20.500.12556/RUL-32113 Possibilities of using the ultrasonic wave transmission method to estimate initial setting time of cement paste In this paper, the applicability of the ultrasonic wave transmission method to estimate the initial setting time of an arbitrary cement paste is discussed. Ultrasonic pulse velocity measurements were fully automated and measured continuously. The Vicar Needle Test was used in order to determine the initial setting time of cement pastes. Different cement pastes were prepared in order to check the influence of the water/cement ratio, type of cement, curing temperature, cement fineness, and some clinker compositions, on the relationship between the initial setting time and ultrasonic pulse velocity. It was found that the initial setting time of an arbitrary cement paste can be estimated very accurately by the time the first inflection point appears on the ultrasonic pulse velocity curve. Moreover, it can be estimated quite accurately by the time the ultrasonic pulse velocity reaches a fixed value, close to the value of the ultrasonic pulse velocity in water. hidration cement paste ultrasonic wave transmition initial setting time hidratacija cementna pasta prehod ultrazvočnih valov začetni čas vezanja true false false Elsevier Angleški jezik Angleški jezik Neznano 2015-07-10 10:12:04 2015-07-10 10:12:04 2022-11-21 15:00:22 0000-00-00 00:00:00 2008 0 0 Str. 1336-1342 št 11 Letn. 38 2008 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 691.5 0008-8846 10.1016/j.cemconres.2008.08.003 4294497 5819399 CCR2008_Trtnik_n.pdf CCR2008_Trtnik_n.pdf 1 BA1BCA16B3BFE9E3EC5A3B402C13139F 151fe41eb531f133bd757a021f3aef6ad52a82516710721c0e58eb63586d093f 0f39c460-a1ae-11eb-a523-00155dcfd717 20.500.12556/rul/f86d0424-726b-4123-8528-0d67857f7b1c https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=85624 Fakulteta za gradbeništvo in geodezijo 0 0 0