Abstract
In recent years, the effects of the moisture control performance of the desiccant interior plasters are attracting attention. The effects are usually evaluated in a small environmental chamber, but on the other hand the establishment of the simulation method in the real indoor environment is also expected. In this study we evaluated the moisture control performance of the desiccant interior plaster using a real-scaled large chamber to clarify the relationship between the small environmental chamber and the real indoor environment. The experiments were performed using the diatomaceous earth plaster as a desiccant interior plaster. It was confirmed that the diatomaceous earth plaster has the effect to lower the change of the relative humidity. The correlation of the effect of a small environmental chamber and the effect of a real-scaled large chamber was confirmed.