A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hygric properties of porous building materials (V): Comparison of different methods to determine moisture diffusivity
https://orcid.org/0000-0002-8315-3955
Abstract Moisture diffusivity is an important material property for performing the hygrothermal analysis of buildings and the built environment. Its experimental determination is still a challenge, albeit various destructive and non-destructive experimental methods are available. This paper compares the X-ray method, the ruler method, the multi-step method and the Kießl-Künzel method to non-destructively determine the moisture diffusivity of calcium silicate, ceramic brick and lime mortar. Results show that the ruler method can provide the closest results to the well-known X-ray attenuation method with a more straightforward process, but it's mainly suitable for materials with a sharp and visible water front. The multi-step method is easy to operate in experiments and suits most porous building materials, but it takes a long time to condition samples and needs complicated data processing, which seems too complex to get the moisture diffusivity as a step function. The Kießl-Künzel method is the simplest but not always accurate.
Highlights Different non-destructive methods to determine moisture diffusivity are compared. X-ray method is reliable but complicated in measurement and data processing. Ruler method is simple and accurate, but requires a clear and sharp moisture front. Multi-step method is complicated in data processing with controversial results. Kießl-Künzel method is the easiest but not always accurate.
Hygric properties of porous building materials (V): Comparison of different methods to determine moisture diffusivity
https://orcid.org/0000-0002-8315-3955
Abstract Moisture diffusivity is an important material property for performing the hygrothermal analysis of buildings and the built environment. Its experimental determination is still a challenge, albeit various destructive and non-destructive experimental methods are available. This paper compares the X-ray method, the ruler method, the multi-step method and the Kießl-Künzel method to non-destructively determine the moisture diffusivity of calcium silicate, ceramic brick and lime mortar. Results show that the ruler method can provide the closest results to the well-known X-ray attenuation method with a more straightforward process, but it's mainly suitable for materials with a sharp and visible water front. The multi-step method is easy to operate in experiments and suits most porous building materials, but it takes a long time to condition samples and needs complicated data processing, which seems too complex to get the moisture diffusivity as a step function. The Kießl-Künzel method is the simplest but not always accurate.
Highlights Different non-destructive methods to determine moisture diffusivity are compared. X-ray method is reliable but complicated in measurement and data processing. Ruler method is simple and accurate, but requires a clear and sharp moisture front. Multi-step method is complicated in data processing with controversial results. Kießl-Künzel method is the easiest but not always accurate.
Hygric properties of porous building materials (V): Comparison of different methods to determine moisture diffusivity
https://orcid.org/0000-0002-8315-3955
Abstract Moisture diffusivity is an important material property for performing the hygrothermal analysis of buildings and the built environment. Its experimental determination is still a challenge, albeit various destructive and non-destructive experimental methods are available. This paper compares the X-ray method, the ruler method, the multi-step method and the Kießl-Künzel method to non-destructively determine the moisture diffusivity of calcium silicate, ceramic brick and lime mortar. Results show that the ruler method can provide the closest results to the well-known X-ray attenuation method with a more straightforward process, but it's mainly suitable for materials with a sharp and visible water front. The multi-step method is easy to operate in experiments and suits most porous building materials, but it takes a long time to condition samples and needs complicated data processing, which seems too complex to get the moisture diffusivity as a step function. The Kießl-Künzel method is the simplest but not always accurate.
Highlights Different non-destructive methods to determine moisture diffusivity are compared. X-ray method is reliable but complicated in measurement and data processing. Ruler method is simple and accurate, but requires a clear and sharp moisture front. Multi-step method is complicated in data processing with controversial results. Kießl-Künzel method is the easiest but not always accurate.
Hygric properties of porous building materials (V): Comparison of different methods to determine moisture diffusivity
Ren, Peng (author) / Feng, Chi (author) / Janssen, Hans (author)
Building and Environment ; 164
2019-08-11
Article (Journal)
Electronic Resource
English
Interlaboratory Comparison of Hygric Properties of Porous Building Materials
| Online Contents | 2004
Hygric material properties of porous building materials
| Tema Archive | 2003
Hygric material properties of porous building materials
| British Library Conference Proceedings | 2003
RESEARCH PAPERS - Hygric Material Properties of Porous Building Materials
| Online Contents | 2003
Hygric properties of several building materials
| British Library Conference Proceedings | 2004