A peculiar forming is a feature in gaudi's building and these are construction that represents the modelnismo construction.It is called modelnismo in spain so in the same meaning as the art nouveau to which the influence of the ukiyoe of japan has been received.Then,it was assumed the gaudi construction made the representative of the modelnismo construction including a japanese element.Three points of the point that thought to nature in the difference point with other modelnismo construction of the gaudi construction,the plants,and the detail and japan that had assumed the natural one to be a motif additionally is felt were mainly surveyed.

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Although the building materials with antimicrobial or stain-proof performance have been in use recently,the practical evaluation method of those has not been established yet.Therefore,the authors have been trying to evaluta them by use of electrical surface resistance.This paper describes the results of the outdoor test for about four years to examine the performance of exterior tile with photocatalyst.As the results of that,it was clarified that the tiles with photocatalyst were harder to be attached by stain than usyal tiles,andbthe stain performance could be evzluated by use of surface resistance.

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It is imporant that dirt ir removed from an outer wall of a building from the viewpoint of improvement of the durability as well as appearance of a building.The studies about progress condition of dirt after having washed an outer wall are not almost done.Exposed 72 kinds of exterior materials outdoor for 36 months are washed,and then are exposed again.he dirt on material exposed after washing are classified into five types.

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On the viewpoint of finishing appearanceof the coating,polyurethanebased sealant materials are widely used on housing and constrution fields.However,failures from mismatching between sealants and coatings have been increased while the finishing specifications are deversified from environmental cirrespondence or requests for long-term weatherability.We had been improving rhe formylations of sealants and finally developed a high-performance polyurethane sealant which is suitable for many kinds of finishing paints,and it was confirmed that the formulation showed excellent suitability to more than 200 test conditions.In this presentation,we report analytical results of the syitability based on 6 years oytdoor exposure evaluation.The number og failures by using conventional polyurethane based sealant is shown to be increased moer than 80% by the 6 years evaluation.And this figure involved the combination of sealants and paints already passed the short-term evalyation.

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As measure to indoor environmental pollution,water based paint has been used as interior paint which has highlighted a new problem in water basedpaint.Coats of paint to metal or wooden doors and banisters which are subject to frequent contact with hands etc.have always been subject to stain and abrasion.These effects have not been a major problem under solvent based paints but under water based paints it is easier to stain and ultimately the paint film softens and may even peel off.By analyzing the paint films obtained on site,we reveal that softening of paint films is caused by sebum from hands.Also we present the results of our research into film softening assessment methods using substances similar to humen sebum.

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[in Japanese]

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