A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Length change characteristics of autoclaved aerated concrete and other porous media based on pore structure
Autoclaved aerated concrete (AAC) is an important building material and is a typical porous material. In this study, the moisture sorption and length change isotherms of AAC, Vycor glass, and a diatomaceous shale material were measured. Local minimum values of length change were observed at relative humidities (RH) from 60 to 90% during the desorption process in all cases. Significant hysteresis between desorption and adsorption occurred in this RH range. However, the length of each material changed with small moisture loss or gain and no hysteresis was observed at RH from 10 to 50%. The anomalous length change behavior above 60% RH was explained by capillary tension in inkbottle‐shaped pores, whereas the surface energy model was applied to the length change at low RH. The length change characteristics of the materials with different pore structures in our study can be explained by the pore size distribution.
Length change characteristics of autoclaved aerated concrete and other porous media based on pore structure
Autoclaved aerated concrete (AAC) is an important building material and is a typical porous material. In this study, the moisture sorption and length change isotherms of AAC, Vycor glass, and a diatomaceous shale material were measured. Local minimum values of length change were observed at relative humidities (RH) from 60 to 90% during the desorption process in all cases. Significant hysteresis between desorption and adsorption occurred in this RH range. However, the length of each material changed with small moisture loss or gain and no hysteresis was observed at RH from 10 to 50%. The anomalous length change behavior above 60% RH was explained by capillary tension in inkbottle‐shaped pores, whereas the surface energy model was applied to the length change at low RH. The length change characteristics of the materials with different pore structures in our study can be explained by the pore size distribution.
Length change characteristics of autoclaved aerated concrete and other porous media based on pore structure
Matsui, Kunio (author) / Asamoto, Shingo (author) / Ogawa, Akihiro (author)
ce/papers ; 2 ; 147-153
2018-09-01
7 pages
Article (Journal)
Electronic Resource
English
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