Naslov
Analysis of thermal properties of cement paste during setting and hardening

Autori
Mikulić, Dunja ; Milovanović, Bojan ; Gabrijel, Ivan

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

Izvornik
Proceedings of International Symposium on Nondestructive Testing of Materials and Structures / Rilem - Istanbul : Springer, 2011, 62-62

Skup
International Symposium on Nondestructive Testing of Materials and Structures NDTMS 2011

Mjesto i datum
Istanbul, Turska, 15.05.2011. - 18.05.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Thermal conductivity; Ultrasonic pulse velocity; cement paste; non-stationary method

Sažetak
An experimental investigation is made in order to study changes of thermal properties of hardening cement paste. Using a hot disc principle for determination of thermal properties, specific heat capacity, effusivity and thermal conductivity are analyzed during first 4 days of hydration. Specific heat capacity value changed only slightly during hydration. Thermal conductivity decreased with the progress of hydration 20% compared to initial value. Hydration process was monitored using ultrasonic pulse velocity (UPV) test. A discussion of results is made taking into account porous nature of cement paste and transformation of liquid and hardened phases i.e. water and clinker minerals, into hardened structure. The motivation for conducted research is improvement of numerical models for calculating temperature changes in mass concrete structures using hydration dependant thermal properties. Also, another field of application could be the quality control of cement based materials.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA