in three different proportions. A range of mechanical, hygrothermal, VOC emission and VOC adsorption properties were investigated to evaluate the potential of the bio-based cement-lime plaster to improve IAQ. The bio-based cement-lime plaster resulted in an improved thermal conductivity and an improvement in the material’s moisture buffering capacity and VOC adsorption capacity. With 5% addition of cellulose flakes, the hygrothermal performance increased by over 25%. This material also showed the ability to capture VOCs and formaldehyde from the air, reducing the concentrations of these compounds by up to 22% and 70 % respectively. Therefore, the impact of the implementation of this plaster includes potential benefits regarding better operational performance of the building and improved occupant health and wellbeing.

    Details

    Item Type Conference or Workshop Items (Paper)
    CreatorsMaskell, D., Ferreira Pinto Da Silva, C., Mower, K., Cheta, R., Dengel, A., Ball, R., Ansell, M., Thomson, A., Peter, U. and Walker, P.
    Uncontrolled Keywordsmoisture buffering,volatile organic compounds,health and wellbeing
    DepartmentsFaculty of Engineering & Design > Architecture & Civil Engineering
    Research Centres & Institutes > Institute for Sustainable Energy and the Environment
    Research Centres & Institutes > Institute for Policy Research
    Research CentresBRE Centre in Innovative Construction Materials
    Centre for Sustainable Chemical Technologies
    Building Research Park
    Centre for Doctoral Training in Decarbonisation of the Built Envinronment (dCarb)
    Centre for Nanoscience and Nanotechnology
    RefereedYes
    StatusPublished
    ID Code55050

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