NEW TEST SPECIMEN AND METHOD FOR EVALUATION OF WEATHERABILITY OF SEALANTS

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  • 建築用シーリング材の耐候性評価のための新しい試験体および試験方法
  • ケンチクヨウ シーリングザイ ノ タイコウセイ ヒョウカ ノ タメ ノ アタラシイ シケンタイ オヨビ シケン ホウホウ

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Although construction sealants are used for dynamic joints with thermal or seismically induced movement the general test methods employed in the evaluation of the weatherability of construction joint are based on weathering test without movement. In this study, we evaluate the weatherability of sealants with a new test method using newly developed test specimens, which enable exposing the cured sealants to compression and extension at the same time in a single test specimen. In this evaluation, we confirm that the surface degradation of sealants is accelerated by the additional movement cycles.

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