Gregor Trtnik (Avtor), Marko Valič (Avtor), Goran Turk (Avtor)

Povzetek

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.

Ključne besede

cementna pasta;ultrazvok;strižni valovi;vezanje cementa;metoda odboja valov;cement paste;ultrasonics;shear wave;setting;wave reflection method;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: Elsevier
UDK: 532:691
COBISS: 6202721 Povezava se bo odprla v novem oknu
ISSN: 0963-8695
Št. ogledov: 2461
Št. prenosov: 975
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarne ključne besede: cementna pasta;ultrazvok;strižni valovi;vezanje cementa;metoda odboja valov;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 65-75
Letnik: ǂLetn. ǂ56
Čas izdaje: 2013
DOI: 10.1016/j.ndteint.2013.02.004
ID: 8636210