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Establishing an environmentally controlled room to quantify water vapour resistivity properties of construction materials


Olaoye, TS and Dewsbury, M, Establishing an environmentally controlled room to quantify water vapour resistivity properties of construction materials, Proceedings of the 53rd International Conference of the Architectural Science Association, 28-30 November 2019, Roorkee, India, pp. 1-10. (2019) [Refereed Conference Paper]

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In Australia, the National Construction Code recently included the first performance requirements relating to condensation risk mitigation in Australian Buildings. Furthermore, itís expected that further enhancements to these regulations will occur in 2022, 2025 and 2028. Hence, hygrothermal performance assessment, which is the method by which water vapour pressure is simulated becomes an important part of the statutory process. To undertake a hygrothermal simulation relies upon building materials database, which includes water vapour resistivity, conductivity and water absorptivity properties. At this stage, whilst many materials used in Australian construction may have published values for conductivity and absorptivity, very few products have published values for water vapour resistivity. Additionally, manufacturers of building materials used in the external envelope of buildings will be seeking guidance about the water vapour resistivity properties of their products. This paper discusses the research which has been completed to establish Australiaís first laboratory to test the water vapour resistivity of building materials. The methods proposed include the use of a conditioned test room and an environmental chamber. This paper focuses on the establishment of an environmentally controlled test room for quantifying materialsí water vapour resistivity through gravimetric method. The establishment and operation of the environmental chamber will be reported later.

Item Details

Item Type:Refereed Conference Paper
Keywords:water vapour resistivity, gravimetric method, hygrothermal simulation, condensation, material properties
Research Division:Built Environment and Design
Research Group:Architecture
Research Field:Architectural science and technology
Objective Division:Construction
Objective Group:Building management and services
Objective Field:Residential building management and services
UTAS Author:Olaoye, TS (Mr Toba Olaoye)
UTAS Author:Dewsbury, M (Dr Mark Dewsbury)
ID Code:136390
Year Published:2019
Deposited By:Architecture and Design
Deposited On:2019-12-17
Last Modified:2022-09-05

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