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原文传递 Rubber Joint Seals for Roads and Airfields. Evaluation of Performance and Durability

题名：	Rubber Joint Seals for Roads and Airfields. Evaluation of Performance and Durability
作者：	Jakubowicz, I.; Lindgren, A. S.
关键词：	Joint sealers; Pavements; Performance evaluation; Durability; Roads; Elastomers; Runways; Expansion joints; Concrete pavements
摘要：	Joint seals for use is construction joints in roads and airfields were examined in respect to their performance, within a wide range of temperature. Attention was paid to very slow movements in joints and to compression set of materials. Three EPDM seals were used. The seals were subjected to changing temperature and synchronized movement of the joint. The expansion force (compression force) of the seals, which is responsible for keeping the seal in place and for preventing penetration of water and dust, was recorded continuously. A seal was judged as not functioning well when the expansion force was reduced to zero. A comparison between various seals was difficult to make as the manufacturers have specified various working ranges. Apart from that, only one EPDM seal functioned well at -30 deg C. The other two EPDM seals hardly managed to function at -20 deg C.
总页数：	32p
报告类型：	科技报告