Naslov
On the possibility of rapid nondestructive determination of compressive strength

Autori
Kamenić, Nevenka ; Matusinović, Tomislav ; Šipušić, Juraj

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Concrete Repair, Rehabilitation and retrofitting II / Alexander, Mark G. ; Beushausen, Hans-Dieter ; Dehn, Frank ; Moyo, Pilate - London : Delhi : CRC Press, 2009, 557-561

ISBN
978-0-415-46850-3

Skup
International Conference on Concrete Repair, Rehabilitation and retrofitting II

Mjesto i datum
Cape Town, Južnoafrička Republika, 24.11.2008. - 26.11.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
calcium cluminate cement; NDT; ultrasound; compressive strength

Sažetak
In this work we were able to correlate the compressive strength of calcium aluminate cement mortar specimens to the features of the through-transmitted longitudinal ultrasonic pulse. The procedure is based on the description of the first part of through-transmitted ultrasonic pulse as a single Gaussian wave packet. A group of three parameters of Gaussian wave packet (Aω /tC), namely envelope amplitude, A [V], angular frequency, ω [rad s– 1], and wave packet center transit time, tC [μ s] are proportional to the compressive strengths measured. Based on the simple model of one-dimensional longitudinal ultrasonic wave propagation, we were able to show the physical meaning of the Aω /tC group of parameters as a maximum compressive stress of the material accompanying longitudinal ultrasonic wave propagation. We propose that these findings could be valid for other cement materials and also contribute to the development of the methods for rapid characterization of building materials.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA