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Measurement of setting process of cement pastes using non-destructive ultrasonic shear wave reflection technique
Trtnik, Gregor (Avtor), Valič, Marko (Avtor), Turk, Goran (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://drugg.fgg.uni-lj.si/4802/ Novo okno
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Izvleček
In this paper a new setup for measuring, setting and hardening process of cementitious materials, using a non-destructive ultrasonic shear wave reflection technique and design with the objective to be easily used in-situ, is described. Using the developed setup, the measurements can be performed by slight deepening of a measuring head into a paste in a mold or by placing the paste into a mold fixed on a measuring head. To test the proposed methodology, cement pastes with different compositions were prepared and exposed to different curing temperatures. Significant differences in the evolution of a change of a shear wave reflection coefficient Δr in time were observed, indicating the ability of the method to monitor setting process of cement pastes. Moreover, some interesting phenomena in the solidification process of the materials can be identified. A linear relationship between development of Δr and penetration resistance dP values in time was found, allowing development of a simplified procedure to determine both initial and final setting times of the material.

Jezik:Angleški jezik
Ključne besede:cement paste, ultrasonics, shear wave, setting, wave reflection method
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FGG - Fakulteta za gradbeništvo in geodezijo
Leto izida:2013
Založnik:Elsevier
Št. strani:str. 65-75
Številčenje:Letn. 56, Letn. 56
UDK:532:691
ISSN pri članku:0963-8695
DOI:10.1016/j.ndteint.2013.02.004 Povezava se odpre v novem oknu
COBISS.SI-ID:6202721 Povezava se odpre v novem oknu
Število ogledov:279
Število prenosov:113
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:NDT & E International
Skrajšan naslov:NDT E int.
Založnik:Butterworth-Heinemann
ISSN:0963-8695
COBISS.SI-ID:12515845 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:cementna pasta, ultrazvok, strižni valovi, vezanje cementa, metoda odboja valov

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